-/* Top level of GNU C compiler
+/* Top level of GCC compilers (cc1, cc1plus, etc.)
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* This is the top level of cc1/c++.
It parses command args, opens files, invokes the various passes
#undef FLOAT /* This is for hpux. They should change hpux. */
#undef FFS /* Some systems define this in param.h. */
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include <signal.h>
-#include <setjmp.h>
#ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
# include <sys/times.h>
#endif
+#include "line-map.h"
#include "input.h"
#include "tree.h"
+#include "version.h"
#include "rtl.h"
#include "tm_p.h"
#include "flags.h"
#include "intl.h"
#include "ggc.h"
#include "graph.h"
-#include "loop.h"
#include "regs.h"
#include "timevar.h"
#include "diagnostic.h"
-#include "ssa.h"
#include "params.h"
#include "reload.h"
+#include "ira.h"
#include "dwarf2asm.h"
#include "integrate.h"
+#include "real.h"
#include "debug.h"
#include "target.h"
#include "langhooks.h"
+#include "cfglayout.h"
+#include "cfgloop.h"
+#include "hosthooks.h"
+#include "cgraph.h"
+#include "opts.h"
+#include "coverage.h"
+#include "value-prof.h"
+#include "alloc-pool.h"
+#include "tree-mudflap.h"
+#include "tree-pass.h"
+#include "gimple.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
declarations for e.g. AIX 4.x. */
#endif
-#ifdef HALF_PIC_DEBUG
-#include "halfpic.h"
-#endif
-\f
-/* Carry information from ASM_DECLARE_OBJECT_NAME
- to ASM_FINISH_DECLARE_OBJECT. */
-
-extern int size_directive_output;
-extern tree last_assemble_variable_decl;
-
-static void general_init PARAMS ((char *));
-static void parse_options_and_default_flags PARAMS ((int, char **));
-static void do_compile PARAMS ((void));
-static void process_options PARAMS ((void));
-static void lang_independent_init PARAMS ((void));
-static int lang_dependent_init PARAMS ((const char *));
-static void init_asm_output PARAMS ((const char *));
-static void finalize PARAMS ((void));
-
-static void set_target_switch PARAMS ((const char *));
-static const char *decl_name PARAMS ((tree, int));
-
-static void float_signal PARAMS ((int)) ATTRIBUTE_NORETURN;
-static void crash_signal PARAMS ((int)) ATTRIBUTE_NORETURN;
-static void set_float_handler PARAMS ((jmp_buf));
-static void compile_file PARAMS ((void));
-static void display_help PARAMS ((void));
-static void display_target_options PARAMS ((void));
-
-static void decode_d_option PARAMS ((const char *));
-static int decode_f_option PARAMS ((const char *));
-static int decode_W_option PARAMS ((const char *));
-static int decode_g_option PARAMS ((const char *));
-static unsigned int independent_decode_option PARAMS ((int, char **));
-
-static void print_version PARAMS ((FILE *, const char *));
-static int print_single_switch PARAMS ((FILE *, int, int, const char *,
- const char *, const char *,
- const char *, const char *));
-static void print_switch_values PARAMS ((FILE *, int, int, const char *,
- const char *, const char *));
+static void general_init (const char *);
+static void do_compile (void);
+static void process_options (void);
+static void backend_init (void);
+static int lang_dependent_init (const char *);
+static void init_asm_output (const char *);
+static void finalize (void);
+
+static void crash_signal (int) ATTRIBUTE_NORETURN;
+static void setup_core_dumping (void);
+static void compile_file (void);
+
+/* Nonzero to dump debug info whilst parsing (-dy option). */
+static int set_yydebug;
+
+/* True if we don't need a backend (e.g. preprocessing only). */
+static bool no_backend;
/* Length of line when printing switch values. */
#define MAX_LINE 75
const char *progname;
-/* Copy of arguments to toplev_main. */
-int save_argc;
-char **save_argv;
-\f
-/* Name of current original source file (what was input to cpp).
- This comes from each #-command in the actual input. */
-
-const char *input_filename;
+/* Copy of argument vector to toplev_main. */
+static const char **save_argv;
/* Name of top-level original source file (what was input to cpp).
This comes from the #-command at the beginning of the actual input.
const char *main_input_filename;
-/* Current line number in real source file. */
-
-int lineno;
+/* Used to enable -fvar-tracking, -fweb and -frename-registers according
+ to optimize and default_debug_hooks in process_options (). */
+#define AUTODETECT_VALUE 2
-/* Nonzero if it is unsafe to create any new pseudo registers. */
-int no_new_pseudos;
+/* Current position in real source file. */
-/* Stack of currently pending input files. */
+location_t input_location;
-struct file_stack *input_file_stack;
-
-/* Incremented on each change to input_file_stack. */
-int input_file_stack_tick;
+struct line_maps *line_table;
/* Name to use as base of names for dump output files. */
const char *dump_base_name;
-/* Format to use to print dumpfile index value */
-#ifndef DUMPFILE_FORMAT
-#define DUMPFILE_FORMAT ".%02d."
-#endif
-
-/* Bit flags that specify the machine subtype we are compiling for.
- Bits are tested using macros TARGET_... defined in the tm.h file
- and set by `-m...' switches. Must be defined in rtlanal.c. */
-
-extern int target_flags;
-
-/* Debug hooks - dependent upon command line options. */
-
-struct gcc_debug_hooks *debug_hooks = &do_nothing_debug_hooks;
-
-/* Describes a dump file. */
-
-struct dump_file_info
-{
- /* The unique extension to apply, e.g. ".jump". */
- const char *const extension;
-
- /* The -d<c> character that enables this dump file. */
- char const debug_switch;
-
- /* True if there is a corresponding graph dump file. */
- char const graph_dump_p;
+/* Name to use as a base for auxiliary output files. */
- /* True if the user selected this dump. */
- char enabled;
-
- /* True if the files have been initialized (ie truncated). */
- char initialized;
-};
+const char *aux_base_name;
-/* Enumerate the extant dump files. */
+/* Prefix for profile data files */
+const char *profile_data_prefix;
-enum dump_file_index
-{
- DFI_rtl,
- DFI_sibling,
- DFI_eh,
- DFI_jump,
- DFI_ssa,
- DFI_ssa_ccp,
- DFI_ssa_dce,
- DFI_ussa,
- DFI_cse,
- DFI_addressof,
- DFI_gcse,
- DFI_loop,
- DFI_cse2,
- DFI_cfg,
- DFI_bp,
- DFI_life,
- DFI_combine,
- DFI_ce,
- DFI_regmove,
- DFI_sched,
- DFI_lreg,
- DFI_greg,
- DFI_postreload,
- DFI_flow2,
- DFI_peephole2,
- DFI_rnreg,
- DFI_ce2,
- DFI_sched2,
- DFI_stack,
- DFI_bbro,
- DFI_mach,
- DFI_dbr,
- DFI_MAX
-};
+/* A mask of target_flags that includes bit X if X was set or cleared
+ on the command line. */
-/* Describes all the dump files. Should be kept in order of the
- pass and in sync with dump_file_index above.
+int target_flags_explicit;
- Remaining -d letters:
+/* Debug hooks - dependent upon command line options. */
- " o q u "
- " H JK OPQ TUV YZ"
-*/
+const struct gcc_debug_hooks *debug_hooks;
-static struct dump_file_info dump_file[DFI_MAX] =
-{
- { "rtl", 'r', 0, 0, 0 },
- { "sibling", 'i', 0, 0, 0 },
- { "eh", 'h', 0, 0, 0 },
- { "jump", 'j', 0, 0, 0 },
- { "ssa", 'e', 1, 0, 0 },
- { "ssaccp", 'W', 1, 0, 0 },
- { "ssadce", 'X', 1, 0, 0 },
- { "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */
- { "cse", 's', 0, 0, 0 },
- { "addressof", 'F', 0, 0, 0 },
- { "gcse", 'G', 1, 0, 0 },
- { "loop", 'L', 1, 0, 0 },
- { "cse2", 't', 1, 0, 0 },
- { "cfg", 'f', 1, 0, 0 },
- { "bp", 'b', 1, 0, 0 },
- { "life", 'f', 1, 0, 0 }, /* Yes, duplicate enable switch. */
- { "combine", 'c', 1, 0, 0 },
- { "ce", 'C', 1, 0, 0 },
- { "regmove", 'N', 1, 0, 0 },
- { "sched", 'S', 1, 0, 0 },
- { "lreg", 'l', 1, 0, 0 },
- { "greg", 'g', 1, 0, 0 },
- { "postreload", 'o', 1, 0, 0 },
- { "flow2", 'w', 1, 0, 0 },
- { "peephole2", 'z', 1, 0, 0 },
- { "rnreg", 'n', 1, 0, 0 },
- { "ce2", 'E', 1, 0, 0 },
- { "sched2", 'R', 1, 0, 0 },
- { "stack", 'k', 1, 0, 0 },
- { "bbro", 'B', 1, 0, 0 },
- { "mach", 'M', 1, 0, 0 },
- { "dbr", 'd', 0, 0, 0 },
-};
+/* Debug hooks - target default. */
-static int open_dump_file PARAMS ((enum dump_file_index, tree));
-static void close_dump_file PARAMS ((enum dump_file_index,
- void (*) (FILE *, rtx), rtx));
+static const struct gcc_debug_hooks *default_debug_hooks;
/* Other flags saying which kinds of debugging dump have been requested. */
int rtl_dump_and_exit;
int flag_print_asm_name;
-static int version_flag;
-static char *filename;
enum graph_dump_types graph_dump_format;
/* Name for output file of assembly code, specified with -o. */
-char *asm_file_name;
-
-/* Value of the -G xx switch, and whether it was passed or not. */
-int g_switch_value;
-int g_switch_set;
-
-/* Type(s) of debugging information we are producing (if any).
- See flags.h for the definitions of the different possible
- types of debugging information. */
-enum debug_info_type write_symbols = NO_DEBUG;
-
-/* Level of debugging information we are producing. See flags.h
- for the definitions of the different possible levels. */
-enum debug_info_level debug_info_level = DINFO_LEVEL_NONE;
-
-/* Nonzero means use GNU-only extensions in the generated symbolic
- debugging information. */
-/* Currently, this only has an effect when write_symbols is set to
- DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
-int use_gnu_debug_info_extensions = 0;
+const char *asm_file_name;
/* Nonzero means do optimizations. -O.
Particular numeric values stand for particular amounts of optimization;
int optimize = 0;
/* Nonzero means optimize for size. -Os.
- The only valid values are zero and non-zero. When optimize_size is
- non-zero, optimize defaults to 2, but certain individual code
+ The only valid values are zero and nonzero. When optimize_size is
+ nonzero, optimize defaults to 2, but certain individual code
bloating optimizations are disabled. */
int optimize_size = 0;
-/* Nonzero if we should exit after parsing options. */
-static int exit_after_options = 0;
-
/* The FUNCTION_DECL for the function currently being compiled,
or 0 if between functions. */
tree current_function_decl;
-/* Set to the FUNC_BEGIN label of the current function, or NULL_TREE
+/* Set to the FUNC_BEGIN label of the current function, or NULL
if none. */
-tree current_function_func_begin_label;
-
-/* Pointer to function to compute the name to use to print a declaration.
- DECL is the declaration in question.
- VERBOSITY determines what information will be printed:
- 0: DECL_NAME, demangled as necessary.
- 1: and scope information.
- 2: and any other information that might be interesting, such as function
- parameter types in C++. */
-
-const char *(*decl_printable_name) PARAMS ((tree, int));
+const char * current_function_func_begin_label;
-/* Pointer to function to compute rtl for a language-specific tree code. */
-
-typedef rtx (*lang_expand_expr_t)
- PARAMS ((union tree_node *, rtx, enum machine_mode,
- enum expand_modifier modifier));
-
-lang_expand_expr_t lang_expand_expr = 0;
-
-/* Pointer to function to finish handling an incomplete decl at the
- end of compilation. */
-
-void (*incomplete_decl_finalize_hook) PARAMS ((tree)) = 0;
-
-/* Nonzero if doing dwarf2 duplicate elimination. */
-
-int flag_eliminate_dwarf2_dups = 0;
-
-/* Nonzero if generating code to do profiling. */
-
-int profile_flag = 0;
-
-/* Nonzero if generating code to profile program flow graph arcs. */
-
-int profile_arc_flag = 0;
-
-/* Nonzero if generating info for gcov to calculate line test coverage. */
-
-int flag_test_coverage = 0;
-
-/* Nonzero indicates that branch taken probabilities should be calculated. */
-
-int flag_branch_probabilities = 0;
-
-/* Nonzero if basic blocks should be reordered. */
-
-int flag_reorder_blocks = 0;
-
-/* Nonzero if registers should be renamed. */
-
-int flag_rename_registers = 0;
-int flag_cprop_registers = 0;
-
-/* Nonzero for -pedantic switch: warn about anything
- that standard spec forbids. */
-
-int pedantic = 0;
-
-/* Temporarily suppress certain warnings.
- This is set while reading code from a system header file. */
-
-int in_system_header = 0;
-
-/* Don't print functions as they are compiled. -quiet. */
-
-int quiet_flag = 0;
-
-/* Print times taken by the various passes. -ftime-report. */
-
-int time_report = 0;
-
-/* Print memory still in use at end of compilation (which may have little
- to do with peak memory consumption). -fmem-report. */
-
-int mem_report = 0;
-
-/* Non-zero means to collect statistics which might be expensive
+/* Nonzero means to collect statistics which might be expensive
and to print them when we are done. */
int flag_detailed_statistics = 0;
-\f
+/* A random sequence of characters, unless overridden by user. */
+static const char *flag_random_seed;
+
+/* A local time stamp derived from the time of compilation. It will be
+ zero if the system cannot provide a time. It will be -1u, if the
+ user has specified a particular random seed. */
+unsigned local_tick;
+
/* -f flags. */
/* Nonzero means `char' should be signed. */
int flag_signed_char;
-/* Nonzero means give an enum type only as many bytes as it needs. */
+/* Nonzero means give an enum type only as many bytes as it needs. A value
+ of 2 means it has not yet been initialized. */
int flag_short_enums;
-/* Nonzero for -fcaller-saves: allocate values in regs that need to
- be saved across function calls, if that produces overall better code.
- Optional now, so people can test it. */
-
-#ifdef DEFAULT_CALLER_SAVES
-int flag_caller_saves = 1;
-#else
-int flag_caller_saves = 0;
-#endif
-
/* Nonzero if structures and unions should be returned in memory.
This should only be defined if compatibility with another compiler or
int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN;
-/* Nonzero for -fforce-mem: load memory value into a register
- before arithmetic on it. This makes better cse but slower compilation. */
-
-int flag_force_mem = 0;
-
-/* Nonzero for -fforce-addr: load memory address into a register before
- reference to memory. This makes better cse but slower compilation. */
-
-int flag_force_addr = 0;
-
-/* Nonzero for -fdefer-pop: don't pop args after each function call;
- instead save them up to pop many calls' args with one insns. */
-
-int flag_defer_pop = 0;
-
-/* Nonzero for -ffloat-store: don't allocate floats and doubles
- in extended-precision registers. */
-
-int flag_float_store = 0;
-
-/* Nonzero for -fcse-follow-jumps:
- have cse follow jumps to do a more extensive job. */
-
-int flag_cse_follow_jumps;
-
-/* Nonzero for -fcse-skip-blocks:
- have cse follow a branch around a block. */
-int flag_cse_skip_blocks;
-
-/* Nonzero for -fexpensive-optimizations:
- perform miscellaneous relatively-expensive optimizations. */
-int flag_expensive_optimizations;
-
-/* Nonzero for -fthread-jumps:
- have jump optimize output of loop. */
-
-int flag_thread_jumps;
-
-/* Nonzero enables strength-reduction in loop.c. */
-
-int flag_strength_reduce = 0;
-
-/* Nonzero enables loop unrolling in unroll.c. Only loops for which the
- number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
- UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
- unrolled. */
-
-int flag_unroll_loops;
-
-/* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
- This is generally not a win. */
-
-int flag_unroll_all_loops;
-
-/* Nonzero enables prefetch optimizations for arrays in loops. */
-
-int flag_prefetch_loop_arrays;
-
-/* Nonzero forces all invariant computations in loops to be moved
- outside the loop. */
-
-int flag_move_all_movables = 0;
-
-/* Nonzero forces all general induction variables in loops to be
- strength reduced. */
-
-int flag_reduce_all_givs = 0;
-
-/* Nonzero to perform full register move optimization passes. This is the
- default for -O2. */
-
-int flag_regmove = 0;
-
-/* Nonzero for -fwritable-strings:
- store string constants in data segment and don't uniquize them. */
-
-int flag_writable_strings = 0;
-
-/* Nonzero means don't put addresses of constant functions in registers.
- Used for compiling the Unix kernel, where strange substitutions are
- done on the assembly output. */
-
-int flag_no_function_cse = 0;
-
-/* Nonzero for -fomit-frame-pointer:
- don't make a frame pointer in simple functions that don't require one. */
-
-int flag_omit_frame_pointer = 0;
-
-/* Nonzero means place each function into its own section on those platforms
- which support arbitrary section names and unlimited numbers of sections. */
-
-int flag_function_sections = 0;
-
-/* ... and similar for data. */
-
-int flag_data_sections = 0;
-
-/* Nonzero to inhibit use of define_optimization peephole opts. */
-
-int flag_no_peephole = 0;
-
-/* Nonzero allows GCC to optimize sibling and tail recursive calls. */
-
-int flag_optimize_sibling_calls = 0;
-
-/* Nonzero means the front end generally wants `errno' maintained by math
- operations, like built-in SQRT. */
-
-int flag_errno_math = 1;
-
-/* Nonzero means that unsafe floating-point math optimizations are allowed
- for the sake of speed. IEEE compliance is not guaranteed, and operations
- are allowed to assume that their arguments and results are "normal"
- (e.g., nonnegative for SQRT). */
-
-int flag_unsafe_math_optimizations = 0;
-
-/* Zero means that floating-point math operations cannot generate a
- (user-visible) trap. This is the case, for example, in nonstop
- IEEE 754 arithmetic. */
-
-int flag_trapping_math = 1;
-
/* 0 means straightforward implementation of complex divide acceptable.
1 means wide ranges of inputs must work for complex divide.
- 2 means C99-like requirements for complex divide (not yet implemented). */
-
-int flag_complex_divide_method = 0;
-
-/* Nonzero means all references through pointers are volatile. */
-
-int flag_volatile;
-
-/* Nonzero means treat all global and extern variables as volatile. */
-
-int flag_volatile_global;
-
-/* Nonzero means treat all static variables as volatile. */
-
-int flag_volatile_static;
-
-/* Nonzero means just do syntax checking; don't output anything. */
-
-int flag_syntax_only = 0;
-
-/* Nonzero means perform global cse. */
-
-static int flag_gcse;
-
-/* Nonzero means to use global dataflow analysis to eliminate
- useless null pointer tests. */
-
-static int flag_delete_null_pointer_checks;
+ 2 means C99-like requirements for complex multiply and divide. */
-/* Nonzero means to do the enhanced load motion during gcse, which trys
- to hoist loads by not killing them when a store to the same location
- is seen. */
-
-int flag_gcse_lm = 1;
-
-/* Nonzero means to perform store motion after gcse, which will try to
- move stores closer to the exit block. Its not very effective without
- flag_gcse_lm. */
-
-int flag_gcse_sm = 1;
-
-/* Nonzero means to rerun cse after loop optimization. This increases
- compilation time about 20% and picks up a few more common expressions. */
-
-static int flag_rerun_cse_after_loop;
-
-/* Nonzero means to run loop optimizations twice. */
-
-int flag_rerun_loop_opt;
-
-/* Nonzero for -finline-functions: ok to inline functions that look like
- good inline candidates. */
-
-int flag_inline_functions;
-
-/* Nonzero for -fkeep-inline-functions: even if we make a function
- go inline everywhere, keep its definition around for debugging
- purposes. */
-
-int flag_keep_inline_functions;
-
-/* Nonzero means that functions will not be inlined. */
-
-int flag_no_inline = 2;
-
-/* Nonzero means that we don't want inlining by virtue of -fno-inline,
- not just because the tree inliner turned us off. */
-
-int flag_really_no_inline = 2;
-
-/* Nonzero means that we should emit static const variables
- regardless of whether or not optimization is turned on. */
-
-int flag_keep_static_consts = 1;
+int flag_complex_method = 1;
/* Nonzero means we should be saving declaration info into a .X file. */
/* Specified name of aux-info file. */
-static char *aux_info_file_name;
-
-/* Nonzero means make the text shared if supported. */
-
-int flag_shared_data;
-
-/* Nonzero means schedule into delayed branch slots if supported. */
+const char *aux_info_file_name;
-int flag_delayed_branch;
+/* Nonzero if we are compiling code for a shared library, zero for
+ executable. */
-/* Nonzero if we are compiling pure (sharable) code.
- Value is 1 if we are doing reasonable (i.e. simple
- offset into offset table) pic. Value is 2 if we can
- only perform register offsets. */
+int flag_shlib;
-int flag_pic;
+/* Generate code for GNU or NeXT Objective-C runtime environment. */
-/* Nonzero means generate extra code for exception handling and enable
- exception handling. */
-
-int flag_exceptions;
-
-/* Nonzero means generate frame unwind info table when supported. */
-
-int flag_unwind_tables = 0;
+#ifdef NEXT_OBJC_RUNTIME
+int flag_next_runtime = 1;
+#else
+int flag_next_runtime = 0;
+#endif
-/* Nonzero means generate frame unwind info table exact at each insn boundary */
+/* Set to the default thread-local storage (tls) model to use. */
-int flag_asynchronous_unwind_tables = 0;
+enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
-/* Nonzero means don't place uninitialized global data in common storage
- by default. */
+/* Set the default region and algorithm for the integrated register
+ allocator. */
-int flag_no_common;
+enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB;
+enum ira_region flag_ira_region = IRA_REGION_MIXED;
-/* Nonzero means pretend it is OK to examine bits of target floats,
- even if that isn't true. The resulting code will have incorrect constants,
- but the same series of instructions that the native compiler would make. */
+/* Set the default value for -fira-verbose. */
-int flag_pretend_float;
+unsigned int flag_ira_verbose = 5;
/* Nonzero means change certain warnings into errors.
Usually these are warnings about failure to conform to some standard. */
int flag_pedantic_errors = 0;
-/* flag_schedule_insns means schedule insns within basic blocks (before
- local_alloc).
- flag_schedule_insns_after_reload means schedule insns after
- global_alloc. */
-
-int flag_schedule_insns = 0;
-int flag_schedule_insns_after_reload = 0;
-
-/* The following flags have effect only for scheduling before register
- allocation:
-
- flag_schedule_interblock means schedule insns accross basic blocks.
- flag_schedule_speculative means allow speculative motion of non-load insns.
- flag_schedule_speculative_load means allow speculative motion of some
- load insns.
- flag_schedule_speculative_load_dangerous allows speculative motion of more
- load insns. */
-
-int flag_schedule_interblock = 1;
-int flag_schedule_speculative = 1;
-int flag_schedule_speculative_load = 0;
-int flag_schedule_speculative_load_dangerous = 0;
-
-int flag_single_precision_constant;
-
-/* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple
- by a cheaper branch on a count register. */
-int flag_branch_on_count_reg = 1;
-
-/* -finhibit-size-directive inhibits output of .size for ELF.
- This is used only for compiling crtstuff.c,
- and it may be extended to other effects
- needed for crtstuff.c on other systems. */
-int flag_inhibit_size_directive = 0;
+/* Nonzero means make permerror produce warnings instead of errors. */
-/* -fverbose-asm causes extra commentary information to be produced in
- the generated assembly code (to make it more readable). This option
- is generally only of use to those who actually need to read the
- generated assembly code (perhaps while debugging the compiler itself).
- -fno-verbose-asm, the default, causes the extra information
- to be omitted and is useful when comparing two assembler files. */
-
-int flag_verbose_asm = 0;
+int flag_permissive = 0;
/* -dA causes debug commentary information to be produced in
the generated assembly code (to make it more readable). This option
int flag_dump_rtl_in_asm = 0;
-/* -fgnu-linker specifies use of the GNU linker for initializations.
- (Or, more generally, a linker that handles initializations.)
- -fno-gnu-linker says that collect2 will be used. */
-#ifdef USE_COLLECT2
-int flag_gnu_linker = 0;
-#else
-int flag_gnu_linker = 1;
-#endif
-
-/* Enable SSA. */
-int flag_ssa = 0;
-
-/* Enable ssa conditional constant propagation. */
-int flag_ssa_ccp = 0;
-
-/* Enable ssa aggressive dead code elimination. */
-int flag_ssa_dce = 0;
-
-/* Tag all structures with __attribute__(packed). */
-int flag_pack_struct = 0;
-
-/* Emit code to check for stack overflow; also may cause large objects
- to be allocated dynamically. */
-int flag_stack_check;
-
/* When non-NULL, indicates that whenever space is allocated on the
stack, the resulting stack pointer must not pass this
address---that is, for stacks that grow downward, the stack pointer
the support provided depends on the backend. */
rtx stack_limit_rtx;
-/* 0 if pointer arguments may alias each other. True in C.
- 1 if pointer arguments may not alias each other but may alias
- global variables.
- 2 if pointer arguments may not alias each other and may not
- alias global variables. True in Fortran.
- This defaults to 0 for C. */
-int flag_argument_noalias = 0;
-
-/* Nonzero if we should do (language-dependent) alias analysis.
- Typically, this analysis will assume that expressions of certain
- types do not alias expressions of certain other types. Only used
- if alias analysis (in general) is enabled. */
-int flag_strict_aliasing = 0;
-
-/* Instrument functions with calls at entry and exit, for profiling. */
-int flag_instrument_function_entry_exit = 0;
-
-/* Nonzero means ignore `#ident' directives. 0 means handle them.
- On SVR4 targets, it also controls whether or not to emit a
- string identifying the compiler. */
-
-int flag_no_ident = 0;
-
-/* This will perform a peephole pass before sched2. */
-int flag_peephole2 = 0;
-
-/* This will try to guess branch probabilities. */
-int flag_guess_branch_prob = 0;
-
-/* -fbounded-pointers causes gcc to compile pointers as composite
- objects occupying three words: the pointer value, the base address
- of the referent object, and the address immediately beyond the end
- of the referent object. The base and extent allow us to perform
- runtime bounds checking. -fbounded-pointers implies -fcheck-bounds. */
-int flag_bounded_pointers = 0;
-
-/* -fcheck-bounds causes gcc to generate array bounds checks.
- For C, C++: defaults to value of flag_bounded_pointers.
- For ObjC: defaults to off.
- For Java: defaults to on.
- For Fortran: defaults to off.
- For CHILL: defaults to off. */
-int flag_bounds_check = 0;
-
-/* This will attempt to merge constant section constants, if 1 only
- string constants and constants from constant pool, if 2 also constant
- variables. */
-int flag_merge_constants = 1;
-
-/* If one, renumber instruction UIDs to reduce the number of
- unused UIDs if there are a lot of instructions. If greater than
- one, unconditionally renumber instruction UIDs. */
-int flag_renumber_insns = 1;
+/* Nonzero if we should track variables. When
+ flag_var_tracking == AUTODETECT_VALUE it will be set according
+ to optimize, debug_info_level and debug_hooks in process_options (). */
+int flag_var_tracking = AUTODETECT_VALUE;
+
+/* Type of stack check. */
+enum stack_check_type flag_stack_check = NO_STACK_CHECK;
+
+/* True if the user has tagged the function with the 'section'
+ attribute. */
+
+bool user_defined_section_attribute = false;
/* Values of the -falign-* flags: how much to align labels in code.
0 means `use default', 1 means `don't align'.
For each variable, there is an _log variant which is the power
of two not less than the variable, for .align output. */
-int align_loops;
int align_loops_log;
int align_loops_max_skip;
-int align_jumps;
int align_jumps_log;
int align_jumps_max_skip;
-int align_labels;
int align_labels_log;
int align_labels_max_skip;
-int align_functions;
int align_functions_log;
-/* Like align_functions_log above, but used by front-ends to force the
- minimum function alignment. Zero means no alignment is forced. */
-int force_align_functions_log;
-
-/* Table of supported debugging formats. */
-static const struct
-{
- const char *const arg;
- /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a
- constant expression, we use NO_DEBUG in its place. */
- const enum debug_info_type debug_type;
- const int use_extensions_p;
- const char *const description;
-} *da,
-debug_args[] =
-{
- { "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS,
- N_("Generate debugging info in default format") },
- { "gdb", NO_DEBUG, 1, N_("Generate debugging info in default extended format") },
-#ifdef DBX_DEBUGGING_INFO
- { "stabs", DBX_DEBUG, 0, N_("Generate STABS format debug info") },
- { "stabs+", DBX_DEBUG, 1, N_("Generate extended STABS format debug info") },
-#endif
-#ifdef DWARF_DEBUGGING_INFO
- { "dwarf", DWARF_DEBUG, 0, N_("Generate DWARF-1 format debug info") },
- { "dwarf+", DWARF_DEBUG, 1,
- N_("Generate extended DWARF-1 format debug info") },
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
- { "dwarf-2", DWARF2_DEBUG, 0, N_("Generate DWARF-2 debug info") },
-#endif
-#ifdef XCOFF_DEBUGGING_INFO
- { "xcoff", XCOFF_DEBUG, 0, N_("Generate XCOFF format debug info") },
- { "xcoff+", XCOFF_DEBUG, 1, N_("Generate extended XCOFF format debug info") },
-#endif
-#ifdef SDB_DEBUGGING_INFO
- { "coff", SDB_DEBUG, 0, N_("Generate COFF format debug info") },
-#endif
-#ifdef VMS_DEBUGGING_INFO
- { "vms", VMS_DEBUG, 0, N_("Generate VMS format debug info") },
-#endif
- { 0, 0, 0, 0 }
-};
-
typedef struct
{
const char *const string;
int *const variable;
const int on_value;
- const char *const description;
}
lang_independent_options;
-int flag_trapv = 0;
-
-/* Add or remove a leading underscore from user symbols. */
-int flag_leading_underscore = -1;
+/* Nonzero if subexpressions must be evaluated from left-to-right. */
+int flag_evaluation_order = 0;
/* The user symbol prefix after having resolved same. */
const char *user_label_prefix;
static const param_info lang_independent_params[] = {
-#define DEFPARAM(ENUM, OPTION, HELP, DEFAULT) \
- { OPTION, DEFAULT, HELP },
+#define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \
+ { OPTION, DEFAULT, false, MIN, MAX, HELP },
#include "params.def"
#undef DEFPARAM
- { NULL, 0, NULL }
+ { NULL, 0, false, 0, 0, NULL }
};
-/* A default for same. */
-#ifndef USER_LABEL_PREFIX
-#define USER_LABEL_PREFIX ""
-#endif
+/* Output files for assembler code (real compiler output)
+ and debugging dumps. */
-/* Table of language-independent -f options.
- STRING is the option name. VARIABLE is the address of the variable.
- ON_VALUE is the value to store in VARIABLE
- if `-fSTRING' is seen as an option.
- (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
+FILE *asm_out_file;
+FILE *aux_info_file;
+FILE *dump_file = NULL;
+const char *dump_file_name;
-static const lang_independent_options f_options[] =
-{
- {"eliminate-dwarf2-dups", &flag_eliminate_dwarf2_dups, 1,
- N_("Perform DWARF2 duplicate elimination") },
- {"float-store", &flag_float_store, 1,
- N_("Do not store floats in registers") },
- {"volatile", &flag_volatile, 1,
- N_("Consider all mem refs through pointers as volatile") },
- {"volatile-global", &flag_volatile_global, 1,
- N_("Consider all mem refs to global data to be volatile") },
- {"volatile-static", &flag_volatile_static, 1,
- N_("Consider all mem refs to static data to be volatile") },
- {"defer-pop", &flag_defer_pop, 1,
- N_("Defer popping functions args from stack until later") },
- {"omit-frame-pointer", &flag_omit_frame_pointer, 1,
- N_("When possible do not generate stack frames") },
- {"optimize-sibling-calls", &flag_optimize_sibling_calls, 1,
- N_("Optimize sibling and tail recursive calls") },
- {"cse-follow-jumps", &flag_cse_follow_jumps, 1,
- N_("When running CSE, follow jumps to their targets") },
- {"cse-skip-blocks", &flag_cse_skip_blocks, 1,
- N_("When running CSE, follow conditional jumps") },
- {"expensive-optimizations", &flag_expensive_optimizations, 1,
- N_("Perform a number of minor, expensive optimizations") },
- {"thread-jumps", &flag_thread_jumps, 1,
- N_("Perform jump threading optimizations") },
- {"strength-reduce", &flag_strength_reduce, 1,
- N_("Perform strength reduction optimizations") },
- {"unroll-loops", &flag_unroll_loops, 1,
- N_("Perform loop unrolling when iteration count is known") },
- {"unroll-all-loops", &flag_unroll_all_loops, 1,
- N_("Perform loop unrolling for all loops") },
- {"prefetch-loop-arrays", &flag_prefetch_loop_arrays, 1,
- N_("Generate prefetch instructions, if available, for arrays in loops") },
- {"move-all-movables", &flag_move_all_movables, 1,
- N_("Force all loop invariant computations out of loops") },
- {"reduce-all-givs", &flag_reduce_all_givs, 1,
- N_("Strength reduce all loop general induction variables") },
- {"writable-strings", &flag_writable_strings, 1,
- N_("Store strings in writable data section") },
- {"peephole", &flag_no_peephole, 0,
- N_("Enable machine specific peephole optimizations") },
- {"force-mem", &flag_force_mem, 1,
- N_("Copy memory operands into registers before using") },
- {"force-addr", &flag_force_addr, 1,
- N_("Copy memory address constants into regs before using") },
- {"function-cse", &flag_no_function_cse, 0,
- N_("Allow function addresses to be held in registers") },
- {"inline-functions", &flag_inline_functions, 1,
- N_("Integrate simple functions into their callers") },
- {"keep-inline-functions", &flag_keep_inline_functions, 1,
- N_("Generate code for funcs even if they are fully inlined") },
- {"inline", &flag_no_inline, 0,
- N_("Pay attention to the 'inline' keyword") },
- {"keep-static-consts", &flag_keep_static_consts, 1,
- N_("Emit static const variables even if they are not used") },
- {"syntax-only", &flag_syntax_only, 1,
- N_("Check for syntax errors, then stop") },
- {"shared-data", &flag_shared_data, 1,
- N_("Mark data as shared rather than private") },
- {"caller-saves", &flag_caller_saves, 1,
- N_("Enable saving registers around function calls") },
- {"pcc-struct-return", &flag_pcc_struct_return, 1,
- N_("Return 'short' aggregates in memory, not registers") },
- {"reg-struct-return", &flag_pcc_struct_return, 0,
- N_("Return 'short' aggregates in registers") },
- {"delayed-branch", &flag_delayed_branch, 1,
- N_("Attempt to fill delay slots of branch instructions") },
- {"gcse", &flag_gcse, 1,
- N_("Perform the global common subexpression elimination") },
- {"gcse-lm", &flag_gcse_lm, 1,
- N_("Perform enhanced load motion during global subexpression elimination") },
- {"gcse-sm", &flag_gcse_sm, 1,
- N_("Perform store motion after global subexpression elimination") },
- {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1,
- N_("Run CSE pass after loop optimizations") },
- {"rerun-loop-opt", &flag_rerun_loop_opt, 1,
- N_("Run the loop optimizer twice") },
- {"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1,
- N_("Delete useless null pointer checks") },
- {"pretend-float", &flag_pretend_float, 1,
- N_("Pretend that host and target use the same FP format") },
- {"schedule-insns", &flag_schedule_insns, 1,
- N_("Reschedule instructions before register allocation") },
- {"schedule-insns2", &flag_schedule_insns_after_reload, 1,
- N_("Reschedule instructions after register allocation") },
- {"sched-interblock",&flag_schedule_interblock, 1,
- N_("Enable scheduling across basic blocks") },
- {"sched-spec",&flag_schedule_speculative, 1,
- N_("Allow speculative motion of non-loads") },
- {"sched-spec-load",&flag_schedule_speculative_load, 1,
- N_("Allow speculative motion of some loads") },
- {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1,
- N_("Allow speculative motion of more loads") },
- {"branch-count-reg",&flag_branch_on_count_reg, 1,
- N_("Replace add,compare,branch with branch on count reg") },
- {"pic", &flag_pic, 1,
- N_("Generate position independent code, if possible") },
- {"PIC", &flag_pic, 2, ""},
- {"exceptions", &flag_exceptions, 1,
- N_("Enable exception handling") },
- {"unwind-tables", &flag_unwind_tables, 1,
- N_("Just generate unwind tables for exception handling") },
- {"asynchronous-unwind-tables", &flag_asynchronous_unwind_tables, 1,
- N_("Generate unwind tables exact at each instruction boundary") },
- {"non-call-exceptions", &flag_non_call_exceptions, 1,
- N_("Support synchronous non-call exceptions") },
- {"profile-arcs", &profile_arc_flag, 1,
- N_("Insert arc based program profiling code") },
- {"test-coverage", &flag_test_coverage, 1,
- N_("Create data files needed by gcov") },
- {"branch-probabilities", &flag_branch_probabilities, 1,
- N_("Use profiling information for branch probabilities") },
- {"reorder-blocks", &flag_reorder_blocks, 1,
- N_("Reorder basic blocks to improve code placement") },
- {"rename-registers", &flag_rename_registers, 1,
- N_("Do the register renaming optimization pass") },
- {"cprop-registers", &flag_cprop_registers, 1,
- N_("Do the register copy-propagation optimization pass") },
- {"common", &flag_no_common, 0,
- N_("Do not put uninitialized globals in the common section") },
- {"inhibit-size-directive", &flag_inhibit_size_directive, 1,
- N_("Do not generate .size directives") },
- {"function-sections", &flag_function_sections, 1,
- N_("place each function into its own section") },
- {"data-sections", &flag_data_sections, 1,
- N_("place data items into their own section") },
- {"verbose-asm", &flag_verbose_asm, 1,
- N_("Add extra commentry to assembler output") },
- {"gnu-linker", &flag_gnu_linker, 1,
- N_("Output GNU ld formatted global initializers") },
- {"regmove", &flag_regmove, 1,
- N_("Enables a register move optimization") },
- {"optimize-register-move", &flag_regmove, 1,
- N_("Do the full regmove optimization pass") },
- {"pack-struct", &flag_pack_struct, 1,
- N_("Pack structure members together without holes") },
- {"stack-check", &flag_stack_check, 1,
- N_("Insert stack checking code into the program") },
- {"argument-alias", &flag_argument_noalias, 0,
- N_("Specify that arguments may alias each other & globals") },
- {"argument-noalias", &flag_argument_noalias, 1,
- N_("Assume arguments may alias globals but not each other") },
- {"argument-noalias-global", &flag_argument_noalias, 2,
- N_("Assume arguments do not alias each other or globals") },
- {"strict-aliasing", &flag_strict_aliasing, 1,
- N_("Assume strict aliasing rules apply") },
- {"align-loops", &align_loops, 0,
- N_("Align the start of loops") },
- {"align-jumps", &align_jumps, 0,
- N_("Align labels which are only reached by jumping") },
- {"align-labels", &align_labels, 0,
- N_("Align all labels") },
- {"align-functions", &align_functions, 0,
- N_("Align the start of functions") },
- {"merge-constants", &flag_merge_constants, 1,
- N_("Attempt to merge identical constants accross compilation units") },
- {"merge-all-constants", &flag_merge_constants, 2,
- N_("Attempt to merge identical constants and constant variables") },
- {"dump-unnumbered", &flag_dump_unnumbered, 1,
- N_("Suppress output of instruction numbers and line number notes in debugging dumps") },
- {"instrument-functions", &flag_instrument_function_entry_exit, 1,
- N_("Instrument function entry/exit with profiling calls") },
- {"ssa", &flag_ssa, 1,
- N_("Enable SSA optimizations") },
- {"ssa-ccp", &flag_ssa_ccp, 1,
- N_("Enable SSA conditional constant propagation") },
- {"ssa-dce", &flag_ssa_dce, 1,
- N_("Enable aggressive SSA dead code elimination") },
- {"leading-underscore", &flag_leading_underscore, 1,
- N_("External symbols have a leading underscore") },
- {"ident", &flag_no_ident, 0,
- N_("Process #ident directives") },
- { "peephole2", &flag_peephole2, 1,
- N_("Enables an rtl peephole pass run before sched2") },
- { "guess-branch-probability", &flag_guess_branch_prob, 1,
- N_("Enables guessing of branch probabilities") },
- {"math-errno", &flag_errno_math, 1,
- N_("Set errno after built-in math functions") },
- {"trapping-math", &flag_trapping_math, 1,
- N_("Floating-point operations can trap") },
- {"unsafe-math-optimizations", &flag_unsafe_math_optimizations, 1,
- N_("Allow math optimizations that may violate IEEE or ANSI standards") },
- {"bounded-pointers", &flag_bounded_pointers, 1,
- N_("Compile pointers as triples: value, base & end") },
- {"bounds-check", &flag_bounds_check, 1,
- N_("Generate code to check bounds before dereferencing pointers and arrays") },
- {"single-precision-constant", &flag_single_precision_constant, 1,
- N_("Convert floating point constant to single precision constant") },
- {"time-report", &time_report, 1,
- N_("Report time taken by each compiler pass at end of run") },
- {"mem-report", &mem_report, 1,
- N_("Report on permanent memory allocation at end of run") },
- { "trapv", &flag_trapv, 1,
- N_("Trap for signed overflow in addition / subtraction / multiplication") },
-};
+/* The current working directory of a translation. It's generally the
+ directory from which compilation was initiated, but a preprocessed
+ file may specify the original directory in which it was
+ created. */
-/* Table of language-specific options. */
+static const char *src_pwd;
-static const struct lang_opt
-{
- const char *const option;
- const char *const description;
-}
-documented_lang_options[] =
+/* Initialize src_pwd with the given string, and return true. If it
+ was already initialized, return false. As a special case, it may
+ be called with a NULL argument to test whether src_pwd has NOT been
+ initialized yet. */
+
+bool
+set_src_pwd (const char *pwd)
{
- /* In order not to overload the --help output, the convention
- used here is to only describe those options which are not
- enabled by default. */
-
- { "-ansi",
- N_("Compile just for ISO C89") },
- { "-fallow-single-precision",
- N_("Do not promote floats to double if using -traditional") },
- { "-std= ",
- N_("Determine language standard") },
-
- { "-fsigned-bitfields", "" },
- { "-funsigned-bitfields",
- N_("Make bit-fields by unsigned by default") },
- { "-fno-signed-bitfields", "" },
- { "-fno-unsigned-bitfields","" },
- { "-fsigned-char",
- N_("Make 'char' be signed by default") },
- { "-funsigned-char",
- N_("Make 'char' be unsigned by default") },
- { "-fno-signed-char", "" },
- { "-fno-unsigned-char", "" },
-
- { "-ftraditional", "" },
- { "-traditional",
- N_("Attempt to support traditional K&R style C") },
- { "-fnotraditional", "" },
- { "-fno-traditional", "" },
-
- { "-fasm", "" },
- { "-fno-asm",
- N_("Do not recognize the 'asm' keyword") },
- { "-fbuiltin", "" },
- { "-fno-builtin",
- N_("Do not recognize any built in functions") },
- { "-fhosted",
- N_("Assume normal C execution environment") },
- { "-fno-hosted", "" },
- { "-ffreestanding",
- N_("Assume that standard libraries & main might not exist") },
- { "-fno-freestanding", "" },
- { "-fcond-mismatch",
- N_("Allow different types as args of ? operator") },
- { "-fno-cond-mismatch", "" },
- { "-fdollars-in-identifiers",
- N_("Allow the use of $ inside identifiers") },
- { "-fno-dollars-in-identifiers", "" },
- { "-fpreprocessed", "" },
- { "-fno-preprocessed", "" },
- { "-fshort-double",
- N_("Use the same size for double as for float") },
- { "-fno-short-double", "" },
- { "-fshort-enums",
- N_("Use the smallest fitting integer to hold enums") },
- { "-fno-short-enums", "" },
- { "-fshort-wchar",
- N_("Override the underlying type for wchar_t to `unsigned short'") },
- { "-fno-short-wchar", "" },
-
- { "-Wall",
- N_("Enable most warning messages") },
- { "-Wbad-function-cast",
- N_("Warn about casting functions to incompatible types") },
- { "-Wno-bad-function-cast", "" },
- { "-Wno-missing-noreturn", "" },
- { "-Wmissing-format-attribute",
- N_("Warn about functions which might be candidates for format attributes") },
- { "-Wno-missing-format-attribute", "" },
- { "-Wcast-qual",
- N_("Warn about casts which discard qualifiers") },
- { "-Wno-cast-qual", "" },
- { "-Wchar-subscripts",
- N_("Warn about subscripts whose type is 'char'") },
- { "-Wno-char-subscripts", "" },
- { "-Wcomment",
- N_("Warn if nested comments are detected") },
- { "-Wno-comment", "" },
- { "-Wcomments",
- N_("Warn if nested comments are detected") },
- { "-Wno-comments", "" },
- { "-Wconversion",
- N_("Warn about possibly confusing type conversions") },
- { "-Wno-conversion", "" },
- { "-Wformat",
- N_("Warn about printf/scanf/strftime/strfmon format anomalies") },
- { "-Wno-format", "" },
- { "-Wformat-y2k", "" },
- { "-Wno-format-y2k",
- N_("Don't warn about strftime formats yielding 2 digit years") },
- { "-Wformat-extra-args", "" },
- { "-Wno-format-extra-args",
- N_("Don't warn about too many arguments to format functions") },
- { "-Wformat-nonliteral",
- N_("Warn about non-string-literal format strings") },
- { "-Wno-format-nonliteral", "" },
- { "-Wformat-security",
- N_("Warn about possible security problems with format functions") },
- { "-Wno-format-security", "" },
- { "-Wimplicit-function-declaration",
- N_("Warn about implicit function declarations") },
- { "-Wno-implicit-function-declaration", "" },
- { "-Werror-implicit-function-declaration", "" },
- { "-Wimplicit-int",
- N_("Warn when a declaration does not specify a type") },
- { "-Wno-implicit-int", "" },
- { "-Wimplicit", "" },
- { "-Wno-implicit", "" },
- { "-Wimport",
- N_("Warn about the use of the #import directive") },
- { "-Wno-import", "" },
- { "-Wlong-long","" },
- { "-Wno-long-long",
- N_("Do not warn about using 'long long' when -pedantic") },
- { "-Wmain",
- N_("Warn about suspicious declarations of main") },
- { "-Wno-main", "" },
- { "-Wmissing-braces",
- N_("Warn about possibly missing braces around initializers") },
- { "-Wno-missing-braces", "" },
- { "-Wmissing-declarations",
- N_("Warn about global funcs without previous declarations") },
- { "-Wno-missing-declarations", "" },
- { "-Wmissing-prototypes",
- N_("Warn about global funcs without prototypes") },
- { "-Wno-missing-prototypes", "" },
- { "-Wmultichar",
- N_("Warn about use of multicharacter literals") },
- { "-Wno-multichar", "" },
- { "-Wnested-externs",
- N_("Warn about externs not at file scope level") },
- { "-Wno-nested-externs", "" },
- { "-Wparentheses",
- N_("Warn about possible missing parentheses") },
- { "-Wno-parentheses", "" },
- { "-Wsequence-point",
- N_("Warn about possible violations of sequence point rules") },
- { "-Wno-sequence-point", "" },
- { "-Wpointer-arith",
- N_("Warn about function pointer arithmetic") },
- { "-Wno-pointer-arith", "" },
- { "-Wredundant-decls",
- N_("Warn about multiple declarations of the same object") },
- { "-Wno-redundant-decls", "" },
- { "-Wsign-compare",
- N_("Warn about signed/unsigned comparisons") },
- { "-Wno-sign-compare", "" },
- { "-Wfloat-equal",
- N_("Warn about testing equality of floating point numbers") },
- { "-Wno-float-equal", "" },
- { "-Wunknown-pragmas",
- N_("Warn about unrecognized pragmas") },
- { "-Wno-unknown-pragmas", "" },
- { "-Wstrict-prototypes",
- N_("Warn about non-prototyped function decls") },
- { "-Wno-strict-prototypes", "" },
- { "-Wtraditional",
- N_("Warn about constructs whose meaning change in ISO C") },
- { "-Wno-traditional", "" },
- { "-Wtrigraphs",
- N_("Warn when trigraphs are encountered") },
- { "-Wno-trigraphs", "" },
- { "-Wundef", "" },
- { "-Wno-undef", "" },
- { "-Wwrite-strings",
- N_("Mark strings as 'const char *'") },
- { "-Wno-write-strings", "" },
-
-#define DEFINE_LANG_NAME(NAME) { NULL, NAME },
-
-#include "options.h"
+ if (src_pwd)
+ {
+ if (strcmp (src_pwd, pwd) == 0)
+ return true;
+ else
+ return false;
+ }
-};
+ src_pwd = xstrdup (pwd);
+ return true;
+}
-/* Here is a table, controlled by the tm.h file, listing each -m switch
- and which bits in `target_switches' it should set or clear.
- If VALUE is positive, it is bits to set.
- If VALUE is negative, -VALUE is bits to clear.
- (The sign bit is not used so there is no confusion.) */
+/* Return the directory from which the translation unit was initiated,
+ in case set_src_pwd() was not called before to assign it a
+ different value. */
-static const struct
+const char *
+get_src_pwd (void)
{
- const char *const name;
- const int value;
- const char *const description;
-}
-target_switches [] = TARGET_SWITCHES;
+ if (! src_pwd)
+ {
+ src_pwd = getpwd ();
+ if (!src_pwd)
+ src_pwd = ".";
+ }
-/* This table is similar, but allows the switch to have a value. */
+ return src_pwd;
+}
-#ifdef TARGET_OPTIONS
-static const struct
+/* Called when the start of a function definition is parsed,
+ this function prints on stderr the name of the function. */
+void
+announce_function (tree decl)
{
- const char *const prefix;
- const char **const variable;
- const char *const description;
+ if (!quiet_flag)
+ {
+ if (rtl_dump_and_exit)
+ fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
+ else
+ fprintf (stderr, " %s", lang_hooks.decl_printable_name (decl, 2));
+ fflush (stderr);
+ pp_needs_newline (global_dc->printer) = true;
+ diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL);
+ }
}
-target_options [] = TARGET_OPTIONS;
-#endif
-\f
-/* Options controlling warnings. */
-/* Don't print warning messages. -w. */
+/* Initialize local_tick with the time of day, or -1 if
+ flag_random_seed is set. */
-int inhibit_warnings = 0;
+static void
+init_local_tick (void)
+{
+ if (!flag_random_seed)
+ {
+ /* Get some more or less random data. */
+#ifdef HAVE_GETTIMEOFDAY
+ {
+ struct timeval tv;
-/* Don't suppress warnings from system headers. -Wsystem-headers. */
+ gettimeofday (&tv, NULL);
+ local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000;
+ }
+#else
+ {
+ time_t now = time (NULL);
-int warn_system_headers = 0;
+ if (now != (time_t)-1)
+ local_tick = (unsigned) now;
+ }
+#endif
+ }
+ else
+ local_tick = -1;
+}
-/* Print various extra warnings. -W. */
+/* Set up a default flag_random_seed and local_tick, unless the user
+ already specified one. Must be called after init_local_tick. */
-int extra_warnings = 0;
+static void
+init_random_seed (void)
+{
+ unsigned HOST_WIDE_INT value;
+ static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
-/* Treat warnings as errors. -Werror. */
+ value = local_tick ^ getpid ();
-int warnings_are_errors = 0;
+ sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
+ flag_random_seed = random_seed;
+}
-/* Nonzero to warn about unused variables, functions et.al. */
+/* Obtain the random_seed string. Unless NOINIT, initialize it if
+ it's not provided in the command line. */
-int warn_unused_function;
-int warn_unused_label;
-int warn_unused_parameter;
-int warn_unused_variable;
-int warn_unused_value;
+const char *
+get_random_seed (bool noinit)
+{
+ if (!flag_random_seed && !noinit)
+ init_random_seed ();
+ return flag_random_seed;
+}
-/* Nonzero to warn about code which is never reached. */
+/* Modify the random_seed string to VAL. Return its previous
+ value. */
-int warn_notreached;
+const char *
+set_random_seed (const char *val)
+{
+ const char *old = flag_random_seed;
+ flag_random_seed = val;
+ return old;
+}
-/* Nonzero to warn about variables used before they are initialized. */
+/* Decode the string P as an integral parameter.
+ If the string is indeed an integer return its numeric value else
+ issue an Invalid Option error for the option PNAME and return DEFVAL.
+ If PNAME is zero just return DEFVAL, do not call error. */
-int warn_uninitialized;
+int
+read_integral_parameter (const char *p, const char *pname, const int defval)
+{
+ const char *endp = p;
-/* Nonzero means warn about all declarations which shadow others. */
+ while (*endp)
+ {
+ if (ISDIGIT (*endp))
+ endp++;
+ else
+ break;
+ }
-int warn_shadow;
+ if (*endp != 0)
+ {
+ if (pname != 0)
+ error ("invalid option argument %qs", pname);
+ return defval;
+ }
-/* Warn if a switch on an enum fails to have a case for every enum value. */
+ return atoi (p);
+}
-int warn_switch;
+/* When compiling with a recent enough GCC, we use the GNU C "extern inline"
+ for floor_log2 and exact_log2; see toplev.h. That construct, however,
+ conflicts with the ISO C++ One Definition Rule. */
-/* Nonzero means warn about function definitions that default the return type
- or that use a null return and have a return-type other than void. */
+#if GCC_VERSION < 3004 || !defined (__cplusplus)
-int warn_return_type;
-
-/* Nonzero means warn about pointer casts that increase the required
- alignment of the target type (and might therefore lead to a crash
- due to a misaligned access). */
-
-int warn_cast_align;
-
-/* Nonzero means warn about any objects definitions whose size is larger
- than N bytes. Also want about function definitions whose returned
- values are larger than N bytes. The value N is in `larger_than_size'. */
-
-int warn_larger_than;
-HOST_WIDE_INT larger_than_size;
-
-/* Nonzero means warn if inline function is too large. */
-
-int warn_inline;
-
-/* Warn if a function returns an aggregate,
- since there are often incompatible calling conventions for doing this. */
-
-int warn_aggregate_return;
-
-/* Warn if packed attribute on struct is unnecessary and inefficient. */
-
-int warn_packed;
-
-/* Warn when gcc pads a structure to an alignment boundary. */
-
-int warn_padded;
-
-/* Warn when an optimization pass is disabled. */
-
-int warn_disabled_optimization;
-
-/* Warn about functions which might be candidates for attribute noreturn. */
-
-int warn_missing_noreturn;
-
-/* Nonzero means warn about uses of __attribute__((deprecated))
- declarations. */
-
-int warn_deprecated_decl = 1;
-
-/* Likewise for -W. */
-
-static const lang_independent_options W_options[] =
-{
- {"unused-function", &warn_unused_function, 1,
- N_("Warn when a function is unused") },
- {"unused-label", &warn_unused_label, 1,
- N_("Warn when a label is unused") },
- {"unused-parameter", &warn_unused_parameter, 1,
- N_("Warn when a function parameter is unused") },
- {"unused-variable", &warn_unused_variable, 1,
- N_("Warn when a variable is unused") },
- {"unused-value", &warn_unused_value, 1,
- N_("Warn when an expression value is unused") },
- {"system-headers", &warn_system_headers, 1,
- N_("Do not suppress warnings from system headers") },
- {"error", &warnings_are_errors, 1,
- N_("Treat all warnings as errors") },
- {"shadow", &warn_shadow, 1,
- N_("Warn when one local variable shadows another") },
- {"switch", &warn_switch, 1,
- N_("Warn about enumerated switches missing a specific case") },
- {"aggregate-return", &warn_aggregate_return, 1,
- N_("Warn about returning structures, unions or arrays") },
- {"cast-align", &warn_cast_align, 1,
- N_("Warn about pointer casts which increase alignment") },
- {"unreachable-code", &warn_notreached, 1,
- N_("Warn about code that will never be executed") },
- {"uninitialized", &warn_uninitialized, 1,
- N_("Warn about uninitialized automatic variables") },
- {"inline", &warn_inline, 1,
- N_("Warn when an inlined function cannot be inlined") },
- {"packed", &warn_packed, 1,
- N_("Warn when the packed attribute has no effect on struct layout") },
- {"padded", &warn_padded, 1,
- N_("Warn when padding is required to align struct members") },
- {"disabled-optimization", &warn_disabled_optimization, 1,
- N_("Warn when an optimization pass is disabled") },
- {"deprecated-declarations", &warn_deprecated_decl, 1,
- N_("Warn about uses of __attribute__((deprecated)) declarations") },
- {"missing-noreturn", &warn_missing_noreturn, 1,
- N_("Warn about functions which might be candidates for attribute noreturn") }
-};
-
-void
-set_Wunused (setting)
- int setting;
-{
- warn_unused_function = setting;
- warn_unused_label = setting;
- /* Unused function parameter warnings are reported when either ``-W
- -Wunused'' or ``-Wunused-parameter'' is specified. Differentiate
- -Wunused by setting WARN_UNUSED_PARAMETER to -1. */
- if (!setting)
- warn_unused_parameter = 0;
- else if (!warn_unused_parameter)
- warn_unused_parameter = -1;
- warn_unused_variable = setting;
- warn_unused_value = setting;
-}
-
-/* The following routines are useful in setting all the flags that
- -ffast-math and -fno-fast-math imply. */
-
-void
-set_fast_math_flags ()
-{
- flag_trapping_math = 0;
- flag_unsafe_math_optimizations = 1;
- flag_errno_math = 0;
-}
-
-void
-set_no_fast_math_flags ()
-{
- flag_trapping_math = 1;
- flag_unsafe_math_optimizations = 0;
- flag_errno_math = 1;
-}
-
-\f
-/* Output files for assembler code (real compiler output)
- and debugging dumps. */
-
-FILE *asm_out_file;
-FILE *aux_info_file;
-FILE *rtl_dump_file = NULL;
-
-/* Decode the string P as an integral parameter.
- If the string is indeed an integer return its numeric value else
- issue an Invalid Option error for the option PNAME and return DEFVAL.
- If PNAME is zero just return DEFVAL, do not call error. */
+/* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
+ If X is 0, return -1. */
int
-read_integral_parameter (p, pname, defval)
- const char *p;
- const char *pname;
- const int defval;
-{
- const char *endp = p;
-
- while (*endp)
- {
- if (ISDIGIT (*endp))
- endp++;
- else
- break;
- }
-
- if (*endp != 0)
- {
- if (pname != 0)
- error ("invalid option `%s'", pname);
- return defval;
- }
-
- return atoi (p);
-}
-
-\f
-/* This is the default decl_printable_name function. */
-
-static const char *
-decl_name (decl, verbosity)
- tree decl;
- int verbosity ATTRIBUTE_UNUSED;
+floor_log2 (unsigned HOST_WIDE_INT x)
{
- return IDENTIFIER_POINTER (DECL_NAME (decl));
-}
-\f
+ int t = 0;
-/* This calls abort and is used to avoid problems when abort if a macro.
- It is used when we need to pass the address of abort. */
+ if (x == 0)
+ return -1;
-void
-do_abort ()
-{
- abort ();
+#ifdef CLZ_HWI
+ t = HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x);
+#else
+ if (HOST_BITS_PER_WIDE_INT > 64)
+ if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64))
+ t += 64;
+ if (HOST_BITS_PER_WIDE_INT > 32)
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32))
+ t += 32;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16))
+ t += 16;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8))
+ t += 8;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4))
+ t += 4;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2))
+ t += 2;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1))
+ t += 1;
+#endif
+
+ return t;
}
-/* When `malloc.c' is compiled with `rcheck' defined,
- it calls this function to report clobberage. */
-
-void
-botch (s)
- const char *s ATTRIBUTE_UNUSED;
-{
- abort ();
-}
-\f
/* Return the logarithm of X, base 2, considering X unsigned,
- if X is a power of 2. Otherwise, returns -1.
-
- This should be used via the `exact_log2' macro. */
+ if X is a power of 2. Otherwise, returns -1. */
int
-exact_log2_wide (x)
- unsigned HOST_WIDE_INT x;
+exact_log2 (unsigned HOST_WIDE_INT x)
{
- int log = 0;
- /* Test for 0 or a power of 2. */
- if (x == 0 || x != (x & -x))
+ if (x != (x & -x))
return -1;
- while ((x >>= 1) != 0)
- log++;
- return log;
-}
-
-/* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
- If X is 0, return -1.
-
- This should be used via the floor_log2 macro. */
-
-int
-floor_log2_wide (x)
- unsigned HOST_WIDE_INT x;
-{
- int log = -1;
- while (x != 0)
- log++,
- x >>= 1;
- return log;
+#ifdef CTZ_HWI
+ return x ? CTZ_HWI (x) : -1;
+#else
+ return floor_log2 (x);
+#endif
}
-static int float_handler_set;
-int float_handled;
-jmp_buf float_handler;
-
-/* Signals actually come here. */
+#endif /* GCC_VERSION < 3004 || !defined (__cplusplus) */
-static void
-float_signal (signo)
- /* If this is missing, some compilers complain. */
- int signo ATTRIBUTE_UNUSED;
-{
- if (float_handled == 0)
- crash_signal (signo);
- float_handled = 0;
-
- /* On System-V derived systems, we must reinstall the signal handler.
- This is harmless on BSD-derived systems. */
- signal (SIGFPE, float_signal);
- longjmp (float_handler, 1);
-}
-
-/* Specify where to longjmp to when a floating arithmetic error happens.
- If HANDLER is 0, it means don't handle the errors any more. */
+/* Handler for fatal signals, such as SIGSEGV. These are transformed
+ into ICE messages, which is much more user friendly. In case the
+ error printer crashes, reset the signal to prevent infinite recursion. */
static void
-set_float_handler (handler)
- jmp_buf handler;
-{
- float_handled = (handler != 0);
- if (handler)
- memcpy (float_handler, handler, sizeof (float_handler));
-
- if (float_handled && ! float_handler_set)
- {
- signal (SIGFPE, float_signal);
- float_handler_set = 1;
- }
-}
-
-/* This is a wrapper function for code which might elicit an
- arithmetic exception. That code should be passed in as a function
- pointer FN, and one argument DATA. DATA is usually a struct which
- contains the real input and output for function FN. This function
- returns 0 (failure) if longjmp was called (i.e. an exception
- occurred.) It returns 1 (success) otherwise. */
-
-int
-do_float_handler (fn, data)
- void (*fn) PARAMS ((PTR));
- PTR data;
+crash_signal (int signo)
{
- jmp_buf buf;
+ signal (signo, SIG_DFL);
- if (setjmp (buf))
+ /* If we crashed while processing an ASM statement, then be a little more
+ graceful. It's most likely the user's fault. */
+ if (this_is_asm_operands)
{
- /* We got here via longjmp () caused by an exception in function
- fn (). */
- set_float_handler (NULL);
- return 0;
+ output_operand_lossage ("unrecoverable error");
+ exit (FATAL_EXIT_CODE);
}
- set_float_handler (buf);
- (*fn)(data);
- set_float_handler (NULL);
- return 1;
+ internal_error ("%s", strsignal (signo));
}
-/* Handler for fatal signals, such as SIGSEGV. These are transformed
- into ICE messages, which is much more user friendly. */
+/* Arrange to dump core on error. (The regular error message is still
+ printed first, except in the case of abort().) */
static void
-crash_signal (signo)
- int signo;
+setup_core_dumping (void)
{
- internal_error ("internal error: %s", strsignal (signo));
+#ifdef SIGABRT
+ signal (SIGABRT, SIG_DFL);
+#endif
+#if defined(HAVE_SETRLIMIT)
+ {
+ struct rlimit rlim;
+ if (getrlimit (RLIMIT_CORE, &rlim) != 0)
+ fatal_error ("getting core file size maximum limit: %m");
+ rlim.rlim_cur = rlim.rlim_max;
+ if (setrlimit (RLIMIT_CORE, &rlim) != 0)
+ fatal_error ("setting core file size limit to maximum: %m");
+ }
+#endif
+ diagnostic_abort_on_error (global_dc);
}
+
/* Strip off a legitimate source ending from the input string NAME of
length LEN. Rather than having to know the names used by all of
our front ends, we strip off an ending of a period followed by
up to five characters. (Java uses ".class".) */
void
-strip_off_ending (name, len)
- char *name;
- int len;
+strip_off_ending (char *name, int len)
{
int i;
- for (i = 2; i < 6 && len > i; i++)
+ for (i = 2; i < 6 && len > i; i++)
{
if (name[len - i] == '.')
{
/* Output a quoted string. */
void
-output_quoted_string (asm_file, string)
- FILE *asm_file;
- const char *string;
+output_quoted_string (FILE *asm_file, const char *string)
{
#ifdef OUTPUT_QUOTED_STRING
OUTPUT_QUOTED_STRING (asm_file, string);
putc (c, asm_file);
}
else
- fprintf (asm_file, "\\%03o", c);
+ fprintf (asm_file, "\\%03o", (unsigned char) c);
}
putc ('\"', asm_file);
#endif
/* Output a file name in the form wanted by System V. */
void
-output_file_directive (asm_file, input_name)
- FILE *asm_file;
- const char *input_name;
+output_file_directive (FILE *asm_file, const char *input_name)
{
- int len = strlen (input_name);
- const char *na = input_name + len;
+ int len;
+ const char *na;
+
+ if (input_name == NULL)
+ input_name = "<stdin>";
+ else
+ input_name = remap_debug_filename (input_name);
+
+ len = strlen (input_name);
+ na = input_name + len;
/* NA gets INPUT_NAME sans directory names. */
while (na > input_name)
{
if (IS_DIR_SEPARATOR (na[-1]))
- break;
+ break;
na--;
}
-#ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
- ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na);
-#else
#ifdef ASM_OUTPUT_SOURCE_FILENAME
ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
#else
output_quoted_string (asm_file, na);
fputc ('\n', asm_file);
#endif
-#endif
}
-\f
-/* Routine to open a dump file. Return true if the dump file is enabled. */
-
-static int
-open_dump_file (index, decl)
- enum dump_file_index index;
- tree decl;
-{
- char *dump_name;
- const char *open_arg;
- char seq[16];
-
- if (! dump_file[index].enabled)
- return 0;
-
- timevar_push (TV_DUMP);
- if (rtl_dump_file != NULL)
- fclose (rtl_dump_file);
-
- sprintf (seq, DUMPFILE_FORMAT, index);
-
- if (! dump_file[index].initialized)
- {
- /* If we've not initialized the files, do so now. */
- if (graph_dump_format != no_graph
- && dump_file[index].graph_dump_p)
- {
- dump_name = concat (seq, dump_file[index].extension, NULL);
- clean_graph_dump_file (dump_base_name, dump_name);
- free (dump_name);
- }
- dump_file[index].initialized = 1;
- open_arg = "w";
- }
- else
- open_arg = "a";
-
- dump_name = concat (dump_base_name, seq,
- dump_file[index].extension, NULL);
-
- rtl_dump_file = fopen (dump_name, open_arg);
- if (rtl_dump_file == NULL)
- fatal_io_error ("can't open %s", dump_name);
-
- free (dump_name);
- if (decl)
- fprintf (rtl_dump_file, "\n;; Function %s\n\n",
- decl_printable_name (decl, 2));
+/* A subroutine of wrapup_global_declarations. We've come to the end of
+ the compilation unit. All deferred variables should be undeferred,
+ and all incomplete decls should be finalized. */
- timevar_pop (TV_DUMP);
- return 1;
+void
+wrapup_global_declaration_1 (tree decl)
+{
+ /* We're not deferring this any longer. Assignment is conditional to
+ avoid needlessly dirtying PCH pages. */
+ if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS)
+ && DECL_DEFER_OUTPUT (decl) != 0)
+ DECL_DEFER_OUTPUT (decl) = 0;
+
+ if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0)
+ lang_hooks.finish_incomplete_decl (decl);
}
-/* Routine to close a dump file. */
+/* A subroutine of wrapup_global_declarations. Decide whether or not DECL
+ needs to be output. Return true if it is output. */
-static void
-close_dump_file (index, func, insns)
- enum dump_file_index index;
- void (*func) PARAMS ((FILE *, rtx));
- rtx insns;
+bool
+wrapup_global_declaration_2 (tree decl)
{
- if (! rtl_dump_file)
- return;
-
- timevar_push (TV_DUMP);
- if (insns
- && graph_dump_format != no_graph
- && dump_file[index].graph_dump_p)
- {
- char seq[16];
- char *suffix;
-
- sprintf (seq, DUMPFILE_FORMAT, index);
- suffix = concat (seq, dump_file[index].extension, NULL);
- print_rtl_graph_with_bb (dump_base_name, suffix, insns);
- free (suffix);
+ if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
+ return false;
+
+ /* Don't write out static consts, unless we still need them.
+
+ We also keep static consts if not optimizing (for debugging),
+ unless the user specified -fno-keep-static-consts.
+ ??? They might be better written into the debug information.
+ This is possible when using DWARF.
+
+ A language processor that wants static constants to be always
+ written out (even if it is not used) is responsible for
+ calling rest_of_decl_compilation itself. E.g. the C front-end
+ calls rest_of_decl_compilation from finish_decl.
+ One motivation for this is that is conventional in some
+ environments to write things like:
+ static const char rcsid[] = "... version string ...";
+ intending to force the string to be in the executable.
+
+ A language processor that would prefer to have unneeded
+ static constants "optimized away" would just defer writing
+ them out until here. E.g. C++ does this, because static
+ constants are often defined in header files.
+
+ ??? A tempting alternative (for both C and C++) would be
+ to force a constant to be written if and only if it is
+ defined in a main file, as opposed to an include file. */
+
+ if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
+ {
+ struct varpool_node *node;
+ bool needed = true;
+ node = varpool_node (decl);
+
+ if (node->finalized)
+ needed = false;
+ else if (node->alias)
+ needed = false;
+ else if (!cgraph_global_info_ready
+ && (TREE_USED (decl)
+ || TREE_USED (DECL_ASSEMBLER_NAME (decl))))
+ /* needed */;
+ else if (node->needed)
+ /* needed */;
+ else if (DECL_COMDAT (decl))
+ needed = false;
+ else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl)
+ && (optimize || !flag_keep_static_consts
+ || DECL_ARTIFICIAL (decl)))
+ needed = false;
+
+ if (needed)
+ {
+ rest_of_decl_compilation (decl, 1, 1);
+ return true;
+ }
}
- if (func && insns)
- func (rtl_dump_file, insns);
-
- fflush (rtl_dump_file);
- fclose (rtl_dump_file);
-
- rtl_dump_file = NULL;
- timevar_pop (TV_DUMP);
+ return false;
}
/* Do any final processing required for the declarations in VEC, of
which there are LEN. We write out inline functions and variables
that have been deferred until this point, but which are required.
- Returns non-zero if anything was put out. */
+ Returns nonzero if anything was put out. */
-int
-wrapup_global_declarations (vec, len)
- tree *vec;
- int len;
+bool
+wrapup_global_declarations (tree *vec, int len)
{
- tree decl;
+ bool reconsider, output_something = false;
int i;
- int reconsider;
- int output_something = 0;
for (i = 0; i < len; i++)
- {
- decl = vec[i];
-
- /* We're not deferring this any longer. */
- DECL_DEFER_OUTPUT (decl) = 0;
-
- if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0
- && incomplete_decl_finalize_hook != 0)
- (*incomplete_decl_finalize_hook) (decl);
- }
+ wrapup_global_declaration_1 (vec[i]);
/* Now emit any global variables or functions that we have been
putting off. We need to loop in case one of the things emitted
here references another one which comes earlier in the list. */
do
{
- reconsider = 0;
+ reconsider = false;
for (i = 0; i < len; i++)
- {
- decl = vec[i];
-
- if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
- continue;
-
- /* Don't write out static consts, unless we still need them.
-
- We also keep static consts if not optimizing (for debugging),
- unless the user specified -fno-keep-static-consts.
- ??? They might be better written into the debug information.
- This is possible when using DWARF.
-
- A language processor that wants static constants to be always
- written out (even if it is not used) is responsible for
- calling rest_of_decl_compilation itself. E.g. the C front-end
- calls rest_of_decl_compilation from finish_decl.
- One motivation for this is that is conventional in some
- environments to write things like:
- static const char rcsid[] = "... version string ...";
- intending to force the string to be in the executable.
-
- A language processor that would prefer to have unneeded
- static constants "optimized away" would just defer writing
- them out until here. E.g. C++ does this, because static
- constants are often defined in header files.
-
- ??? A tempting alternative (for both C and C++) would be
- to force a constant to be written if and only if it is
- defined in a main file, as opposed to an include file. */
-
- if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
- {
- bool needed = 1;
-
- if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
- /* needed */;
- else if (DECL_COMDAT (decl))
- needed = 0;
- else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl)
- && (optimize || !flag_keep_static_consts
- || DECL_ARTIFICIAL (decl)))
- needed = 0;
-
- if (needed)
- {
- reconsider = 1;
- rest_of_decl_compilation (decl, NULL, 1, 1);
- }
- }
-
- if (TREE_CODE (decl) == FUNCTION_DECL
- && DECL_INITIAL (decl) != 0
- && DECL_SAVED_INSNS (decl) != 0
- && (flag_keep_inline_functions
- || (TREE_PUBLIC (decl) && !DECL_COMDAT (decl))
- || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
- {
- reconsider = 1;
- output_inline_function (decl);
- }
- }
-
+ reconsider |= wrapup_global_declaration_2 (vec[i]);
if (reconsider)
- output_something = 1;
+ output_something = true;
}
while (reconsider);
return output_something;
}
+/* A subroutine of check_global_declarations. Issue appropriate warnings
+ for the global declaration DECL. */
+
+void
+check_global_declaration_1 (tree decl)
+{
+ /* Warn about any function declared static but not defined. We don't
+ warn about variables, because many programs have static variables
+ that exist only to get some text into the object file. */
+ if (TREE_CODE (decl) == FUNCTION_DECL
+ && DECL_INITIAL (decl) == 0
+ && DECL_EXTERNAL (decl)
+ && ! DECL_ARTIFICIAL (decl)
+ && ! TREE_NO_WARNING (decl)
+ && ! TREE_PUBLIC (decl)
+ && (warn_unused_function
+ || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
+ {
+ if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
+ pedwarn (input_location, 0, "%q+F used but never defined", decl);
+ else
+ warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl);
+ /* This symbol is effectively an "extern" declaration now. */
+ TREE_PUBLIC (decl) = 1;
+ assemble_external (decl);
+ }
+
+ /* Warn about static fns or vars defined but not used. */
+ if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL)
+ /* We don't warn about "static const" variables because the
+ "rcs_id" idiom uses that construction. */
+ || (warn_unused_variable
+ && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
+ && ! DECL_IN_SYSTEM_HEADER (decl)
+ && ! TREE_USED (decl)
+ /* The TREE_USED bit for file-scope decls is kept in the identifier,
+ to handle multiple external decls in different scopes. */
+ && ! (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl)))
+ && ! DECL_EXTERNAL (decl)
+ && ! TREE_PUBLIC (decl)
+ /* A volatile variable might be used in some non-obvious way. */
+ && ! TREE_THIS_VOLATILE (decl)
+ /* Global register variables must be declared to reserve them. */
+ && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
+ /* Otherwise, ask the language. */
+ && lang_hooks.decls.warn_unused_global (decl))
+ warning ((TREE_CODE (decl) == FUNCTION_DECL)
+ ? OPT_Wunused_function
+ : OPT_Wunused_variable,
+ "%q+D defined but not used", decl);
+}
+
/* Issue appropriate warnings for the global declarations in VEC (of
- which there are LEN). Output debugging information for them. */
+ which there are LEN). */
void
-check_global_declarations (vec, len)
- tree *vec;
- int len;
+check_global_declarations (tree *vec, int len)
{
- tree decl;
int i;
for (i = 0; i < len; i++)
- {
- decl = vec[i];
-
- if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
- && ! TREE_ASM_WRITTEN (decl))
- /* Cancel the RTL for this decl so that, if debugging info
- output for global variables is still to come,
- this one will be omitted. */
- SET_DECL_RTL (decl, NULL_RTX);
-
- /* Warn about any function
- declared static but not defined.
- We don't warn about variables,
- because many programs have static variables
- that exist only to get some text into the object file. */
- if (TREE_CODE (decl) == FUNCTION_DECL
- && (warn_unused_function
- || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
- && DECL_INITIAL (decl) == 0
- && DECL_EXTERNAL (decl)
- && ! DECL_ARTIFICIAL (decl)
- && ! TREE_PUBLIC (decl))
- {
- if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
- pedwarn_with_decl (decl,
- "`%s' used but never defined");
- else
- warning_with_decl (decl,
- "`%s' declared `static' but never defined");
- /* This symbol is effectively an "extern" declaration now. */
- TREE_PUBLIC (decl) = 1;
- assemble_external (decl);
- }
-
- /* Warn about static fns or vars defined but not used,
- but not about inline functions or static consts
- since defining those in header files is normal practice. */
- if (((warn_unused_function
- && TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl))
- || (warn_unused_variable
- && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
- && ! DECL_IN_SYSTEM_HEADER (decl)
- && ! DECL_EXTERNAL (decl)
- && ! TREE_PUBLIC (decl)
- && ! TREE_USED (decl)
- && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl))
- /* The TREE_USED bit for file-scope decls
- is kept in the identifier, to handle multiple
- external decls in different scopes. */
- && ! TREE_USED (DECL_NAME (decl)))
- warning_with_decl (decl, "`%s' defined but not used");
-
- timevar_push (TV_SYMOUT);
- (*debug_hooks->global_decl) (decl);
- timevar_pop (TV_SYMOUT);
- }
+ check_global_declaration_1 (vec[i]);
}
-/* Save the current INPUT_FILENAME and LINENO on the top entry in the
- INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the
- INPUT_FILENAME and LINENO accordingly. */
+/* Emit debugging information for all global declarations in VEC. */
void
-push_srcloc (file, line)
- const char *file;
- int line;
+emit_debug_global_declarations (tree *vec, int len)
{
- struct file_stack *fs;
+ int i;
- if (input_file_stack)
- {
- input_file_stack->name = input_filename;
- input_file_stack->line = lineno;
- }
+ /* Avoid confusing the debug information machinery when there are errors. */
+ if (errorcount != 0 || sorrycount != 0)
+ return;
- fs = (struct file_stack *) xmalloc (sizeof (struct file_stack));
- fs->name = input_filename = file;
- fs->line = lineno = line;
- fs->indent_level = 0;
- fs->next = input_file_stack;
- input_file_stack = fs;
- input_file_stack_tick++;
+ timevar_push (TV_SYMOUT);
+ for (i = 0; i < len; i++)
+ debug_hooks->global_decl (vec[i]);
+ timevar_pop (TV_SYMOUT);
}
-/* Pop the top entry off the stack of presently open source files.
- Restore the INPUT_FILENAME and LINENO from the new topmost entry on
- the stack. */
-
+/* Warn about a use of an identifier which was marked deprecated. */
void
-pop_srcloc ()
+warn_deprecated_use (tree node)
{
- struct file_stack *fs;
-
- fs = input_file_stack;
- input_file_stack = fs->next;
- free (fs);
- input_file_stack_tick++;
- /* The initial source file is never popped. */
- if (!input_file_stack)
- abort ();
- input_filename = input_file_stack->name;
- lineno = input_file_stack->line;
+ if (node == 0 || !warn_deprecated_decl)
+ return;
+
+ if (DECL_P (node))
+ {
+ expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node));
+ warning (OPT_Wdeprecated_declarations,
+ "%qD is deprecated (declared at %s:%d)",
+ node, xloc.file, xloc.line);
+ }
+ else if (TYPE_P (node))
+ {
+ const char *what = NULL;
+ tree decl = TYPE_STUB_DECL (node);
+
+ if (TYPE_NAME (node))
+ {
+ if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
+ what = IDENTIFIER_POINTER (TYPE_NAME (node));
+ else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
+ && DECL_NAME (TYPE_NAME (node)))
+ what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node)));
+ }
+
+ if (decl)
+ {
+ expanded_location xloc
+ = expand_location (DECL_SOURCE_LOCATION (decl));
+ if (what)
+ warning (OPT_Wdeprecated_declarations,
+ "%qs is deprecated (declared at %s:%d)", what,
+ xloc.file, xloc.line);
+ else
+ warning (OPT_Wdeprecated_declarations,
+ "type is deprecated (declared at %s:%d)",
+ xloc.file, xloc.line);
+ }
+ else
+ {
+ if (what)
+ warning (OPT_Wdeprecated_declarations, "%qs is deprecated", what);
+ else
+ warning (OPT_Wdeprecated_declarations, "type is deprecated");
+ }
+ }
}
/* Compile an entire translation unit. Write a file of assembly
output and various debugging dumps. */
static void
-compile_file ()
+compile_file (void)
{
- tree globals;
-
/* Initialize yet another pass. */
+ ggc_protect_identifiers = true;
+
+ init_cgraph ();
init_final (main_input_filename);
- init_branch_prob (dump_base_name);
+ coverage_init (aux_base_name);
+ statistics_init ();
timevar_push (TV_PARSE);
- /* Call the parser, which parses the entire file
- (calling rest_of_compilation for each function). */
- yyparse ();
-
- /* In case there were missing block closers,
- get us back to the global binding level. */
- (*lang_hooks.clear_binding_stack) ();
+ /* Call the parser, which parses the entire file (calling
+ rest_of_compilation for each function). */
+ lang_hooks.parse_file (set_yydebug);
/* Compilation is now finished except for writing
what's left of the symbol table output. */
-
timevar_pop (TV_PARSE);
if (flag_syntax_only)
return;
- globals = getdecls ();
-
- /* Really define vars that have had only a tentative definition.
- Really output inline functions that must actually be callable
- and have not been output so far. */
-
- {
- int len = list_length (globals);
- tree *vec = (tree *) xmalloc (sizeof (tree) * len);
- int i;
- tree decl;
+ ggc_protect_identifiers = false;
- /* Process the decls in reverse order--earliest first.
- Put them into VEC from back to front, then take out from front. */
+ lang_hooks.decls.final_write_globals ();
- for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl))
- vec[len - i - 1] = decl;
+ if (errorcount || sorrycount)
+ return;
- wrapup_global_declarations (vec, len);
+ varpool_assemble_pending_decls ();
+ finish_aliases_2 ();
- /* This must occur after the loop to output deferred functions. Else
- the profiler initializer would not be emitted if all the functions
- in this compilation unit were deferred.
+ /* This must occur after the loop to output deferred functions.
+ Else the coverage initializer would not be emitted if all the
+ functions in this compilation unit were deferred. */
+ coverage_finish ();
- output_func_start_profiler can not cause any additional functions or
- data to need to be output, so it need not be in the deferred function
- loop above. */
- output_func_start_profiler ();
+ /* Likewise for mudflap static object registrations. */
+ if (flag_mudflap)
+ mudflap_finish_file ();
- check_global_declarations (vec, len);
+ /* Likewise for emulated thread-local storage. */
+ if (!targetm.have_tls)
+ emutls_finish ();
- /* Clean up. */
- free (vec);
- }
+ output_shared_constant_pool ();
+ output_object_blocks ();
/* Write out any pending weak symbol declarations. */
-
weak_finish ();
/* Do dbx symbols. */
timevar_push (TV_SYMOUT);
-#ifdef DWARF2_UNWIND_INFO
+#if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO
if (dwarf2out_do_frame ())
dwarf2out_frame_finish ();
#endif
dw2_output_indirect_constants ();
- end_final (dump_base_name);
-
- if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
- {
- timevar_push (TV_DUMP);
- open_dump_file (DFI_bp, NULL);
-
- end_branch_prob ();
-
- close_dump_file (DFI_bp, NULL, NULL_RTX);
- timevar_pop (TV_DUMP);
- }
-
-#ifdef ASM_FILE_END
- ASM_FILE_END (asm_out_file);
-#endif
+ /* Flush any pending external directives. */
+ process_pending_assemble_externals ();
/* Attach a special .ident directive to the end of the file to identify
the version of GCC which compiled this code. The format of the .ident
string is patterned after the ones produced by native SVR4 compilers. */
#ifdef IDENT_ASM_OP
if (!flag_no_ident)
- fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n",
- IDENT_ASM_OP, version_string);
-#endif
-
- if (optimize > 0 && open_dump_file (DFI_combine, NULL))
{
- timevar_push (TV_DUMP);
- dump_combine_total_stats (rtl_dump_file);
- close_dump_file (DFI_combine, NULL, NULL_RTX);
- timevar_pop (TV_DUMP);
- }
-}
-\f
-/* This is called from various places for FUNCTION_DECL, VAR_DECL,
- and TYPE_DECL nodes.
+ const char *pkg_version = "(GNU) ";
- This does nothing for local (non-static) variables, unless the
- variable is a register variable with an ASMSPEC. In that case, or
- if the variable is not an automatic, it sets up the RTL and
- outputs any assembler code (label definition, storage allocation
- and initialization).
-
- DECL is the declaration. If ASMSPEC is nonzero, it specifies
- the assembler symbol name to be used. TOP_LEVEL is nonzero
- if this declaration is not within a function. */
-
-void
-rest_of_decl_compilation (decl, asmspec, top_level, at_end)
- tree decl;
- const char *asmspec;
- int top_level;
- int at_end;
-{
- /* Declarations of variables, and of functions defined elsewhere. */
-
-/* The most obvious approach, to put an #ifndef around where
- this macro is used, doesn't work since it's inside a macro call. */
-#ifndef ASM_FINISH_DECLARE_OBJECT
-#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
-#endif
-
- /* We deferred calling assemble_alias so that we could collect
- other attributes such as visibility. Emit the alias now. */
- {
- tree alias;
- alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl));
- if (alias)
- {
- alias = TREE_VALUE (TREE_VALUE (alias));
- alias = get_identifier (TREE_STRING_POINTER (alias));
- assemble_alias (decl, alias);
- }
- }
-
- /* Forward declarations for nested functions are not "external",
- but we need to treat them as if they were. */
- if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)
- || TREE_CODE (decl) == FUNCTION_DECL)
- {
- timevar_push (TV_VARCONST);
- if (asmspec)
- make_decl_rtl (decl, asmspec);
- /* Don't output anything
- when a tentative file-scope definition is seen.
- But at end of compilation, do output code for them. */
- if (at_end || !DECL_DEFER_OUTPUT (decl))
- assemble_variable (decl, top_level, at_end, 0);
- if (decl == last_assemble_variable_decl)
- {
- ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
- top_level, at_end);
- }
- timevar_pop (TV_VARCONST);
- }
- else if (DECL_REGISTER (decl) && asmspec != 0)
- {
- if (decode_reg_name (asmspec) >= 0)
- {
- SET_DECL_RTL (decl, NULL_RTX);
- make_decl_rtl (decl, asmspec);
- }
- else
- {
- error ("invalid register name `%s' for register variable", asmspec);
- DECL_REGISTER (decl) = 0;
- if (!top_level)
- expand_decl (decl);
- }
- }
-#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- && TREE_CODE (decl) == TYPE_DECL)
- {
- timevar_push (TV_SYMOUT);
- dbxout_symbol (decl, 0);
- timevar_pop (TV_SYMOUT);
- }
-#endif
-#ifdef SDB_DEBUGGING_INFO
- else if (write_symbols == SDB_DEBUG && top_level
- && TREE_CODE (decl) == TYPE_DECL)
- {
- timevar_push (TV_SYMOUT);
- sdbout_symbol (decl, 0);
- timevar_pop (TV_SYMOUT);
+ if (strcmp ("(GCC) ", pkgversion_string))
+ pkg_version = pkgversion_string;
+ fprintf (asm_out_file, "%s\"GCC: %s%s\"\n",
+ IDENT_ASM_OP, pkg_version, version_string);
}
#endif
+
+ /* This must be at the end. Some target ports emit end of file directives
+ into the assembly file here, and hence we can not output anything to the
+ assembly file after this point. */
+ targetm.asm_out.file_end ();
}
-/* Called after finishing a record, union or enumeral type. */
+/* Parse a -d... command line switch. */
void
-rest_of_type_compilation (type, toplev)
-#if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) || defined (SDB_DEBUGGING_INFO)
- tree type;
- int toplev;
-#else
- tree type ATTRIBUTE_UNUSED;
- int toplev ATTRIBUTE_UNUSED;
-#endif
+decode_d_option (const char *arg)
{
- timevar_push (TV_SYMOUT);
-#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- dbxout_symbol (TYPE_STUB_DECL (type), !toplev);
-#endif
-#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_symbol (TYPE_STUB_DECL (type), !toplev);
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
- if ((write_symbols == DWARF2_DEBUG
- || write_symbols == VMS_AND_DWARF2_DEBUG)
- && toplev)
- dwarf2out_decl (TYPE_STUB_DECL (type));
-#endif
- timevar_pop (TV_SYMOUT);
-}
-
-/* This is called from finish_function (within yyparse)
- after each top-level definition is parsed.
- It is supposed to compile that function or variable
- and output the assembler code for it.
- After we return, the tree storage is freed. */
-
-void
-rest_of_compilation (decl)
- tree decl;
-{
- rtx insns;
- int tem;
- int failure = 0;
- int rebuild_label_notes_after_reload;
- int register_life_up_to_date;
- int cleanup_crossjump;
-
- timevar_push (TV_REST_OF_COMPILATION);
-
- /* Now that we're out of the frontend, we shouldn't have any more
- CONCATs anywhere. */
- generating_concat_p = 0;
-
- /* When processing delayed functions, prepare_function_start() won't
- have been run to re-initialize it. */
- cse_not_expected = ! optimize;
-
- /* First, make sure that NOTE_BLOCK is set correctly for each
- NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */
- if (!cfun->x_whole_function_mode_p)
- identify_blocks ();
-
- /* In function-at-a-time mode, we do not attempt to keep the BLOCK
- tree in sensible shape. So, we just recalculate it here. */
- if (cfun->x_whole_function_mode_p)
- reorder_blocks ();
-
- init_flow ();
-
- /* If we are reconsidering an inline function
- at the end of compilation, skip the stuff for making it inline. */
-
- if (DECL_SAVED_INSNS (decl) == 0)
- {
- int inlinable = 0;
- tree parent;
- const char *lose;
-
- /* If this is nested inside an inlined external function, pretend
- it was only declared. Since we cannot inline such functions,
- generating code for this one is not only not necessary but will
- confuse some debugging output writers. */
- for (parent = DECL_CONTEXT (current_function_decl);
- parent != NULL_TREE;
- parent = get_containing_scope (parent))
- if (TREE_CODE (parent) == FUNCTION_DECL
- && DECL_INLINE (parent) && DECL_EXTERNAL (parent))
- {
- DECL_INITIAL (decl) = 0;
- goto exit_rest_of_compilation;
- }
- else if (TYPE_P (parent))
- /* A function in a local class should be treated normally. */
- break;
-
- /* If requested, consider whether to make this function inline. */
- if ((DECL_INLINE (decl) && !flag_no_inline)
- || flag_inline_functions)
- {
- timevar_push (TV_INTEGRATION);
- lose = function_cannot_inline_p (decl);
- timevar_pop (TV_INTEGRATION);
- if (lose || ! optimize)
- {
- if (warn_inline && DECL_INLINE (decl))
- warning_with_decl (decl, lose);
- DECL_ABSTRACT_ORIGIN (decl) = 0;
- /* Don't really compile an extern inline function.
- If we can't make it inline, pretend
- it was only declared. */
- if (DECL_EXTERNAL (decl))
- {
- DECL_INITIAL (decl) = 0;
- goto exit_rest_of_compilation;
- }
- }
- else
- /* ??? Note that this has the effect of making it look
- like "inline" was specified for a function if we choose
- to inline it. This isn't quite right, but it's
- probably not worth the trouble to fix. */
- inlinable = DECL_INLINE (decl) = 1;
- }
-
- insns = get_insns ();
-
- /* Dump the rtl code if we are dumping rtl. */
-
- if (open_dump_file (DFI_rtl, decl))
- {
- if (DECL_SAVED_INSNS (decl))
- fprintf (rtl_dump_file, ";; (integrable)\n\n");
- close_dump_file (DFI_rtl, print_rtl, insns);
- }
-
- /* Convert from NOTE_INSN_EH_REGION style notes, and do other
- sorts of eh initialization. Delay this until after the
- initial rtl dump so that we can see the original nesting. */
- convert_from_eh_region_ranges ();
-
- /* If function is inline, and we don't yet know whether to
- compile it by itself, defer decision till end of compilation.
- finish_compilation will call rest_of_compilation again
- for those functions that need to be output. Also defer those
- functions that we are supposed to defer. */
-
- if (inlinable
- || (DECL_INLINE (decl)
- && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
- && ! TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))
- && ! flag_keep_inline_functions)
- || DECL_EXTERNAL (decl))))
- DECL_DEFER_OUTPUT (decl) = 1;
-
- if (DECL_INLINE (decl))
- /* DWARF wants separate debugging info for abstract and
- concrete instances of all inline functions, including those
- declared inline but not inlined, and those inlined even
- though they weren't declared inline. Conveniently, that's
- what DECL_INLINE means at this point. */
- (*debug_hooks->deferred_inline_function) (decl);
-
- if (DECL_DEFER_OUTPUT (decl))
- {
- /* If -Wreturn-type, we have to do a bit of compilation. We just
- want to call cleanup the cfg to figure out whether or not we can
- fall off the end of the function; we do the minimum amount of
- work necessary to make that safe. */
- if (warn_return_type)
- {
- int saved_optimize = optimize;
-
- optimize = 0;
- rebuild_jump_labels (insns);
- find_exception_handler_labels ();
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_PRE_SIBCALL | CLEANUP_PRE_LOOP);
- optimize = saved_optimize;
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- }
-
- current_function_nothrow = nothrow_function_p ();
- if (current_function_nothrow)
- /* Now we know that this can't throw; set the flag for the benefit
- of other functions later in this translation unit. */
- TREE_NOTHROW (current_function_decl) = 1;
-
- timevar_push (TV_INTEGRATION);
- save_for_inline (decl);
- timevar_pop (TV_INTEGRATION);
- DECL_SAVED_INSNS (decl)->inlinable = inlinable;
- goto exit_rest_of_compilation;
- }
-
- /* If specified extern inline but we aren't inlining it, we are
- done. This goes for anything that gets here with DECL_EXTERNAL
- set, not just things with DECL_INLINE. */
- if (DECL_EXTERNAL (decl))
- goto exit_rest_of_compilation;
- }
-
- /* If we're emitting a nested function, make sure its parent gets
- emitted as well. Doing otherwise confuses debug info. */
- {
- tree parent;
- for (parent = DECL_CONTEXT (current_function_decl);
- parent != NULL_TREE;
- parent = get_containing_scope (parent))
- if (TREE_CODE (parent) == FUNCTION_DECL)
- TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (parent)) = 1;
- }
-
- /* We are now committed to emitting code for this function. Do any
- preparation, such as emitting abstract debug info for the inline
- before it gets mangled by optimization. */
- if (DECL_INLINE (decl))
- (*debug_hooks->outlining_inline_function) (decl);
-
- /* Remove any notes we don't need. That will make iterating
- over the instruction sequence faster, and allow the garbage
- collector to reclaim the memory used by the notes. */
- remove_unnecessary_notes ();
- reorder_blocks ();
-
- ggc_collect ();
-
- /* Initialize some variables used by the optimizers. */
- init_function_for_compilation ();
-
- if (! DECL_DEFER_OUTPUT (decl))
- TREE_ASM_WRITTEN (decl) = 1;
-
- /* Now that integrate will no longer see our rtl, we need not
- distinguish between the return value of this function and the
- return value of called functions. Also, we can remove all SETs
- of subregs of hard registers; they are only here because of
- integrate. Also, we can now initialize pseudos intended to
- carry magic hard reg data throughout the function. */
- rtx_equal_function_value_matters = 0;
- purge_hard_subreg_sets (get_insns ());
-
- /* Early return if there were errors. We can run afoul of our
- consistency checks, and there's not really much point in fixing them.
- Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */
- if (((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
- || errorcount || sorrycount)
- goto exit_rest_of_compilation;
-
- /* We may have potential sibling or tail recursion sites. Select one
- (of possibly multiple) methods of performing the call. */
- if (flag_optimize_sibling_calls)
- {
- timevar_push (TV_JUMP);
- open_dump_file (DFI_sibling, decl);
-
- optimize_sibling_and_tail_recursive_calls ();
-
- close_dump_file (DFI_sibling, print_rtl, get_insns ());
- timevar_pop (TV_JUMP);
- }
-
- /* Complete generation of exception handling code. */
- find_exception_handler_labels ();
- if (doing_eh (0))
- {
- timevar_push (TV_JUMP);
- open_dump_file (DFI_eh, decl);
-
- finish_eh_generation ();
-
- close_dump_file (DFI_eh, print_rtl, get_insns ());
- timevar_pop (TV_JUMP);
- }
-
- /* Delay emitting hard_reg_initial_value sets until after EH landing pad
- generation, which might create new sets. */
- emit_initial_value_sets ();
-
-#ifdef FINALIZE_PIC
- /* If we are doing position-independent code generation, now
- is the time to output special prologues and epilogues.
- We do not want to do this earlier, because it just clutters
- up inline functions with meaningless insns. */
- if (flag_pic)
- FINALIZE_PIC;
-#endif
-
- insns = get_insns ();
-
- /* Copy any shared structure that should not be shared. */
- unshare_all_rtl (current_function_decl, insns);
-
-#ifdef SETJMP_VIA_SAVE_AREA
- /* This must be performed before virtual register instantiation. */
- if (current_function_calls_alloca)
- optimize_save_area_alloca (insns);
-#endif
-
- /* Instantiate all virtual registers. */
- instantiate_virtual_regs (current_function_decl, insns);
-
- open_dump_file (DFI_jump, decl);
-
- /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
- are initialized and to compute whether control can drop off the end
- of the function. */
-
- timevar_push (TV_JUMP);
- /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this
- before jump optimization switches branch directions. */
- expected_value_to_br_prob ();
-
- reg_scan (insns, max_reg_num (), 0);
- rebuild_jump_labels (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP);
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- copy_loop_headers (insns);
- purge_line_number_notes (insns);
-
- timevar_pop (TV_JUMP);
-
- /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
- if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
- {
- close_dump_file (DFI_jump, print_rtl, insns);
- goto exit_rest_of_compilation;
- }
-
- /* Long term, this should probably move before the jump optimizer too,
- but I didn't want to disturb the rtl_dump_and_exit and related
- stuff at this time. */
- if (optimize > 0 && flag_ssa)
- {
- /* Convert to SSA form. */
-
- timevar_push (TV_TO_SSA);
- open_dump_file (DFI_ssa, decl);
-
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- convert_to_ssa ();
-
- close_dump_file (DFI_ssa, print_rtl_with_bb, insns);
- timevar_pop (TV_TO_SSA);
-
- /* Perform sparse conditional constant propagation, if requested. */
- if (flag_ssa_ccp)
- {
- timevar_push (TV_SSA_CCP);
- open_dump_file (DFI_ssa_ccp, decl);
-
- ssa_const_prop ();
-
- close_dump_file (DFI_ssa_ccp, print_rtl_with_bb, get_insns ());
- timevar_pop (TV_SSA_CCP);
- }
-
- /* It would be useful to cleanup the CFG at this point, but block
- merging and possibly other transformations might leave a PHI
- node in the middle of a basic block, which is a strict no-no. */
-
- /* The SSA implementation uses basic block numbers in its phi
- nodes. Thus, changing the control-flow graph or the basic
- blocks, e.g., calling find_basic_blocks () or cleanup_cfg (),
- may cause problems. */
-
- if (flag_ssa_dce)
- {
- /* Remove dead code. */
-
- timevar_push (TV_SSA_DCE);
- open_dump_file (DFI_ssa_dce, decl);
-
- insns = get_insns ();
- ssa_eliminate_dead_code();
-
- close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns);
- timevar_pop (TV_SSA_DCE);
- }
-
- /* Convert from SSA form. */
-
- timevar_push (TV_FROM_SSA);
- open_dump_file (DFI_ussa, decl);
-
- convert_from_ssa ();
- /* New registers have been created. Rescan their usage. */
- reg_scan (insns, max_reg_num (), 1);
-
- close_dump_file (DFI_ussa, print_rtl_with_bb, insns);
- timevar_pop (TV_FROM_SSA);
-
- ggc_collect ();
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- }
-
- timevar_push (TV_JUMP);
-
- if (optimize > 0)
- {
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
-
- /* ??? Run if-conversion before delete_null_pointer_checks,
- since the later does not preserve the CFG. This should
- be changed -- no since converting if's that are going to
- be deleted. */
- timevar_push (TV_IFCVT);
- if_convert (0);
- timevar_pop (TV_IFCVT);
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- /* Try to identify useless null pointer tests and delete them. */
- if (flag_delete_null_pointer_checks)
- delete_null_pointer_checks (insns);
- }
-
- /* Jump optimization, and the removal of NULL pointer checks, may
- have reduced the number of instructions substantially. CSE, and
- future passes, allocate arrays whose dimensions involve the
- maximum instruction UID, so if we can reduce the maximum UID
- we'll save big on memory. */
- renumber_insns (rtl_dump_file);
- timevar_pop (TV_JUMP);
-
- close_dump_file (DFI_jump, print_rtl, insns);
-
- ggc_collect ();
-
- /* Perform common subexpression elimination.
- Nonzero value from `cse_main' means that jumps were simplified
- and some code may now be unreachable, so do
- jump optimization again. */
-
- if (optimize > 0)
- {
- open_dump_file (DFI_cse, decl);
- timevar_push (TV_CSE);
-
- reg_scan (insns, max_reg_num (), 1);
-
- tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
-
- /* If we are not running more CSE passes, then we are no longer
- expecting CSE to be run. But always rerun it in a cheap mode. */
- cse_not_expected = !flag_rerun_cse_after_loop && !flag_gcse;
-
- if (tem || optimize > 1)
- {
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- timevar_pop (TV_JUMP);
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- }
-
- /* Run this after jump optmizations remove all the unreachable code
- so that unreachable code will not keep values live. */
- delete_trivially_dead_insns (insns, max_reg_num (), 0);
-
- /* Try to identify useless null pointer tests and delete them. */
- if (flag_delete_null_pointer_checks || flag_thread_jumps)
- {
- timevar_push (TV_JUMP);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
-
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
-
- if (flag_delete_null_pointer_checks)
- delete_null_pointer_checks (insns);
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- timevar_pop (TV_JUMP);
- }
-
- /* The second pass of jump optimization is likely to have
- removed a bunch more instructions. */
- renumber_insns (rtl_dump_file);
-
- timevar_pop (TV_CSE);
- close_dump_file (DFI_cse, print_rtl, insns);
- }
-
- open_dump_file (DFI_addressof, decl);
-
- purge_addressof (insns);
- reg_scan (insns, max_reg_num (), 1);
-
- close_dump_file (DFI_addressof, print_rtl, insns);
-
- ggc_collect ();
-
- /* Perform global cse. */
-
- if (optimize > 0 && flag_gcse)
- {
- int save_csb, save_cfj;
- int tem2 = 0;
-
- timevar_push (TV_GCSE);
- open_dump_file (DFI_gcse, decl);
-
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- tem = gcse_main (insns, rtl_dump_file);
- rebuild_jump_labels (insns);
-
- save_csb = flag_cse_skip_blocks;
- save_cfj = flag_cse_follow_jumps;
- flag_cse_skip_blocks = flag_cse_follow_jumps = 0;
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- /* If -fexpensive-optimizations, re-run CSE to clean up things done
- by gcse. */
- if (flag_expensive_optimizations)
- {
- timevar_push (TV_CSE);
- reg_scan (insns, max_reg_num (), 1);
- tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
- timevar_pop (TV_CSE);
- cse_not_expected = !flag_rerun_cse_after_loop;
- }
-
- /* If gcse or cse altered any jumps, rerun jump optimizations to clean
- things up. Then possibly re-run CSE again. */
- while (tem || tem2)
- {
- tem = tem2 = 0;
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- delete_trivially_dead_insns (insns, max_reg_num (), 0);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- timevar_pop (TV_JUMP);
-
- if (flag_expensive_optimizations)
- {
- timevar_push (TV_CSE);
- reg_scan (insns, max_reg_num (), 1);
- tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
- timevar_pop (TV_CSE);
- }
- }
-
- close_dump_file (DFI_gcse, print_rtl, insns);
- timevar_pop (TV_GCSE);
-
- ggc_collect ();
- flag_cse_skip_blocks = save_csb;
- flag_cse_follow_jumps = save_cfj;
- }
-
- /* Move constant computations out of loops. */
-
- if (optimize > 0)
- {
- timevar_push (TV_LOOP);
- open_dump_file (DFI_loop, decl);
- free_bb_for_insn ();
-
- if (flag_rerun_loop_opt)
- {
- cleanup_barriers ();
-
- /* We only want to perform unrolling once. */
- loop_optimize (insns, rtl_dump_file, LOOP_FIRST_PASS);
-
- /* The first call to loop_optimize makes some instructions
- trivially dead. We delete those instructions now in the
- hope that doing so will make the heuristics in loop work
- better and possibly speed up compilation. */
- delete_trivially_dead_insns (insns, max_reg_num (), 0);
-
- /* The regscan pass is currently necessary as the alias
- analysis code depends on this information. */
- reg_scan (insns, max_reg_num (), 1);
- }
- cleanup_barriers ();
- loop_optimize (insns, rtl_dump_file,
- (flag_unroll_loops ? LOOP_UNROLL : 0) | LOOP_BCT
- | (flag_prefetch_loop_arrays ? LOOP_PREFETCH : 0));
-
- close_dump_file (DFI_loop, print_rtl, insns);
- timevar_pop (TV_LOOP);
-
- ggc_collect ();
- }
-
- if (optimize > 0)
- {
- timevar_push (TV_CSE2);
- open_dump_file (DFI_cse2, decl);
-
- if (flag_rerun_cse_after_loop)
- {
- /* Running another jump optimization pass before the second
- cse pass sometimes simplifies the RTL enough to allow
- the second CSE pass to do a better job. Jump_optimize can change
- max_reg_num so we must rerun reg_scan afterwards.
- ??? Rework to not call reg_scan so often. */
- timevar_push (TV_JUMP);
-
- /* The previous call to loop_optimize makes some instructions
- trivially dead. We delete those instructions now in the
- hope that doing so will make the heuristics in jump work
- better and possibly speed up compilation. */
- delete_trivially_dead_insns (insns, max_reg_num (), 0);
-
- reg_scan (insns, max_reg_num (), 0);
-
- timevar_push (TV_IFCVT);
-
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- if_convert (0);
-
- timevar_pop(TV_IFCVT);
-
- timevar_pop (TV_JUMP);
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- reg_scan (insns, max_reg_num (), 0);
- tem = cse_main (insns, max_reg_num (), 1, rtl_dump_file);
-
- if (tem)
- {
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- timevar_pop (TV_JUMP);
- }
- }
-
- close_dump_file (DFI_cse2, print_rtl, insns);
- timevar_pop (TV_CSE2);
-
- ggc_collect ();
- }
-
- cse_not_expected = 1;
-
- regclass_init ();
-
- /* Do control and data flow analysis; wrote some of the results to
- the dump file. */
-
- timevar_push (TV_FLOW);
- open_dump_file (DFI_cfg, decl);
-
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0)
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
- check_function_return_warnings ();
-
- /* It may make more sense to mark constant functions after dead code is
- eliminated by life_analyzis, but we need to do it early, as -fprofile-arcs
- may insert code making function non-constant, but we still must consider
- it as constant, otherwise -fbranch-probabilities will not read data back.
-
- life_analyzis rarely eliminates modification of external memory.
- */
- mark_constant_function ();
-
- close_dump_file (DFI_cfg, print_rtl_with_bb, insns);
-
- if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
- {
- timevar_push (TV_BRANCH_PROB);
- open_dump_file (DFI_bp, decl);
-
- branch_prob ();
-
- close_dump_file (DFI_bp, print_rtl_with_bb, insns);
- timevar_pop (TV_BRANCH_PROB);
- }
-
- open_dump_file (DFI_life, decl);
- if (optimize)
- {
- struct loops loops;
-
- /* Discover and record the loop depth at the head of each basic
- block. The loop infrastructure does the real job for us. */
- flow_loops_find (&loops, LOOP_TREE);
-
- if (rtl_dump_file)
- flow_loops_dump (&loops, rtl_dump_file, NULL, 0);
-
- /* Estimate using heuristics if no profiling info is available. */
- if (flag_guess_branch_prob)
- estimate_probability (&loops);
-
- flow_loops_free (&loops);
- }
- life_analysis (insns, rtl_dump_file, PROP_FINAL);
- timevar_pop (TV_FLOW);
-
- no_new_pseudos = 1;
-
- if (warn_uninitialized || extra_warnings)
- {
- uninitialized_vars_warning (DECL_INITIAL (decl));
- if (extra_warnings)
- setjmp_args_warning ();
- }
-
- if (optimize)
- {
- if (initialize_uninitialized_subregs ())
- {
- /* Insns were inserted, so things might look a bit different. */
- insns = get_insns ();
- life_analysis (insns, rtl_dump_file,
- (PROP_LOG_LINKS | PROP_REG_INFO | PROP_DEATH_NOTES));
- }
- }
-
- close_dump_file (DFI_life, print_rtl_with_bb, insns);
-
- ggc_collect ();
-
- /* If -opt, try combining insns through substitution. */
-
- if (optimize > 0)
- {
- int rebuild_jump_labels_after_combine = 0;
-
- timevar_push (TV_COMBINE);
- open_dump_file (DFI_combine, decl);
-
- rebuild_jump_labels_after_combine
- = combine_instructions (insns, max_reg_num ());
-
- /* Always purge dead edges, as we may eliminate an insn throwing
- exception. */
- rebuild_jump_labels_after_combine |= purge_all_dead_edges (true);
-
- /* Combining insns may have turned an indirect jump into a
- direct jump. Rebuid the JUMP_LABEL fields of jumping
- instructions. */
- if (rebuild_jump_labels_after_combine)
- {
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- timevar_pop (TV_JUMP);
-
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
- }
-
- close_dump_file (DFI_combine, print_rtl_with_bb, insns);
- timevar_pop (TV_COMBINE);
-
- ggc_collect ();
- }
-
- /* Rerun if-conversion, as combine may have simplified things enough to
- now meet sequence length restrictions. */
- if (optimize > 0)
- {
- timevar_push (TV_IFCVT);
- open_dump_file (DFI_ce, decl);
-
- no_new_pseudos = 0;
- if_convert (1);
- no_new_pseudos = 1;
-
- close_dump_file (DFI_ce, print_rtl_with_bb, insns);
- timevar_pop (TV_IFCVT);
- }
-
- /* Register allocation pre-pass, to reduce number of moves
- necessary for two-address machines. */
- if (optimize > 0 && (flag_regmove || flag_expensive_optimizations))
- {
- timevar_push (TV_REGMOVE);
- open_dump_file (DFI_regmove, decl);
-
- regmove_optimize (insns, max_reg_num (), rtl_dump_file);
-
- close_dump_file (DFI_regmove, print_rtl_with_bb, insns);
- timevar_pop (TV_REGMOVE);
-
- ggc_collect ();
- }
-
- /* Do unconditional splitting before register allocation to allow machine
- description to add extra information not needed previously. */
- split_all_insns (1);
-
- /* Any of the several passes since flow1 will have munged register
- lifetime data a bit. */
- register_life_up_to_date = 0;
-
-#ifdef OPTIMIZE_MODE_SWITCHING
- timevar_push (TV_MODE_SWITCH);
-
- no_new_pseudos = 0;
- if (optimize_mode_switching (NULL))
- {
- /* We did work, and so had to regenerate global life information.
- Take advantage of this and don't re-recompute register life
- information below. */
- register_life_up_to_date = 1;
- }
- no_new_pseudos = 1;
-
- timevar_pop (TV_MODE_SWITCH);
-#endif
-
- timevar_push (TV_SCHED);
-
-#ifdef INSN_SCHEDULING
-
- /* Print function header into sched dump now
- because doing the sched analysis makes some of the dump. */
- if (optimize > 0 && flag_schedule_insns)
- {
- open_dump_file (DFI_sched, decl);
-
- /* Do control and data sched analysis,
- and write some of the results to dump file. */
-
- schedule_insns (rtl_dump_file);
-
- close_dump_file (DFI_sched, print_rtl_with_bb, insns);
-
- /* Register lifetime information was updated as part of verifying
- the schedule. */
- register_life_up_to_date = 1;
- }
-#endif
- timevar_pop (TV_SCHED);
-
- ggc_collect ();
-
- /* Determine if the current function is a leaf before running reload
- since this can impact optimizations done by the prologue and
- epilogue thus changing register elimination offsets. */
- current_function_is_leaf = leaf_function_p ();
-
- timevar_push (TV_LOCAL_ALLOC);
- open_dump_file (DFI_lreg, decl);
-
- /* Allocate pseudo-regs that are used only within 1 basic block.
-
- RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the
- jump optimizer after register allocation and reloading are finished. */
-
- if (! register_life_up_to_date)
- recompute_reg_usage (insns, ! optimize_size);
-
- /* Allocate the reg_renumber array. */
- allocate_reg_info (max_regno, FALSE, TRUE);
-
- /* And the reg_equiv_memory_loc array. */
- reg_equiv_memory_loc = (rtx *) xcalloc (max_regno, sizeof (rtx));
-
- allocate_initial_values (reg_equiv_memory_loc);
-
- regclass (insns, max_reg_num (), rtl_dump_file);
- rebuild_label_notes_after_reload = local_alloc ();
-
- timevar_pop (TV_LOCAL_ALLOC);
-
- if (dump_file[DFI_lreg].enabled)
- {
- timevar_push (TV_DUMP);
-
- dump_flow_info (rtl_dump_file);
- dump_local_alloc (rtl_dump_file);
-
- close_dump_file (DFI_lreg, print_rtl_with_bb, insns);
- timevar_pop (TV_DUMP);
- }
-
- ggc_collect ();
-
- timevar_push (TV_GLOBAL_ALLOC);
- open_dump_file (DFI_greg, decl);
-
- /* If optimizing, allocate remaining pseudo-regs. Do the reload
- pass fixing up any insns that are invalid. */
-
- if (optimize)
- failure = global_alloc (rtl_dump_file);
- else
- {
- build_insn_chain (insns);
- failure = reload (insns, 0);
- }
-
- timevar_pop (TV_GLOBAL_ALLOC);
-
- if (dump_file[DFI_greg].enabled)
- {
- timevar_push (TV_DUMP);
-
- dump_global_regs (rtl_dump_file);
-
- close_dump_file (DFI_greg, print_rtl_with_bb, insns);
- timevar_pop (TV_DUMP);
- }
-
- if (failure)
- goto exit_rest_of_compilation;
-
- ggc_collect ();
-
- open_dump_file (DFI_postreload, decl);
-
- /* Do a very simple CSE pass over just the hard registers. */
- if (optimize > 0)
- {
- timevar_push (TV_RELOAD_CSE_REGS);
- reload_cse_regs (insns);
- timevar_pop (TV_RELOAD_CSE_REGS);
- }
-
- /* Register allocation and reloading may have turned an indirect jump into
- a direct jump. If so, we must rebuild the JUMP_LABEL fields of
- jumping instructions. */
- if (rebuild_label_notes_after_reload)
- {
- timevar_push (TV_JUMP);
-
- rebuild_jump_labels (insns);
-
- timevar_pop (TV_JUMP);
- }
-
- close_dump_file (DFI_postreload, print_rtl_with_bb, insns);
-
- /* Re-create the death notes which were deleted during reload. */
- timevar_push (TV_FLOW2);
- open_dump_file (DFI_flow2, decl);
-
-#ifdef ENABLE_CHECKING
- verify_flow_info ();
-#endif
-
- /* If optimizing, then go ahead and split insns now. */
- if (optimize > 0)
- split_all_insns (0);
-
- cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0);
-
- /* On some machines, the prologue and epilogue code, or parts thereof,
- can be represented as RTL. Doing so lets us schedule insns between
- it and the rest of the code and also allows delayed branch
- scheduling to operate in the epilogue. */
- thread_prologue_and_epilogue_insns (insns);
-
- /* Cross-jumping is O(N^3) on the number of edges, thus trying to
- perform cross-jumping on flow graphs which have a high connectivity
- will take a long time. This is similar to the test to disable GCSE. */
- cleanup_crossjump = CLEANUP_CROSSJUMP;
- if (n_basic_blocks > 1000 && n_edges / n_basic_blocks >= 20)
- {
- if (optimize && warn_disabled_optimization)
- warning ("crossjump disabled: %d > 1000 basic blocks and %d >= 20 edges/basic block",
- n_basic_blocks, n_edges / n_basic_blocks);
- cleanup_crossjump = 0;
- }
-
- if (optimize)
- {
- cleanup_cfg (CLEANUP_EXPENSIVE | cleanup_crossjump);
- life_analysis (insns, rtl_dump_file, PROP_FINAL);
-
- /* This is kind of a heuristic. We need to run combine_stack_adjustments
- even for machines with possibly nonzero RETURN_POPS_ARGS
- and ACCUMULATE_OUTGOING_ARGS. We expect that only ports having
- push instructions will have popping returns. */
-#ifndef PUSH_ROUNDING
- if (!ACCUMULATE_OUTGOING_ARGS)
-#endif
- combine_stack_adjustments ();
-
- ggc_collect ();
- }
-
- flow2_completed = 1;
-
- close_dump_file (DFI_flow2, print_rtl_with_bb, insns);
- timevar_pop (TV_FLOW2);
-
-#ifdef HAVE_peephole2
- if (optimize > 0 && flag_peephole2)
- {
- timevar_push (TV_PEEPHOLE2);
- open_dump_file (DFI_peephole2, decl);
-
- peephole2_optimize (rtl_dump_file);
-
- close_dump_file (DFI_peephole2, print_rtl_with_bb, insns);
- timevar_pop (TV_PEEPHOLE2);
- }
-#endif
-
- if (optimize > 0 && (flag_rename_registers || flag_cprop_registers))
- {
- timevar_push (TV_RENAME_REGISTERS);
- open_dump_file (DFI_rnreg, decl);
-
- if (flag_rename_registers)
- regrename_optimize ();
- if (flag_cprop_registers)
- copyprop_hardreg_forward ();
-
- close_dump_file (DFI_rnreg, print_rtl_with_bb, insns);
- timevar_pop (TV_RENAME_REGISTERS);
- }
-
- if (optimize > 0)
- {
- timevar_push (TV_IFCVT2);
- open_dump_file (DFI_ce2, decl);
-
- if_convert (1);
-
- close_dump_file (DFI_ce2, print_rtl_with_bb, insns);
- timevar_pop (TV_IFCVT2);
- }
-#ifdef STACK_REGS
- if (optimize)
- split_all_insns (1);
-#endif
-
-#ifdef INSN_SCHEDULING
- if (optimize > 0 && flag_schedule_insns_after_reload)
- {
- timevar_push (TV_SCHED2);
- open_dump_file (DFI_sched2, decl);
-
- /* Do control and data sched analysis again,
- and write some more of the results to dump file. */
-
- split_all_insns (1);
-
- schedule_insns (rtl_dump_file);
-
- close_dump_file (DFI_sched2, print_rtl_with_bb, insns);
- timevar_pop (TV_SCHED2);
-
- ggc_collect ();
- }
-#endif
-
-#ifdef LEAF_REGISTERS
- current_function_uses_only_leaf_regs
- = optimize > 0 && only_leaf_regs_used () && leaf_function_p ();
-#endif
-
-#ifdef STACK_REGS
- timevar_push (TV_REG_STACK);
- open_dump_file (DFI_stack, decl);
-
- reg_to_stack (insns, rtl_dump_file);
-
- close_dump_file (DFI_stack, print_rtl_with_bb, insns);
- timevar_pop (TV_REG_STACK);
-
- ggc_collect ();
-#endif
- if (optimize > 0)
- {
- timevar_push (TV_REORDER_BLOCKS);
- open_dump_file (DFI_bbro, decl);
-
- /* Last attempt to optimize CFG, as life analysis possibly removed
- some instructions. Note that we can't rerun crossjump at this
- point, because it can turn a switch into a direct branch, which
- can leave the tablejump address calculation in the code, which
- can lead to referencing an undefined label. */
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK);
- if (flag_reorder_blocks)
- {
- reorder_basic_blocks ();
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK);
- }
-
- close_dump_file (DFI_bbro, print_rtl_with_bb, insns);
- timevar_pop (TV_REORDER_BLOCKS);
- }
- compute_alignments ();
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
-
- /* If a machine dependent reorganization is needed, call it. */
-#ifdef MACHINE_DEPENDENT_REORG
- timevar_push (TV_MACH_DEP);
- open_dump_file (DFI_mach, decl);
-
- MACHINE_DEPENDENT_REORG (insns);
-
- close_dump_file (DFI_mach, print_rtl, insns);
- timevar_pop (TV_MACH_DEP);
-
- ggc_collect ();
-#endif
-
- purge_line_number_notes (insns);
- cleanup_barriers ();
-
- /* If a scheduling pass for delayed branches is to be done,
- call the scheduling code. */
-
-#ifdef DELAY_SLOTS
- if (optimize > 0 && flag_delayed_branch)
- {
- timevar_push (TV_DBR_SCHED);
- open_dump_file (DFI_dbr, decl);
-
- dbr_schedule (insns, rtl_dump_file);
-
- close_dump_file (DFI_dbr, print_rtl, insns);
- timevar_pop (TV_DBR_SCHED);
-
- ggc_collect ();
- }
-#endif
-
-#if defined (HAVE_ATTR_length) && !defined (STACK_REGS)
- timevar_push (TV_SHORTEN_BRANCH);
- split_all_insns_noflow ();
- timevar_pop (TV_SHORTEN_BRANCH);
-#endif
-
- convert_to_eh_region_ranges ();
-
- /* Shorten branches. */
- timevar_push (TV_SHORTEN_BRANCH);
- shorten_branches (get_insns ());
- timevar_pop (TV_SHORTEN_BRANCH);
-
- current_function_nothrow = nothrow_function_p ();
- if (current_function_nothrow)
- /* Now we know that this can't throw; set the flag for the benefit
- of other functions later in this translation unit. */
- TREE_NOTHROW (current_function_decl) = 1;
-
- /* Now turn the rtl into assembler code. */
-
- timevar_push (TV_FINAL);
- {
- rtx x;
- const char *fnname;
-
- /* Get the function's name, as described by its RTL. This may be
- different from the DECL_NAME name used in the source file. */
-
- x = DECL_RTL (decl);
- if (GET_CODE (x) != MEM)
- abort ();
- x = XEXP (x, 0);
- if (GET_CODE (x) != SYMBOL_REF)
- abort ();
- fnname = XSTR (x, 0);
-
- assemble_start_function (decl, fnname);
- final_start_function (insns, asm_out_file, optimize);
- final (insns, asm_out_file, optimize, 0);
- final_end_function ();
-
-#ifdef IA64_UNWIND_INFO
- /* ??? The IA-64 ".handlerdata" directive must be issued before
- the ".endp" directive that closes the procedure descriptor. */
- output_function_exception_table ();
-#endif
-
- assemble_end_function (decl, fnname);
-
-#ifndef IA64_UNWIND_INFO
- /* Otherwise, it feels unclean to switch sections in the middle. */
- output_function_exception_table ();
-#endif
-
- if (! quiet_flag)
- fflush (asm_out_file);
-
- /* Release all memory allocated by flow. */
- free_basic_block_vars (0);
-
- /* Release all memory held by regsets now. */
- regset_release_memory ();
- }
- timevar_pop (TV_FINAL);
-
- ggc_collect ();
-
- /* Write DBX symbols if requested. */
-
- /* Note that for those inline functions where we don't initially
- know for certain that we will be generating an out-of-line copy,
- the first invocation of this routine (rest_of_compilation) will
- skip over this code by doing a `goto exit_rest_of_compilation;'.
- Later on, finish_compilation will call rest_of_compilation again
- for those inline functions that need to have out-of-line copies
- generated. During that call, we *will* be routed past here. */
-
- timevar_push (TV_SYMOUT);
- (*debug_hooks->function_decl) (decl);
- timevar_pop (TV_SYMOUT);
-
- exit_rest_of_compilation:
-
- /* In case the function was not output,
- don't leave any temporary anonymous types
- queued up for sdb output. */
-#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_types (NULL_TREE);
-#endif
-
- reload_completed = 0;
- flow2_completed = 0;
- no_new_pseudos = 0;
-
- timevar_push (TV_FINAL);
-
- /* Clear out the insn_length contents now that they are no
- longer valid. */
- init_insn_lengths ();
-
- /* Clear out the real_constant_chain before some of the rtx's
- it runs through become garbage. */
- clear_const_double_mem ();
-
- /* Show no temporary slots allocated. */
- init_temp_slots ();
-
- free_basic_block_vars (0);
- free_bb_for_insn ();
-
- timevar_pop (TV_FINAL);
-
- /* Make sure volatile mem refs aren't considered valid operands for
- arithmetic insns. We must call this here if this is a nested inline
- function, since the above code leaves us in the init_recog state
- (from final.c), and the function context push/pop code does not
- save/restore volatile_ok.
-
- ??? Maybe it isn't necessary for expand_start_function to call this
- anymore if we do it here? */
-
- init_recog_no_volatile ();
-
- /* We're done with this function. Free up memory if we can. */
- free_after_parsing (cfun);
- if (! DECL_DEFER_OUTPUT (decl))
- {
- free_after_compilation (cfun);
-
- /* Clear integrate.c's pointer to the cfun structure we just
- destroyed. */
- DECL_SAVED_INSNS (decl) = 0;
- }
- cfun = 0;
-
- ggc_collect ();
-
- timevar_pop (TV_REST_OF_COMPILATION);
-}
-\f
-static void
-display_help ()
-{
- int undoc;
- unsigned long i;
- const char *lang;
-
- printf (_(" -ffixed-<register> Mark <register> as being unavailable to the compiler\n"));
- printf (_(" -fcall-used-<register> Mark <register> as being corrupted by function calls\n"));
- printf (_(" -fcall-saved-<register> Mark <register> as being preserved across functions\n"));
- printf (_(" -finline-limit=<number> Limits the size of inlined functions to <number>\n"));
- printf (_(" -fmessage-length=<number> Limits diagnostics messages lengths to <number> characters per line. 0 suppresses line-wrapping\n"));
- printf (_(" -fdiagnostics-show-location=[once | every-line] Indicates how often source location information should be emitted, as prefix, at the beginning of diagnostics when line-wrapping\n"));
-
- for (i = ARRAY_SIZE (f_options); i--;)
- {
- const char *description = f_options[i].description;
-
- if (description != NULL && * description != 0)
- printf (" -f%-21s %s\n",
- f_options[i].string, _(description));
- }
-
- printf (_(" -O[number] Set optimization level to [number]\n"));
- printf (_(" -Os Optimize for space rather than speed\n"));
- for (i = LAST_PARAM; i--;)
- {
- const char *description = compiler_params[i].help;
- const int length = 21-strlen(compiler_params[i].option);
-
- if (description != NULL && * description != 0)
- printf (" --param %s=<value>%.*s%s\n",
- compiler_params[i].option,
- length > 0 ? length : 1, " ",
- _(description));
- }
- printf (_(" -pedantic Issue warnings needed by strict compliance to ISO C\n"));
- printf (_(" -pedantic-errors Like -pedantic except that errors are produced\n"));
- printf (_(" -w Suppress warnings\n"));
- printf (_(" -W Enable extra warnings\n"));
-
- for (i = ARRAY_SIZE (W_options); i--;)
- {
- const char *description = W_options[i].description;
-
- if (description != NULL && * description != 0)
- printf (" -W%-21s %s\n",
- W_options[i].string, _(description));
- }
-
- printf (_(" -Wunused Enable unused warnings\n"));
- printf (_(" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n"));
- printf (_(" -p Enable function profiling\n"));
- printf (_(" -o <file> Place output into <file> \n"));
- printf (_("\
- -G <number> Put global and static data smaller than <number>\n\
- bytes into a special section (on some targets)\n"));
-
- for (i = ARRAY_SIZE (debug_args); i--;)
- {
- if (debug_args[i].description != NULL)
- printf (" -g%-21s %s\n",
- debug_args[i].arg, _(debug_args[i].description));
- }
-
- printf (_(" -aux-info <file> Emit declaration info into <file>\n"));
- printf (_(" -quiet Do not display functions compiled or elapsed time\n"));
- printf (_(" -version Display the compiler's version\n"));
- printf (_(" -d[letters] Enable dumps from specific passes of the compiler\n"));
- printf (_(" -dumpbase <file> Base name to be used for dumps from specific passes\n"));
-#if defined INSN_SCHEDULING
- printf (_(" -fsched-verbose=<number> Set the verbosity level of the scheduler\n"));
-#endif
- printf (_(" --help Display this information\n"));
-
- undoc = 0;
- lang = "language";
-
- /* Display descriptions of language specific options.
- If there is no description, note that there is an undocumented option.
- If the description is empty, do not display anything. (This allows
- options to be deliberately undocumented, for whatever reason).
- If the option string is missing, then this is a marker, indicating
- that the description string is in fact the name of a language, whose
- language specific options are to follow. */
-
- if (ARRAY_SIZE (documented_lang_options) > 1)
- {
- printf (_("\nLanguage specific options:\n"));
-
- for (i = 0; i < ARRAY_SIZE (documented_lang_options); i++)
- {
- const char *description = documented_lang_options[i].description;
- const char *option = documented_lang_options[i].option;
-
- if (description == NULL)
- {
- undoc = 1;
-
- if (extra_warnings)
- printf (_(" %-23.23s [undocumented]\n"), option);
- }
- else if (*description == 0)
- continue;
- else if (option == NULL)
- {
- if (undoc)
- printf
- (_("\nThere are undocumented %s specific options as well.\n"),
- lang);
- undoc = 0;
-
- printf (_("\n Options for %s:\n"), description);
-
- lang = description;
- }
- else
- printf (" %-23.23s %s\n", option, _(description));
- }
- }
-
- if (undoc)
- printf (_("\nThere are undocumented %s specific options as well.\n"),
- lang);
-
- display_target_options ();
-}
-
-static void
-display_target_options ()
-{
- int undoc, i;
- static bool displayed = false;
-
- /* Avoid double printing for --help --target-help. */
- if (displayed)
- return;
- displayed = true;
-
- if (ARRAY_SIZE (target_switches) > 1
-#ifdef TARGET_OPTIONS
- || ARRAY_SIZE (target_options) > 1
-#endif
- )
- {
- int doc = 0;
-
- undoc = 0;
-
- printf (_("\nTarget specific options:\n"));
-
- for (i = ARRAY_SIZE (target_switches); i--;)
- {
- const char *option = target_switches[i].name;
- const char *description = target_switches[i].description;
-
- if (option == NULL || *option == 0)
- continue;
- else if (description == NULL)
- {
- undoc = 1;
-
- if (extra_warnings)
- printf (_(" -m%-23.23s [undocumented]\n"), option);
- }
- else if (* description != 0)
- doc += printf (" -m%-23.23s %s\n", option, _(description));
- }
-
-#ifdef TARGET_OPTIONS
- for (i = ARRAY_SIZE (target_options); i--;)
- {
- const char *option = target_options[i].prefix;
- const char *description = target_options[i].description;
-
- if (option == NULL || *option == 0)
- continue;
- else if (description == NULL)
- {
- undoc = 1;
-
- if (extra_warnings)
- printf (_(" -m%-23.23s [undocumented]\n"), option);
- }
- else if (* description != 0)
- doc += printf (" -m%-23.23s %s\n", option, _(description));
- }
-#endif
- if (undoc)
- {
- if (doc)
- printf (_("\nThere are undocumented target specific options as well.\n"));
- else
- printf (_(" They exist, but they are not documented.\n"));
- }
- }
-}
-\f
-/* Parse a -d... command line switch. */
-
-static void
-decode_d_option (arg)
- const char *arg;
-{
- int i, c, matched;
+ int c;
while (*arg)
switch (c = *arg++)
{
- case 'a':
- for (i = 0; i < (int) DFI_MAX; ++i)
- dump_file[i].enabled = 1;
- break;
case 'A':
flag_debug_asm = 1;
break;
flag_print_asm_name = 1;
break;
case 'P':
- flag_dump_rtl_in_asm = 1;
- flag_print_asm_name = 1;
- break;
+ flag_dump_rtl_in_asm = 1;
+ flag_print_asm_name = 1;
+ break;
case 'v':
graph_dump_format = vcg;
break;
rtl_dump_and_exit = 1;
break;
case 'y':
- (*lang_hooks.set_yydebug) (1);
+ set_yydebug = 1;
break;
case 'D': /* These are handled by the preprocessor. */
case 'I':
+ case 'M':
+ case 'N':
+ case 'U':
+ break;
+ case 'H':
+ setup_core_dumping();
+ break;
+ case 'a':
+ enable_rtl_dump_file ();
break;
default:
- matched = 0;
- for (i = 0; i < (int) DFI_MAX; ++i)
- if (c == dump_file[i].debug_switch)
- {
- dump_file[i].enabled = 1;
- matched = 1;
- }
-
- if (! matched)
- warning ("unrecognized gcc debugging option: %c", c);
+ warning (0, "unrecognized gcc debugging option: %c", c);
break;
}
}
-/* Parse a -f... command line switch. ARG is the value after the -f.
- It is safe to access 'ARG - 2' to generate the full switch name.
- Return the number of strings consumed. */
-
-static int
-decode_f_option (arg)
- const char *arg;
+/* Indexed by enum debug_info_type. */
+const char *const debug_type_names[] =
{
- int j;
- const char *option_value = NULL;
-
- /* Search for the option in the table of binary f options. */
- for (j = ARRAY_SIZE (f_options); j--;)
- {
- if (!strcmp (arg, f_options[j].string))
- {
- *f_options[j].variable = f_options[j].on_value;
- return 1;
- }
+ "none", "stabs", "coff", "dwarf-2", "xcoff", "vms"
+};
- if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-'
- && ! strcmp (arg + 3, f_options[j].string))
- {
- *f_options[j].variable = ! f_options[j].on_value;
- return 1;
- }
- }
+/* Print version information to FILE.
+ Each line begins with INDENT (for the case where FILE is the
+ assembler output file). */
- if (!strcmp (arg, "fast-math"))
- set_fast_math_flags ();
- else if (!strcmp (arg, "no-fast-math"))
- set_no_fast_math_flags ();
- else if ((option_value = skip_leading_substring (arg, "inline-limit-"))
- || (option_value = skip_leading_substring (arg, "inline-limit=")))
- {
- int val =
- read_integral_parameter (option_value, arg - 2,
- MAX_INLINE_INSNS);
- set_param_value ("max-inline-insns", val);
- }
-#ifdef INSN_SCHEDULING
- else if ((option_value = skip_leading_substring (arg, "sched-verbose=")))
- fix_sched_param ("verbose", option_value);
+void
+print_version (FILE *file, const char *indent)
+{
+ static const char fmt1[] =
+#ifdef __GNUC__
+ N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ")
+#else
+ N_("%s%s%s %sversion %s (%s) compiled by CC, ")
#endif
- else if ((option_value = skip_leading_substring (arg, "fixed-")))
- fix_register (option_value, 1, 1);
- else if ((option_value = skip_leading_substring (arg, "call-used-")))
- fix_register (option_value, 0, 1);
- else if ((option_value = skip_leading_substring (arg, "call-saved-")))
- fix_register (option_value, 0, 0);
- else if ((option_value = skip_leading_substring (arg, "align-loops=")))
- align_loops = read_integral_parameter (option_value, arg - 2, align_loops);
- else if ((option_value = skip_leading_substring (arg, "align-functions=")))
- align_functions
- = read_integral_parameter (option_value, arg - 2, align_functions);
- else if ((option_value = skip_leading_substring (arg, "align-jumps=")))
- align_jumps = read_integral_parameter (option_value, arg - 2, align_jumps);
- else if ((option_value = skip_leading_substring (arg, "align-labels=")))
- align_labels
- = read_integral_parameter (option_value, arg - 2, align_labels);
- else if ((option_value
- = skip_leading_substring (arg, "stack-limit-register=")))
- {
- int reg = decode_reg_name (option_value);
- if (reg < 0)
- error ("unrecognized register name `%s'", option_value);
- else
- stack_limit_rtx = gen_rtx_REG (Pmode, reg);
- }
- else if ((option_value
- = skip_leading_substring (arg, "stack-limit-symbol=")))
- {
- const char *nm;
- nm = ggc_strdup (option_value);
- stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, nm);
- }
- else if ((option_value
- = skip_leading_substring (arg, "message-length=")))
- output_set_maximum_length
- (&global_dc->buffer, read_integral_parameter
- (option_value, arg - 2, diagnostic_line_cutoff (global_dc)));
- else if ((option_value
- = skip_leading_substring (arg, "diagnostics-show-location=")))
- {
- if (!strcmp (option_value, "once"))
- diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE;
- else if (!strcmp (option_value, "every-line"))
- diagnostic_prefixing_rule (global_dc)
- = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE;
- else
- error ("unrecognized option `%s'", arg - 2);
- }
- else if (!strcmp (arg, "no-stack-limit"))
- stack_limit_rtx = NULL_RTX;
- else if (!strcmp (arg, "preprocessed"))
- /* Recognise this switch but do nothing. This prevents warnings
- about an unrecognized switch if cpplib has not been linked in. */
;
- else
- return 0;
+ static const char fmt2[] =
+ N_("GMP version %s, MPFR version %s.\n");
+ static const char fmt3[] =
+ N_("%s%swarning: %s header version %s differs from library version %s.\n");
+ static const char fmt4[] =
+ N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n");
+#ifndef __VERSION__
+#define __VERSION__ "[?]"
+#endif
+ fprintf (file,
+ file == stderr ? _(fmt1) : fmt1,
+ indent, *indent != 0 ? " " : "",
+ lang_hooks.name, pkgversion_string, version_string, TARGET_NAME,
+ indent, __VERSION__);
- return 1;
+ /* We need to stringify the GMP macro values. Ugh, gmp_version has
+ two string formats, "i.j.k" and "i.j" when k is zero. As of
+ gmp-4.3.0, GMP always uses the 3 number format. */
+#define GCC_GMP_STRINGIFY_VERSION3(X) #X
+#define GCC_GMP_STRINGIFY_VERSION2(X) GCC_GMP_STRINGIFY_VERSION3(X)
+#define GCC_GMP_VERSION_NUM(X,Y,Z) (((X) << 16L) | ((Y) << 8) | (Z))
+#define GCC_GMP_VERSION \
+ GCC_GMP_VERSION_NUM(__GNU_MP_VERSION, __GNU_MP_VERSION_MINOR, __GNU_MP_VERSION_PATCHLEVEL)
+#if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,0) && __GNU_MP_VERSION_PATCHLEVEL == 0
+#define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \
+ GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR)
+#else
+#define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \
+ GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) "." \
+ GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_PATCHLEVEL)
+#endif
+ fprintf (file,
+ file == stderr ? _(fmt2) : fmt2,
+ GCC_GMP_STRINGIFY_VERSION, MPFR_VERSION_STRING);
+ if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version))
+ fprintf (file,
+ file == stderr ? _(fmt3) : fmt3,
+ indent, *indent != 0 ? " " : "",
+ "GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version);
+ if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ()))
+ fprintf (file,
+ file == stderr ? _(fmt3) : fmt3,
+ indent, *indent != 0 ? " " : "",
+ "MPFR", MPFR_VERSION_STRING, mpfr_get_version ());
+ fprintf (file,
+ file == stderr ? _(fmt4) : fmt4,
+ indent, *indent != 0 ? " " : "",
+ PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE));
}
-/* Parse a -W... command line switch. ARG is the value after the -W.
- It is safe to access 'ARG - 2' to generate the full switch name.
- Return the number of strings consumed. */
-
+#ifdef ASM_COMMENT_START
static int
-decode_W_option (arg)
- const char *arg;
+print_to_asm_out_file (print_switch_type type, const char * text)
{
- const char *option_value = NULL;
- int j;
+ bool prepend_sep = true;
- /* Search for the option in the table of binary W options. */
-
- for (j = ARRAY_SIZE (W_options); j--;)
+ switch (type)
{
- if (!strcmp (arg, W_options[j].string))
- {
- *W_options[j].variable = W_options[j].on_value;
- return 1;
- }
-
- if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-'
- && ! strcmp (arg + 3, W_options[j].string))
- {
- *W_options[j].variable = ! W_options[j].on_value;
- return 1;
- }
- }
+ case SWITCH_TYPE_LINE_END:
+ putc ('\n', asm_out_file);
+ return 1;
- if ((option_value = skip_leading_substring (arg, "id-clash-")))
- warning ("-Wid-clash-LEN is no longer supported");
- else if ((option_value = skip_leading_substring (arg, "larger-than-")))
- {
- larger_than_size = read_integral_parameter (option_value, arg - 2, -1);
+ case SWITCH_TYPE_LINE_START:
+ fputs (ASM_COMMENT_START, asm_out_file);
+ return strlen (ASM_COMMENT_START);
+
+ case SWITCH_TYPE_DESCRIPTIVE:
+ if (ASM_COMMENT_START[0] == 0)
+ prepend_sep = false;
+ /* Drop through. */
+ case SWITCH_TYPE_PASSED:
+ case SWITCH_TYPE_ENABLED:
+ if (prepend_sep)
+ fputc (' ', asm_out_file);
+ fprintf (asm_out_file, text);
+ /* No need to return the length here as
+ print_single_switch has already done it. */
+ return 0;
- warn_larger_than = larger_than_size != -1;
- }
- else if (!strcmp (arg, "unused"))
- {
- set_Wunused (1);
- }
- else if (!strcmp (arg, "no-unused"))
- {
- set_Wunused (0);
+ default:
+ return -1;
}
- else
- return 0;
-
- return 1;
}
-
-/* Parse a -g... command line switch. ARG is the value after the -g.
- It is safe to access 'ARG - 2' to generate the full switch name.
- Return the number of strings consumed. */
+#endif
static int
-decode_g_option (arg)
- const char *arg;
+print_to_stderr (print_switch_type type, const char * text)
{
- static unsigned level=0;
- /* A lot of code assumes write_symbols == NO_DEBUG if the
- debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
- of what debugging type has been selected). This records the
- selected type. It is an error to specify more than one
- debugging type. */
- static enum debug_info_type selected_debug_type = NO_DEBUG;
- /* Non-zero if debugging format has been explicitly set.
- -g and -ggdb don't explicitly set the debugging format so
- -gdwarf -g3 is equivalent to -gdwarf3. */
- static int type_explicitly_set_p = 0;
- /* Indexed by enum debug_info_type. */
- static const char *const debug_type_names[] =
- {
- "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff", "vms"
- };
-
- /* The maximum admissible debug level value. */
- static const unsigned max_debug_level = 3;
-
- /* Look up ARG in the table. */
- for (da = debug_args; da->arg; da++)
+ switch (type)
{
- const int da_len = strlen (da->arg);
-
- if (da_len == 0 || ! strncmp (arg, da->arg, da_len))
- {
- enum debug_info_type type = da->debug_type;
- const char *p = arg + da_len;
-
- if (*p && ! ISDIGIT (*p))
- continue;
-
- /* A debug flag without a level defaults to level 2.
- Note we do not want to call read_integral_parameter
- for that case since it will call atoi which
- will return zero.
-
- ??? We may want to generalize the interface to
- read_integral_parameter to better handle this case
- if this case shows up often. */
- if (*p)
- level = read_integral_parameter (p, 0, max_debug_level + 1);
- else
- level = (level == 0) ? 2 : level;
-
- if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len))
- {
- error ("use -gdwarf -g%d for DWARF v1, level %d",
- level, level);
- if (level == 2)
- error ("use -gdwarf-2 for DWARF v2");
- }
-
- if (level > max_debug_level)
- {
- warning ("\
-ignoring option `%s' due to invalid debug level specification",
- arg - 2);
- level = debug_info_level;
- }
-
- if (type == NO_DEBUG)
- {
- type = PREFERRED_DEBUGGING_TYPE;
-
- if (da_len > 1 && strncmp (arg, "gdb", da_len) == 0)
- {
-#ifdef DWARF2_DEBUGGING_INFO
- type = DWARF2_DEBUG;
-#else
-#ifdef DBX_DEBUGGING_INFO
- type = DBX_DEBUG;
-#endif
-#endif
- }
- }
-
- if (type == NO_DEBUG)
- warning ("`%s': unknown or unsupported -g option", arg - 2);
+ case SWITCH_TYPE_LINE_END:
+ putc ('\n', stderr);
+ return 1;
- /* Does it conflict with an already selected type? */
- if (type_explicitly_set_p
- /* -g/-ggdb don't conflict with anything. */
- && da->debug_type != NO_DEBUG
- && type != selected_debug_type)
- warning ("`%s' ignored, conflicts with `-g%s'",
- arg - 2, debug_type_names[(int) selected_debug_type]);
- else
- {
- /* If the format has already been set, -g/-ggdb
- only change the debug level. */
- if (type_explicitly_set_p && da->debug_type == NO_DEBUG)
- /* Don't change debugging type. */
- ;
- else
- {
- selected_debug_type = type;
- type_explicitly_set_p = da->debug_type != NO_DEBUG;
- }
-
- write_symbols = (level == 0
- ? NO_DEBUG
- : selected_debug_type);
- use_gnu_debug_info_extensions = da->use_extensions_p;
- debug_info_level = (enum debug_info_level) level;
- }
+ case SWITCH_TYPE_LINE_START:
+ return 0;
+
+ case SWITCH_TYPE_PASSED:
+ case SWITCH_TYPE_ENABLED:
+ fputc (' ', stderr);
+ /* Drop through. */
+
+ case SWITCH_TYPE_DESCRIPTIVE:
+ fprintf (stderr, text);
+ /* No need to return the length here as
+ print_single_switch has already done it. */
+ return 0;
- break;
- }
+ default:
+ return -1;
}
-
- if (! da->arg)
- return 0;
-
- return 1;
}
-/* Decode the first argument in the argv as a language-independent option.
- Return the number of strings consumed. */
+/* Print an option value and return the adjusted position in the line.
+ ??? print_fn doesn't handle errors, eg disk full; presumably other
+ code will catch a disk full though. */
-static unsigned int
-independent_decode_option (argc, argv)
- int argc;
- char **argv;
+static int
+print_single_switch (print_switch_fn_type print_fn,
+ int pos,
+ print_switch_type type,
+ const char * text)
{
- char *arg = argv[0];
+ /* The ultrix fprintf returns 0 on success, so compute the result
+ we want here since we need it for the following test. The +1
+ is for the separator character that will probably be emitted. */
+ int len = strlen (text) + 1;
- if (arg[0] != '-' || arg[1] == 0)
+ if (pos != 0
+ && pos + len > MAX_LINE)
{
- if (arg[0] == '+')
- return 0;
+ print_fn (SWITCH_TYPE_LINE_END, NULL);
+ pos = 0;
+ }
- filename = arg;
+ if (pos == 0)
+ pos += print_fn (SWITCH_TYPE_LINE_START, NULL);
- return 1;
- }
+ print_fn (type, text);
+ return pos + len;
+}
- arg++;
+/* Print active target switches using PRINT_FN.
+ POS is the current cursor position and MAX is the size of a "line".
+ Each line begins with INDENT and ends with TERM.
+ Each switch is separated from the next by SEP. */
- if (!strcmp (arg, "-help"))
- {
- display_help ();
- exit_after_options = 1;
- }
+static void
+print_switch_values (print_switch_fn_type print_fn)
+{
+ int pos = 0;
+ size_t j;
+ const char **p;
- if (!strcmp (arg, "-target-help"))
- {
- display_target_options ();
- exit_after_options = 1;
- }
+ /* Fill in the -frandom-seed option, if the user didn't pass it, so
+ that it can be printed below. This helps reproducibility. */
+ if (!flag_random_seed)
+ init_random_seed ();
- if (!strcmp (arg, "-version"))
- {
- print_version (stderr, "");
- exit_after_options = 1;
- }
+ /* Print the options as passed. */
+ pos = print_single_switch (print_fn, pos,
+ SWITCH_TYPE_DESCRIPTIVE, _("options passed: "));
- /* Handle '--param <name>=<value>'. */
- if (strcmp (arg, "-param") == 0)
+ for (p = &save_argv[1]; *p != NULL; p++)
{
- char *equal;
-
- if (argc == 1)
+ if (**p == '-')
{
- error ("-param option missing argument");
- return 1;
- }
+ /* Ignore these. */
+ if (strcmp (*p, "-o") == 0
+ || strcmp (*p, "-dumpbase") == 0
+ || strcmp (*p, "-auxbase") == 0)
+ {
+ if (p[1] != NULL)
+ p++;
+ continue;
+ }
- /* Get the '<name>=<value>' parameter. */
- arg = argv[1];
- /* Look for the `='. */
- equal = strchr (arg, '=');
- if (!equal)
- error ("invalid --param option: %s", arg);
- else
- {
- int val;
-
- /* Zero out the `=' sign so that we get two separate strings. */
- *equal = '\0';
- /* Figure out what value is specified. */
- val = read_integral_parameter (equal + 1, NULL, INVALID_PARAM_VAL);
- if (val != INVALID_PARAM_VAL)
- set_param_value (arg, val);
- else
- error ("invalid parameter value `%s'", equal + 1);
+ if (strcmp (*p, "-quiet") == 0
+ || strcmp (*p, "-version") == 0)
+ continue;
+
+ if ((*p)[1] == 'd')
+ continue;
}
- return 2;
+ pos = print_single_switch (print_fn, pos, SWITCH_TYPE_PASSED, *p);
}
- if (*arg == 'Y')
- arg++;
-
- switch (*arg)
- {
- default:
- return 0;
-
- case 'O':
- /* Already been treated in main (). Do nothing. */
- break;
+ if (pos > 0)
+ print_fn (SWITCH_TYPE_LINE_END, NULL);
- case 'm':
- set_target_switch (arg + 1);
- break;
+ /* Print the -f and -m options that have been enabled.
+ We don't handle language specific options but printing argv
+ should suffice. */
+ pos = print_single_switch (print_fn, 0,
+ SWITCH_TYPE_DESCRIPTIVE, _("options enabled: "));
- case 'f':
- return decode_f_option (arg + 1);
+ for (j = 0; j < cl_options_count; j++)
+ if ((cl_options[j].flags & CL_REPORT)
+ && option_enabled (j) > 0)
+ pos = print_single_switch (print_fn, pos,
+ SWITCH_TYPE_ENABLED, cl_options[j].opt_text);
- case 'g':
- return decode_g_option (arg + 1);
+ print_fn (SWITCH_TYPE_LINE_END, NULL);
+}
- case 'd':
- if (!strcmp (arg, "dumpbase"))
+/* Open assembly code output file. Do this even if -fsyntax-only is
+ on, because then the driver will have provided the name of a
+ temporary file or bit bucket for us. NAME is the file specified on
+ the command line, possibly NULL. */
+static void
+init_asm_output (const char *name)
+{
+ if (name == NULL && asm_file_name == 0)
+ asm_out_file = stdout;
+ else
+ {
+ if (asm_file_name == 0)
{
- if (argc == 1)
- return 0;
+ int len = strlen (dump_base_name);
+ char *dumpname = XNEWVEC (char, len + 6);
- dump_base_name = argv[1];
- return 2;
+ memcpy (dumpname, dump_base_name, len + 1);
+ strip_off_ending (dumpname, len);
+ strcat (dumpname, ".s");
+ asm_file_name = dumpname;
}
+ if (!strcmp (asm_file_name, "-"))
+ asm_out_file = stdout;
else
- decode_d_option (arg + 1);
- break;
-
- case 'p':
- if (!strcmp (arg, "pedantic"))
- pedantic = 1;
- else if (!strcmp (arg, "pedantic-errors"))
- flag_pedantic_errors = pedantic = 1;
- else if (arg[1] == 0)
- profile_flag = 1;
- else
- return 0;
- break;
-
- case 'q':
- if (!strcmp (arg, "quiet"))
- quiet_flag = 1;
- else
- return 0;
- break;
-
- case 'v':
- if (!strcmp (arg, "version"))
- version_flag = 1;
- else
- return 0;
- break;
-
- case 'w':
- if (arg[1] == 0)
- inhibit_warnings = 1;
- else
- return 0;
- break;
+ asm_out_file = fopen (asm_file_name, "w+b");
+ if (asm_out_file == 0)
+ fatal_error ("can%'t open %s for writing: %m", asm_file_name);
+ }
- case 'W':
- if (arg[1] == 0)
- {
- extra_warnings = 1;
- /* We save the value of warn_uninitialized, since if they put
- -Wuninitialized on the command line, we need to generate a
- warning about not using it without also specifying -O. */
- if (warn_uninitialized != 1)
- warn_uninitialized = 2;
- }
- else
- return decode_W_option (arg + 1);
- break;
+ if (!flag_syntax_only)
+ {
+ targetm.asm_out.file_start ();
- case 'a':
- if (!strncmp (arg, "aux-info", 8))
+ if (flag_record_gcc_switches)
{
- if (arg[8] == '\0')
+ if (targetm.asm_out.record_gcc_switches)
{
- if (argc == 1)
- return 0;
-
- aux_info_file_name = argv[1];
- flag_gen_aux_info = 1;
- return 2;
- }
- else if (arg[8] == '=')
- {
- aux_info_file_name = arg + 9;
- flag_gen_aux_info = 1;
+ /* Let the target know that we are about to start recording. */
+ targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE,
+ NULL);
+ /* Now record the switches. */
+ print_switch_values (targetm.asm_out.record_gcc_switches);
+ /* Let the target know that the recording is over. */
+ targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE,
+ NULL);
}
else
- return 0;
+ inform (input_location, "-frecord-gcc-switches is not supported by the current target");
}
- else
- return 0;
- break;
- case 'o':
- if (arg[1] == 0)
+#ifdef ASM_COMMENT_START
+ if (flag_verbose_asm)
{
- if (argc == 1)
- return 0;
-
- asm_file_name = argv[1];
- return 2;
+ /* Print the list of switches in effect
+ into the assembler file as comments. */
+ print_version (asm_out_file, ASM_COMMENT_START);
+ print_switch_values (print_to_asm_out_file);
+ fprintf (asm_out_file, "\n");
}
- return 0;
-
- case 'G':
- {
- int g_switch_val;
- int return_val;
-
- if (arg[1] == 0)
- {
- if (argc == 1)
- return 0;
-
- g_switch_val = read_integral_parameter (argv[1], 0, -1);
- return_val = 2;
- }
- else
- {
- g_switch_val = read_integral_parameter (arg + 1, 0, -1);
- return_val = 1;
- }
-
- if (g_switch_val == -1)
- return_val = 0;
- else
- {
- g_switch_set = TRUE;
- g_switch_value = g_switch_val;
- }
-
- return return_val;
- }
+#endif
}
-
- return 1;
}
-\f
-/* Decode -m switches. */
-/* Decode the switch -mNAME. */
-
-static void
-set_target_switch (name)
- const char *name;
-{
- size_t j;
- int valid_target_option = 0;
-
- for (j = 0; j < ARRAY_SIZE (target_switches); j++)
- if (!strcmp (target_switches[j].name, name))
- {
- if (target_switches[j].value < 0)
- target_flags &= ~-target_switches[j].value;
- else
- target_flags |= target_switches[j].value;
- valid_target_option = 1;
- }
-
-#ifdef TARGET_OPTIONS
- if (!valid_target_option)
- for (j = 0; j < ARRAY_SIZE (target_options); j++)
- {
- int len = strlen (target_options[j].prefix);
- if (!strncmp (target_options[j].prefix, name, len))
- {
- *target_options[j].variable = name + len;
- valid_target_option = 1;
- }
- }
-#endif
- if (!valid_target_option)
- error ("invalid option `%s'", name);
-}
-\f
-/* Print version information to FILE.
- Each line begins with INDENT (for the case where FILE is the
- assembler output file). */
+/* Return true if the state of option OPTION should be stored in PCH files
+ and checked by default_pch_valid_p. Store the option's current state
+ in STATE if so. */
-static void
-print_version (file, indent)
- FILE *file;
- const char *indent;
+static inline bool
+option_affects_pch_p (int option, struct cl_option_state *state)
{
-#ifndef __VERSION__
-#define __VERSION__ "[?]"
-#endif
- fnotice (file,
-#ifdef __GNUC__
- "%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s.\n"
-#else
- "%s%s%s version %s (%s) compiled by CC.\n"
-#endif
- , indent, *indent != 0 ? " " : "",
- lang_hooks.name, version_string, TARGET_NAME,
- indent, __VERSION__);
+ if ((cl_options[option].flags & CL_TARGET) == 0)
+ return false;
+ if (cl_options[option].flag_var == &target_flags)
+ if (targetm.check_pch_target_flags)
+ return false;
+ return get_option_state (option, state);
}
-/* Print an option value and return the adjusted position in the line.
- ??? We don't handle error returns from fprintf (disk full); presumably
- other code will catch a disk full though. */
+/* Default version of get_pch_validity.
+ By default, every flag difference is fatal; that will be mostly right for
+ most targets, but completely right for very few. */
-static int
-print_single_switch (file, pos, max, indent, sep, term, type, name)
- FILE *file;
- int pos, max;
- const char *indent, *sep, *term, *type, *name;
+void *
+default_get_pch_validity (size_t *len)
{
- /* The ultrix fprintf returns 0 on success, so compute the result we want
- here since we need it for the following test. */
- int len = strlen (sep) + strlen (type) + strlen (name);
+ struct cl_option_state state;
+ size_t i;
+ char *result, *r;
- if (pos != 0
- && pos + len > max)
- {
- fprintf (file, "%s", term);
- pos = 0;
- }
- if (pos == 0)
+ *len = 2;
+ if (targetm.check_pch_target_flags)
+ *len += sizeof (target_flags);
+ for (i = 0; i < cl_options_count; i++)
+ if (option_affects_pch_p (i, &state))
+ *len += state.size;
+
+ result = r = XNEWVEC (char, *len);
+ r[0] = flag_pic;
+ r[1] = flag_pie;
+ r += 2;
+ if (targetm.check_pch_target_flags)
{
- fprintf (file, "%s", indent);
- pos = strlen (indent);
+ memcpy (r, &target_flags, sizeof (target_flags));
+ r += sizeof (target_flags);
}
- fprintf (file, "%s%s%s", sep, type, name);
- pos += len;
- return pos;
-}
-/* Print active target switches to FILE.
- POS is the current cursor position and MAX is the size of a "line".
- Each line begins with INDENT and ends with TERM.
- Each switch is separated from the next by SEP. */
+ for (i = 0; i < cl_options_count; i++)
+ if (option_affects_pch_p (i, &state))
+ {
+ memcpy (r, state.data, state.size);
+ r += state.size;
+ }
-static void
-print_switch_values (file, pos, max, indent, sep, term)
- FILE *file;
- int pos, max;
- const char *indent, *sep, *term;
-{
- size_t j;
- char **p;
+ return result;
+}
- /* Print the options as passed. */
+/* Return a message which says that a PCH file was created with a different
+ setting of OPTION. */
- pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term,
- _("options passed: "), "");
+static const char *
+pch_option_mismatch (const char *option)
+{
+ char *r;
- for (p = &save_argv[1]; *p != NULL; p++)
- if (**p == '-')
- {
- /* Ignore these. */
- if (strcmp (*p, "-o") == 0)
- {
- if (p[1] != NULL)
- p++;
- continue;
- }
- if (strcmp (*p, "-quiet") == 0)
- continue;
- if (strcmp (*p, "-version") == 0)
- continue;
- if ((*p)[1] == 'd')
- continue;
-
- pos = print_single_switch (file, pos, max, indent, sep, term, *p, "");
- }
- if (pos > 0)
- fprintf (file, "%s", term);
+ asprintf (&r, _("created and used with differing settings of '%s'"), option);
+ if (r == NULL)
+ return _("out of memory");
+ return r;
+}
- /* Print the -f and -m options that have been enabled.
- We don't handle language specific options but printing argv
- should suffice. */
+/* Default version of pch_valid_p. */
- pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term,
- _("options enabled: "), "");
+const char *
+default_pch_valid_p (const void *data_p, size_t len)
+{
+ struct cl_option_state state;
+ const char *data = (const char *)data_p;
+ size_t i;
- for (j = 0; j < ARRAY_SIZE (f_options); j++)
- if (*f_options[j].variable == f_options[j].on_value)
- pos = print_single_switch (file, pos, max, indent, sep, term,
- "-f", f_options[j].string);
+ /* -fpic and -fpie also usually make a PCH invalid. */
+ if (data[0] != flag_pic)
+ return _("created and used with different settings of -fpic");
+ if (data[1] != flag_pie)
+ return _("created and used with different settings of -fpie");
+ data += 2;
- /* Print target specific options. */
+ /* Check target_flags. */
+ if (targetm.check_pch_target_flags)
+ {
+ int tf;
+ const char *r;
- for (j = 0; j < ARRAY_SIZE (target_switches); j++)
- if (target_switches[j].name[0] != '\0'
- && target_switches[j].value > 0
- && ((target_switches[j].value & target_flags)
- == target_switches[j].value))
- {
- pos = print_single_switch (file, pos, max, indent, sep, term,
- "-m", target_switches[j].name);
- }
+ memcpy (&tf, data, sizeof (target_flags));
+ data += sizeof (target_flags);
+ len -= sizeof (target_flags);
+ r = targetm.check_pch_target_flags (tf);
+ if (r != NULL)
+ return r;
+ }
-#ifdef TARGET_OPTIONS
- for (j = 0; j < ARRAY_SIZE (target_options); j++)
- if (*target_options[j].variable != NULL)
+ for (i = 0; i < cl_options_count; i++)
+ if (option_affects_pch_p (i, &state))
{
- char prefix[256];
- sprintf (prefix, "-m%s", target_options[j].prefix);
- pos = print_single_switch (file, pos, max, indent, sep, term,
- prefix, *target_options[j].variable);
+ if (memcmp (data, state.data, state.size) != 0)
+ return pch_option_mismatch (cl_options[i].opt_text);
+ data += state.size;
+ len -= state.size;
}
-#endif
- fprintf (file, "%s", term);
+ return NULL;
}
-\f
-/* Open assembly code output file. Do this even if -fsyntax-only is
- on, because then the driver will have provided the name of a
- temporary file or bit bucket for us. NAME is the file specified on
- the command line, possibly NULL. */
-static void
-init_asm_output (name)
- const char *name;
+
+/* Default tree printer. Handles declarations only. */
+static bool
+default_tree_printer (pretty_printer * pp, text_info *text, const char *spec,
+ int precision, bool wide, bool set_locus, bool hash)
{
- if (name == NULL && asm_file_name == 0)
- asm_out_file = stdout;
- else
+ tree t;
+
+ /* FUTURE: %+x should set the locus. */
+ if (precision != 0 || wide || hash)
+ return false;
+
+ switch (*spec)
{
- if (asm_file_name == 0)
- {
- int len = strlen (dump_base_name);
- char *dumpname = (char *) xmalloc (len + 6);
- memcpy (dumpname, dump_base_name, len + 1);
- strip_off_ending (dumpname, len);
- strcat (dumpname, ".s");
- asm_file_name = dumpname;
- }
- if (!strcmp (asm_file_name, "-"))
- asm_out_file = stdout;
- else
- asm_out_file = fopen (asm_file_name, "w");
- if (asm_out_file == 0)
- fatal_io_error ("can't open %s for writing", asm_file_name);
+ case 'D':
+ t = va_arg (*text->args_ptr, tree);
+ if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t))
+ t = DECL_DEBUG_EXPR (t);
+ break;
+
+ case 'F':
+ case 'T':
+ t = va_arg (*text->args_ptr, tree);
+ break;
+
+ default:
+ return false;
}
-#ifdef IO_BUFFER_SIZE
- setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
- _IOFBF, IO_BUFFER_SIZE);
-#endif
+ if (set_locus && text->locus)
+ *text->locus = DECL_SOURCE_LOCATION (t);
- if (!flag_syntax_only)
+ if (DECL_P (t))
{
-#ifdef ASM_FILE_START
- ASM_FILE_START (asm_out_file);
-#endif
-
-#ifdef ASM_COMMENT_START
- if (flag_verbose_asm)
- {
- /* Print the list of options in effect. */
- print_version (asm_out_file, ASM_COMMENT_START);
- print_switch_values (asm_out_file, 0, MAX_LINE,
- ASM_COMMENT_START, " ", "\n");
- /* Add a blank line here so it appears in assembler output but not
- screen output. */
- fprintf (asm_out_file, "\n");
- }
-#endif
+ const char *n = DECL_NAME (t)
+ ? lang_hooks.decl_printable_name (t, 2)
+ : "<anonymous>";
+ pp_string (pp, n);
}
+ else
+ dump_generic_node (pp, t, 0, TDF_DIAGNOSTIC, 0);
+
+ return true;
+}
+
+/* A helper function; used as the reallocator function for cpp's line
+ table. */
+static void *
+realloc_for_line_map (void *ptr, size_t len)
+{
+ return ggc_realloc (ptr, len);
}
-\f
+
/* Initialization of the front end environment, before command line
options are parsed. Signal handlers, internationalization etc.
ARGV0 is main's argv[0]. */
static void
-general_init (argv0)
- char *argv0;
+general_init (const char *argv0)
{
- char *p;
+ const char *p;
p = argv0 + strlen (argv0);
while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
xmalloc_set_program_name (progname);
+ hex_init ();
+
+ /* Unlock the stdio streams. */
+ unlock_std_streams ();
+
gcc_init_libintl ();
- /* Install handler for SIGFPE, which may be received while we do
- compile-time floating point arithmetic. */
- signal (SIGFPE, float_signal);
+ /* Initialize the diagnostics reporting machinery, so option parsing
+ can give warnings and errors. */
+ diagnostic_initialize (global_dc);
+ /* Set a default printer. Language specific initializations will
+ override it later. */
+ pp_format_decoder (global_dc->printer) = &default_tree_printer;
/* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */
#ifdef SIGSEGV
#if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT)
signal (SIGIOT, crash_signal);
#endif
+#ifdef SIGFPE
+ signal (SIGFPE, crash_signal);
+#endif
- /* Initialize the diagnostics reporting machinery, so option parsing
- can give warnings and errors. */
- diagnostic_initialize (global_dc);
-}
-\f
-/* Parse command line options and set default flag values, called
- after language-independent option-independent initialization. Do
- minimal options processing. Outputting diagnostics is OK, but GC
- and identifier hashtables etc. are not initialized yet. */
-static void
-parse_options_and_default_flags (argc, argv)
- int argc;
- char **argv;
-{
- int i;
+ /* Other host-specific signal setup. */
+ (*host_hooks.extra_signals)();
- /* Save in case md file wants to emit args as a comment. */
- save_argc = argc;
- save_argv = argv;
+ /* Initialize the garbage-collector, string pools and tree type hash
+ table. */
+ init_ggc ();
+ init_stringpool ();
+ line_table = GGC_NEW (struct line_maps);
+ linemap_init (line_table);
+ line_table->reallocator = realloc_for_line_map;
+ init_ttree ();
/* Initialize register usage now so switches may override. */
init_reg_sets ();
/* Register the language-independent parameters. */
add_params (lang_independent_params, LAST_PARAM);
- /* Perform language-specific options initialization. */
- (*lang_hooks.init_options) ();
+ /* This must be done after add_params but before argument processing. */
+ init_ggc_heuristics();
+ init_optimization_passes ();
+ statistics_early_init ();
+}
- /* Scan to see what optimization level has been specified. That will
- determine the default value of many flags. */
- for (i = 1; i < argc; i++)
- {
- if (!strcmp (argv[i], "-O"))
- {
- optimize = 1;
- optimize_size = 0;
- }
- else if (argv[i][0] == '-' && argv[i][1] == 'O')
- {
- /* Handle -Os, -O2, -O3, -O69, ... */
- char *p = &argv[i][2];
+/* Return true if the current target supports -fsection-anchors. */
- if ((p[0] == 's') && (p[1] == 0))
- {
- optimize_size = 1;
+static bool
+target_supports_section_anchors_p (void)
+{
+ if (targetm.min_anchor_offset == 0 && targetm.max_anchor_offset == 0)
+ return false;
- /* Optimizing for size forces optimize to be 2. */
- optimize = 2;
- }
- else
- {
- const int optimize_val = read_integral_parameter (p, p - 2, -1);
- if (optimize_val != -1)
- {
- optimize = optimize_val;
- optimize_size = 0;
- }
- }
- }
- }
+ if (targetm.asm_out.output_anchor == NULL)
+ return false;
- if (!optimize)
- {
- flag_merge_constants = 0;
- }
+ return true;
+}
- if (optimize >= 1)
- {
- flag_defer_pop = 1;
- flag_thread_jumps = 1;
-#ifdef DELAY_SLOTS
- flag_delayed_branch = 1;
-#endif
-#ifdef CAN_DEBUG_WITHOUT_FP
- flag_omit_frame_pointer = 1;
-#endif
- flag_guess_branch_prob = 1;
- flag_cprop_registers = 1;
- }
+/* Default the align_* variables to 1 if they're still unset, and
+ set up the align_*_log variables. */
+static void
+init_alignments (void)
+{
+ if (align_loops <= 0)
+ align_loops = 1;
+ if (align_loops_max_skip > align_loops)
+ align_loops_max_skip = align_loops - 1;
+ align_loops_log = floor_log2 (align_loops * 2 - 1);
+ if (align_jumps <= 0)
+ align_jumps = 1;
+ if (align_jumps_max_skip > align_jumps)
+ align_jumps_max_skip = align_jumps - 1;
+ align_jumps_log = floor_log2 (align_jumps * 2 - 1);
+ if (align_labels <= 0)
+ align_labels = 1;
+ align_labels_log = floor_log2 (align_labels * 2 - 1);
+ if (align_labels_max_skip > align_labels)
+ align_labels_max_skip = align_labels - 1;
+ if (align_functions <= 0)
+ align_functions = 1;
+ align_functions_log = floor_log2 (align_functions * 2 - 1);
+}
- if (optimize >= 2)
- {
- flag_optimize_sibling_calls = 1;
- flag_cse_follow_jumps = 1;
- flag_cse_skip_blocks = 1;
- flag_gcse = 1;
- flag_expensive_optimizations = 1;
- flag_strength_reduce = 1;
- flag_rerun_cse_after_loop = 1;
- flag_rerun_loop_opt = 1;
- flag_caller_saves = 1;
- flag_force_mem = 1;
- flag_peephole2 = 1;
-#ifdef INSN_SCHEDULING
- flag_schedule_insns = 1;
- flag_schedule_insns_after_reload = 1;
-#endif
- flag_regmove = 1;
- flag_strict_aliasing = 1;
- flag_delete_null_pointer_checks = 1;
- flag_reorder_blocks = 1;
- }
+/* Process the options that have been parsed. */
+static void
+process_options (void)
+{
+ /* Just in case lang_hooks.post_options ends up calling a debug_hook.
+ This can happen with incorrect pre-processed input. */
+ debug_hooks = &do_nothing_debug_hooks;
+
+ /* This replaces set_Wunused. */
+ if (warn_unused_function == -1)
+ warn_unused_function = warn_unused;
+ if (warn_unused_label == -1)
+ warn_unused_label = warn_unused;
+ /* Wunused-parameter is enabled if both -Wunused -Wextra are enabled. */
+ if (warn_unused_parameter == -1)
+ warn_unused_parameter = (warn_unused && extra_warnings);
+ if (warn_unused_variable == -1)
+ warn_unused_variable = warn_unused;
+ if (warn_unused_value == -1)
+ warn_unused_value = warn_unused;
+
+ /* Allow the front end to perform consistency checks and do further
+ initialization based on the command line options. This hook also
+ sets the original filename if appropriate (e.g. foo.i -> foo.c)
+ so we can correctly initialize debug output. */
+ no_backend = lang_hooks.post_options (&main_input_filename);
- if (optimize >= 3)
- {
- flag_inline_functions = 1;
- flag_rename_registers = 1;
- }
+#ifdef OVERRIDE_OPTIONS
+ /* Some machines may reject certain combinations of options. */
+ OVERRIDE_OPTIONS;
+#endif
- if (optimize < 2 || optimize_size)
+ if (flag_section_anchors && !target_supports_section_anchors_p ())
{
- align_loops = 1;
- align_jumps = 1;
- align_labels = 1;
- align_functions = 1;
+ warning (OPT_fsection_anchors,
+ "this target does not support %qs", "-fsection-anchors");
+ flag_section_anchors = 0;
}
- /* Initialize whether `char' is signed. */
- flag_signed_char = DEFAULT_SIGNED_CHAR;
-#ifdef DEFAULT_SHORT_ENUMS
- /* Initialize how much space enums occupy, by default. */
- flag_short_enums = DEFAULT_SHORT_ENUMS;
-#endif
-
- /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
- modify it. */
- target_flags = 0;
- set_target_switch ("");
-
- /* Unwind tables are always present in an ABI-conformant IA-64
- object file, so the default should be ON. */
-#ifdef IA64_UNWIND_INFO
- flag_unwind_tables = IA64_UNWIND_INFO;
-#endif
-
-#ifdef OPTIMIZATION_OPTIONS
- /* Allow default optimizations to be specified on a per-machine basis. */
- OPTIMIZATION_OPTIONS (optimize, optimize_size);
-#endif
+ if (flag_short_enums == 2)
+ flag_short_enums = targetm.default_short_enums ();
- /* Perform normal command line switch decoding. */
- for (i = 1; i < argc;)
+ /* Set aux_base_name if not already set. */
+ if (aux_base_name)
+ ;
+ else if (main_input_filename)
{
- int lang_processed;
- int indep_processed;
-
- /* Give the language a chance to decode the option for itself. */
- lang_processed = (*lang_hooks.decode_option) (argc - i, argv + i);
-
- if (lang_processed >= 0)
- /* Now see if the option also has a language independent meaning.
- Some options are both language specific and language independent,
- eg --help. */
- indep_processed = independent_decode_option (argc - i, argv + i);
- else
- {
- lang_processed = -lang_processed;
- indep_processed = 0;
- }
-
- if (lang_processed || indep_processed)
- i += MAX (lang_processed, indep_processed);
- else
- {
- const char *option = NULL;
- const char *lang = NULL;
- unsigned int j;
-
- /* It is possible that the command line switch is not valid for the
- current language, but it is valid for another language. In order
- to be compatible with previous versions of the compiler (which
- did not issue an error message in this case) we check for this
- possibility here. If we do find a match, then if extra_warnings
- is set we generate a warning message, otherwise we will just
- ignore the option. */
- for (j = 0; j < ARRAY_SIZE (documented_lang_options); j++)
- {
- option = documented_lang_options[j].option;
-
- if (option == NULL)
- lang = documented_lang_options[j].description;
- else if (! strncmp (argv[i], option, strlen (option)))
- break;
- }
-
- if (j != ARRAY_SIZE (documented_lang_options))
- {
- if (extra_warnings)
- {
- warning ("ignoring command line option '%s'", argv[i]);
- if (lang)
- warning
- ("(it is valid for %s but not the selected language)",
- lang);
- }
- }
- else if (argv[i][0] == '-' && argv[i][1] == 'g')
- warning ("`%s': unknown or unsupported -g option", &argv[i][2]);
- else
- error ("unrecognized option `%s'", argv[i]);
+ char *name = xstrdup (lbasename (main_input_filename));
- i++;
- }
+ strip_off_ending (name, strlen (name));
+ aux_base_name = name;
}
-
- if (flag_no_inline == 2)
- flag_no_inline = 0;
else
- flag_really_no_inline = flag_no_inline;
-
- /* Set flag_no_inline before the post_options () hook. The C front
- ends use it to determine tree inlining defaults. FIXME: such
- code should be lang-independent when all front ends use tree
- inlining, in which case it, and this condition, should be moved
- to the top of process_options() instead. */
- if (optimize == 0)
- {
- /* Inlining does not work if not optimizing,
- so force it not to be done. */
- flag_no_inline = 1;
- warn_inline = 0;
-
- /* The c_decode_option function and decode_option hook set
- this to `2' if -Wall is used, so we can avoid giving out
- lots of errors for people who don't realize what -Wall does. */
- if (warn_uninitialized == 1)
- warning ("-Wuninitialized is not supported without -O");
- }
-
- if (flag_really_no_inline == 2)
- flag_really_no_inline = flag_no_inline;
+ aux_base_name = "gccaux";
- /* All command line options have been parsed; allow the front end to
- perform consistency checks, etc. */
- (*lang_hooks.post_options) ();
-}
-\f
-/* Process the options that have been parsed. */
-static void
-process_options ()
-{
-#ifdef OVERRIDE_OPTIONS
- /* Some machines may reject certain combinations of options. */
- OVERRIDE_OPTIONS;
+#ifndef HAVE_cloog
+ if (flag_graphite
+ || flag_loop_block
+ || flag_loop_interchange
+ || flag_loop_strip_mine
+ || flag_graphite_identity)
+ sorry ("Graphite loop optimizations cannot be used");
#endif
- /* Set up the align_*_log variables, defaulting them to 1 if they
- were still unset. */
- if (align_loops <= 0) align_loops = 1;
- if (align_loops_max_skip > align_loops || !align_loops)
- align_loops_max_skip = align_loops - 1;
- align_loops_log = floor_log2 (align_loops * 2 - 1);
- if (align_jumps <= 0) align_jumps = 1;
- if (align_jumps_max_skip > align_jumps || !align_jumps)
- align_jumps_max_skip = align_jumps - 1;
- align_jumps_log = floor_log2 (align_jumps * 2 - 1);
- if (align_labels <= 0) align_labels = 1;
- align_labels_log = floor_log2 (align_labels * 2 - 1);
- if (align_labels_max_skip > align_labels || !align_labels)
- align_labels_max_skip = align_labels - 1;
- if (align_functions <= 0) align_functions = 1;
- align_functions_log = floor_log2 (align_functions * 2 - 1);
-
/* Unrolling all loops implies that standard loop unrolling must also
be done. */
if (flag_unroll_all_loops)
flag_unroll_loops = 1;
- /* Loop unrolling requires that strength_reduction be on also. Silently
- turn on strength reduction here if it isn't already on. Also, the loop
- unrolling code assumes that cse will be run after loop, so that must
- be turned on also. */
- if (flag_unroll_loops)
- {
- flag_strength_reduce = 1;
- flag_rerun_cse_after_loop = 1;
- }
+
+ /* The loop unrolling code assumes that cse will be run after loop.
+ web and rename-registers also help when run after loop unrolling. */
+
+ if (flag_rerun_cse_after_loop == AUTODETECT_VALUE)
+ flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops;
+ if (flag_web == AUTODETECT_VALUE)
+ flag_web = flag_unroll_loops || flag_peel_loops;
+ if (flag_rename_registers == AUTODETECT_VALUE)
+ flag_rename_registers = flag_unroll_loops || flag_peel_loops;
if (flag_non_call_exceptions)
flag_asynchronous_unwind_tables = 1;
if (flag_asynchronous_unwind_tables)
flag_unwind_tables = 1;
+ if (flag_value_profile_transformations)
+ flag_profile_values = 1;
+
/* Warn about options that are not supported on this machine. */
#ifndef INSN_SCHEDULING
if (flag_schedule_insns || flag_schedule_insns_after_reload)
- warning ("instruction scheduling not supported on this target machine");
+ warning (0, "instruction scheduling not supported on this target machine");
#endif
#ifndef DELAY_SLOTS
if (flag_delayed_branch)
- warning ("this target machine does not have delayed branches");
+ warning (0, "this target machine does not have delayed branches");
#endif
- /* Some operating systems do not allow profiling without a frame
- pointer. */
- if (!TARGET_ALLOWS_PROFILING_WITHOUT_FRAME_POINTER
- && profile_flag
- && flag_omit_frame_pointer)
- {
- error ("profiling does not work without a frame pointer");
- flag_omit_frame_pointer = 0;
- }
-
user_label_prefix = USER_LABEL_PREFIX;
if (flag_leading_underscore != -1)
{
user_label_prefix = flag_leading_underscore ? "_" : "";
}
else
- warning ("-f%sleading-underscore not supported on this target machine",
+ warning (0, "-f%sleading-underscore not supported on this target machine",
flag_leading_underscore ? "" : "no-");
}
{
print_version (stderr, "");
if (! quiet_flag)
- print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n");
+ print_switch_values (print_to_stderr);
}
- if (! quiet_flag || flag_detailed_statistics)
- time_report = 1;
-
if (flag_syntax_only)
{
write_symbols = NO_DEBUG;
profile_flag = 0;
}
+ /* A lot of code assumes write_symbols == NO_DEBUG if the debugging
+ level is 0. */
+ if (debug_info_level == DINFO_LEVEL_NONE)
+ write_symbols = NO_DEBUG;
+
/* Now we know write_symbols, set up the debug hooks based on it.
By default we do nothing for debug output. */
+ if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG)
+ default_debug_hooks = &do_nothing_debug_hooks;
+#if defined(DBX_DEBUGGING_INFO)
+ else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG)
+ default_debug_hooks = &dbx_debug_hooks;
+#endif
+#if defined(XCOFF_DEBUGGING_INFO)
+ else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG)
+ default_debug_hooks = &xcoff_debug_hooks;
+#endif
+#ifdef SDB_DEBUGGING_INFO
+ else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG)
+ default_debug_hooks = &sdb_debug_hooks;
+#endif
+#ifdef DWARF2_DEBUGGING_INFO
+ else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG)
+ default_debug_hooks = &dwarf2_debug_hooks;
+#endif
+#ifdef VMS_DEBUGGING_INFO
+ else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG
+ || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG)
+ default_debug_hooks = &vmsdbg_debug_hooks;
+#endif
+
+ if (write_symbols == NO_DEBUG)
+ ;
#if defined(DBX_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG)
+ else if (write_symbols == DBX_DEBUG)
debug_hooks = &dbx_debug_hooks;
#endif
#if defined(XCOFF_DEBUGGING_INFO)
- if (write_symbols == XCOFF_DEBUG)
+ else if (write_symbols == XCOFF_DEBUG)
debug_hooks = &xcoff_debug_hooks;
#endif
#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
+ else if (write_symbols == SDB_DEBUG)
debug_hooks = &sdb_debug_hooks;
#endif
-#ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- debug_hooks = &dwarf_debug_hooks;
-#endif
#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
+ else if (write_symbols == DWARF2_DEBUG)
debug_hooks = &dwarf2_debug_hooks;
#endif
#ifdef VMS_DEBUGGING_INFO
- if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG)
+ else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG)
debug_hooks = &vmsdbg_debug_hooks;
#endif
+ else
+ error ("target system does not support the \"%s\" debug format",
+ debug_type_names[write_symbols]);
+
+ /* Now we know which debug output will be used so we can set
+ flag_var_tracking, flag_rename_registers if the user has
+ not specified them. */
+ if (debug_info_level < DINFO_LEVEL_NORMAL
+ || debug_hooks->var_location == do_nothing_debug_hooks.var_location)
+ {
+ if (flag_var_tracking == 1
+ || flag_var_tracking_uninit == 1)
+ {
+ if (debug_info_level < DINFO_LEVEL_NORMAL)
+ warning (0, "variable tracking requested, but useless unless "
+ "producing debug info");
+ else
+ warning (0, "variable tracking requested, but not supported "
+ "by this debug format");
+ }
+ flag_var_tracking = 0;
+ flag_var_tracking_uninit = 0;
+ }
+
+ if (flag_rename_registers == AUTODETECT_VALUE)
+ flag_rename_registers = default_debug_hooks->var_location
+ != do_nothing_debug_hooks.var_location;
+
+ if (flag_var_tracking == AUTODETECT_VALUE)
+ flag_var_tracking = optimize >= 1;
+
+ if (flag_tree_cselim == AUTODETECT_VALUE)
+#ifdef HAVE_conditional_move
+ flag_tree_cselim = 1;
+#else
+ flag_tree_cselim = 0;
+#endif
+
+ /* If the user specifically requested variable tracking with tagging
+ uninitialized variables, we need to turn on variable tracking.
+ (We already determined above that variable tracking is feasible.) */
+ if (flag_var_tracking_uninit)
+ flag_var_tracking = 1;
/* If auxiliary info generation is desired, open the output file.
This goes in the same directory as the source file--unlike
{
aux_info_file = fopen (aux_info_file_name, "w");
if (aux_info_file == 0)
- fatal_io_error ("can't open %s", aux_info_file_name);
+ fatal_error ("can%'t open %s: %m", aux_info_file_name);
}
if (! targetm.have_named_sections)
{
if (flag_function_sections)
{
- warning ("-ffunction-sections not supported for this target");
+ warning (0, "-ffunction-sections not supported for this target");
flag_function_sections = 0;
}
if (flag_data_sections)
{
- warning ("-fdata-sections not supported for this target");
+ warning (0, "-fdata-sections not supported for this target");
flag_data_sections = 0;
}
}
if (flag_function_sections && profile_flag)
{
- warning ("-ffunction-sections disabled; it makes profiling impossible");
+ warning (0, "-ffunction-sections disabled; it makes profiling impossible");
flag_function_sections = 0;
}
#ifndef HAVE_prefetch
if (flag_prefetch_loop_arrays)
{
- warning ("-fprefetch-loop-arrays not supported for this target");
+ warning (0, "-fprefetch-loop-arrays not supported for this target");
flag_prefetch_loop_arrays = 0;
}
#else
if (flag_prefetch_loop_arrays && !HAVE_prefetch)
{
- warning ("-fprefetch-loop-arrays not supported for this target (try -march switches)");
+ warning (0, "-fprefetch-loop-arrays not supported for this target (try -march switches)");
flag_prefetch_loop_arrays = 0;
}
#endif
make much sense anyway, so don't allow it. */
if (flag_prefetch_loop_arrays && optimize_size)
{
- warning ("-fprefetch-loop-arrays is not supported with -Os");
+ warning (0, "-fprefetch-loop-arrays is not supported with -Os");
flag_prefetch_loop_arrays = 0;
}
-#ifndef OBJECT_FORMAT_ELF
- if (flag_function_sections && write_symbols != NO_DEBUG)
- warning ("-ffunction-sections may affect debugging on some targets");
-#endif
+ /* The presence of IEEE signaling NaNs, implies all math can trap. */
+ if (flag_signaling_nans)
+ flag_trapping_math = 1;
+
+ /* We cannot reassociate if we want traps or signed zeros. */
+ if (flag_associative_math && (flag_trapping_math || flag_signed_zeros))
+ {
+ warning (0, "-fassociative-math disabled; other options take precedence");
+ flag_associative_math = 0;
+ }
+
+ /* With -fcx-limited-range, we do cheap and quick complex arithmetic. */
+ if (flag_cx_limited_range)
+ flag_complex_method = 0;
+
+ /* With -fcx-fortran-rules, we do something in-between cheap and C99. */
+ if (flag_cx_fortran_rules)
+ flag_complex_method = 1;
+
+ /* Targets must be able to place spill slots at lower addresses. If the
+ target already uses a soft frame pointer, the transition is trivial. */
+ if (!FRAME_GROWS_DOWNWARD && flag_stack_protect)
+ {
+ warning (0, "-fstack-protector not supported for this target");
+ flag_stack_protect = 0;
+ }
+ if (!flag_stack_protect)
+ warn_stack_protect = 0;
+
+ /* ??? Unwind info is not correct around the CFG unless either a frame
+ pointer is present or A_O_A is set. Fixing this requires rewriting
+ unwind info generation to be aware of the CFG and propagating states
+ around edges. */
+ if (flag_unwind_tables && !ACCUMULATE_OUTGOING_ARGS
+ && flag_omit_frame_pointer)
+ {
+ warning (0, "unwind tables currently require a frame pointer "
+ "for correctness");
+ flag_omit_frame_pointer = 0;
+ }
}
-\f
-/* Language-independent initialization, before language-dependent
- initialization. */
+
+/* This function can be called multiple times to reinitialize the compiler
+ back end when register classes or instruction sets have changed,
+ before each function. */
static void
-lang_independent_init ()
+backend_init_target (void)
{
- decl_printable_name = decl_name;
- lang_expand_expr = (lang_expand_expr_t) do_abort;
+ /* Initialize alignment variables. */
+ init_alignments ();
- /* Set the language-dependent identifier size. */
- tree_code_length[(int) IDENTIFIER_NODE]
- = ((lang_hooks.identifier_size - sizeof (struct tree_common)
- + sizeof (tree) - 1) / sizeof (tree));
+ /* This reinitializes hard_frame_pointer, and calls init_reg_modes_target()
+ to initialize reg_raw_mode[]. */
+ init_emit_regs ();
- /* Initialize the garbage-collector, and string pools. */
- init_ggc ();
- ggc_add_rtx_root (&stack_limit_rtx, 1);
- ggc_add_tree_root (¤t_function_decl, 1);
- ggc_add_tree_root (¤t_function_func_begin_label, 1);
+ /* This invokes target hooks to set fixed_reg[] etc, which is
+ mode-dependent. */
+ init_regs ();
- init_stringpool ();
- init_obstacks ();
+ /* This depends on stack_pointer_rtx. */
+ init_fake_stack_mems ();
+
+ /* Sets static_base_value[HARD_FRAME_POINTER_REGNUM], which is
+ mode-dependent. */
+ init_alias_target ();
+
+ /* Depends on HARD_FRAME_POINTER_REGNUM. */
+ init_reload ();
+
+ /* The following initialization functions need to generate rtl, so
+ provide a dummy function context for them. */
+ init_dummy_function_start ();
+
+ /* rtx_cost is mode-dependent, so cached values need to be recomputed
+ on a mode change. */
+ init_expmed ();
+
+ /* We may need to recompute regno_save_code[] and regno_restore_code[]
+ after a mode change as well. */
+ if (flag_caller_saves)
+ init_caller_save ();
+ expand_dummy_function_end ();
+}
+/* Initialize the compiler back end. This function is called only once,
+ when starting the compiler. */
+static void
+backend_init (void)
+{
init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL
|| debug_info_level == DINFO_LEVEL_VERBOSE
#ifdef VMS_DEBUGGING_INFO
- /* Enable line number info for traceback */
+ /* Enable line number info for traceback. */
|| debug_info_level > DINFO_LEVEL_NONE
#endif
- || flag_test_coverage
- || warn_notreached);
- init_regs ();
- init_alias_once ();
- init_stmt ();
- init_loop ();
- init_reload ();
- init_function_once ();
- init_stor_layout_once ();
+ || flag_test_coverage);
+
+ init_rtlanal ();
+ init_inline_once ();
init_varasm_once ();
- init_EXPR_INSN_LIST_cache ();
+ save_register_info ();
+
+ /* Initialize the target-specific back end pieces. */
+ ira_init_once ();
+ backend_init_target ();
+}
+
+/* Initialize things that are both lang-dependent and target-dependent.
+ This function can be called more than once if target parameters change. */
+static void
+lang_dependent_init_target (void)
+{
+ /* This creates various _DECL nodes, so needs to be called after the
+ front end is initialized. It also depends on the HAVE_xxx macros
+ generated from the target machine description. */
+ init_optabs ();
/* The following initialization functions need to generate rtl, so
provide a dummy function context for them. */
init_dummy_function_start ();
- init_expmed ();
- init_expr_once ();
- if (flag_caller_saves)
- init_caller_save ();
+
+ /* Do the target-specific parts of expr initialization. */
+ init_expr_target ();
+
+ /* Although the actions of these functions are language-independent,
+ they use optabs, so we cannot call them from backend_init. */
+ init_set_costs ();
+ ira_init ();
+
expand_dummy_function_end ();
}
-\f
-/* Language-dependent initialization. Returns non-zero on success. */
+
+/* Language-dependent initialization. Returns nonzero on success. */
static int
-lang_dependent_init (name)
- const char *name;
+lang_dependent_init (const char *name)
{
+ location_t save_loc = input_location;
if (dump_base_name == 0)
- dump_base_name = name ? name : "gccdump";
-
- /* Front-end initialization. This hook can assume that GC,
- identifier hashes etc. are set up, but debug initialization is
- not done yet. This routine must return the original filename
- (e.g. foo.i -> foo.c) so can correctly initialize debug output. */
- name = (*lang_hooks.init) (name);
- if (name == NULL)
+ dump_base_name = name && name[0] ? name : "gccdump";
+
+ /* Other front-end initialization. */
+ input_location = BUILTINS_LOCATION;
+ if (lang_hooks.init () == 0)
return 0;
+ input_location = save_loc;
- /* Is this duplication necessary? */
- name = ggc_strdup (name);
- main_input_filename = input_filename = name;
init_asm_output (name);
- /* These create various _DECL nodes, so need to be called after the
+ /* This creates various _DECL nodes, so needs to be called after the
front end is initialized. */
init_eh ();
- init_optabs ();
- /* Put an entry on the input file stack for the main input file. */
- push_srcloc (input_filename, 0);
+ /* Do the target-specific parts of the initialization. */
+ lang_dependent_init_target ();
/* If dbx symbol table desired, initialize writing it and output the
predefined types. */
timevar_push (TV_SYMOUT);
-#ifdef DWARF2_UNWIND_INFO
+#if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO
if (dwarf2out_do_frame ())
dwarf2out_frame_init ();
#endif
return 1;
}
-\f
+
+
+/* Reinitialize everything when target parameters, such as register usage,
+ have changed. */
+void
+target_reinit (void)
+{
+ /* Reinitialize RTL backend. */
+ backend_init_target ();
+
+ /* Reinitialize lang-dependent parts. */
+ lang_dependent_init_target ();
+}
+
+void
+dump_memory_report (bool final)
+{
+ ggc_print_statistics ();
+ stringpool_statistics ();
+ dump_tree_statistics ();
+ dump_gimple_statistics ();
+ dump_rtx_statistics ();
+ dump_varray_statistics ();
+ dump_alloc_pool_statistics ();
+ dump_bitmap_statistics ();
+ dump_vec_loc_statistics ();
+ dump_ggc_loc_statistics (final);
+}
+
/* Clean up: close opened files, etc. */
static void
-finalize ()
+finalize (void)
{
/* Close the dump files. */
if (flag_gen_aux_info)
if (asm_out_file)
{
if (ferror (asm_out_file) != 0)
- fatal_io_error ("error writing to %s", asm_file_name);
+ fatal_error ("error writing to %s: %m", asm_file_name);
if (fclose (asm_out_file) != 0)
- fatal_io_error ("error closing %s", asm_file_name);
+ fatal_error ("error closing %s: %m", asm_file_name);
}
- /* Do whatever is necessary to finish printing the graphs. */
- if (graph_dump_format != no_graph)
- {
- int i;
-
- for (i = 0; i < (int) DFI_MAX; ++i)
- if (dump_file[i].initialized && dump_file[i].graph_dump_p)
- {
- char seq[16];
- char *suffix;
-
- sprintf (seq, DUMPFILE_FORMAT, i);
- suffix = concat (seq, dump_file[i].extension, NULL);
- finish_graph_dump_file (dump_base_name, suffix);
- free (suffix);
- }
- }
+ statistics_fini ();
+ finish_optimization_passes ();
- if (mem_report)
- {
- ggc_print_statistics ();
- stringpool_statistics ();
- dump_tree_statistics ();
- }
+ ira_finish_once ();
- /* Free up memory for the benefit of leak detectors. */
- free_reg_info ();
+ if (mem_report)
+ dump_memory_report (true);
/* Language-specific end of compilation actions. */
- (*lang_hooks.finish) ();
+ lang_hooks.finish ();
}
-\f
+
/* Initialize the compiler, and compile the input file. */
static void
-do_compile ()
+do_compile (void)
{
- /* The bulk of command line switch processing. */
+ /* Initialize timing first. The C front ends read the main file in
+ the post_options hook, and C++ does file timings. */
+ if (time_report || !quiet_flag || flag_detailed_statistics)
+ timevar_init ();
+ timevar_start (TV_TOTAL);
+
process_options ();
- /* We cannot start timing until after options are processed since that
- says if we run timers or not. */
- init_timevar ();
- timevar_start (TV_TOTAL);
+ /* Don't do any more if an error has already occurred. */
+ if (!errorcount)
+ {
+ /* This must be run always, because it is needed to compute the FP
+ predefined macros, such as __LDBL_MAX__, for targets using non
+ default FP formats. */
+ init_adjust_machine_modes ();
- /* Language-independent initialization. Also sets up GC, identifier
- hashes etc. */
- lang_independent_init ();
+ /* Set up the back-end if requested. */
+ if (!no_backend)
+ backend_init ();
- /* Language-dependent initialization. Returns true on success. */
- if (lang_dependent_init (filename))
- compile_file ();
+ /* Language-dependent initialization. Returns true on success. */
+ if (lang_dependent_init (main_input_filename))
+ compile_file ();
- finalize ();
+ finalize ();
+ }
/* Stop timing and print the times. */
timevar_stop (TV_TOTAL);
timevar_print (stderr);
}
-\f
+
/* Entry point of cc1, cc1plus, jc1, f771, etc.
- Decode command args, then call compile_file.
Exit code is FATAL_EXIT_CODE if can't open files or if there were
any errors, or SUCCESS_EXIT_CODE if compilation succeeded.
It is not safe to call this function more than once. */
int
-toplev_main (argc, argv)
- int argc;
- char **argv;
+toplev_main (unsigned int argc, const char **argv)
{
- hex_init ();
+ save_argv = argv;
/* Initialization of GCC's environment, and diagnostics. */
- general_init (argv [0]);
+ general_init (argv[0]);
/* Parse the options and do minimal processing; basically just
enough to default flags appropriately. */
- parse_options_and_default_flags (argc, argv);
+ decode_options (argc, argv);
+
+ init_local_tick ();
/* Exit early if we can (e.g. -help). */
- if (!errorcount && !exit_after_options)
+ if (!exit_after_options)
do_compile ();
+ if (warningcount || errorcount)
+ print_ignored_options ();
+
if (errorcount || sorrycount)
return (FATAL_EXIT_CODE);
projects / msp430-gcc.git / blobdiff