--- /dev/null
+/* SSA operand management for trees.
+ Copyright (C) 2003, 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 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_TREE_SSA_OPERANDS_H
+#define GCC_TREE_SSA_OPERANDS_H
+
+/* Interface to SSA operands. */
+
+
+/* This represents a pointer to a DEF operand. */
+typedef tree *def_operand_p;
+
+/* This represents a pointer to a USE operand. */
+typedef ssa_use_operand_t *use_operand_p;
+
+/* NULL operand types. */
+#define NULL_USE_OPERAND_P NULL
+#define NULL_DEF_OPERAND_P NULL
+
+/* This represents the DEF operands of a stmt. */
+struct def_optype_d
+{
+ struct def_optype_d *next;
+ tree *def_ptr;
+};
+typedef struct def_optype_d *def_optype_p;
+
+/* This represents the USE operands of a stmt. */
+struct use_optype_d
+{
+ struct use_optype_d *next;
+ struct ssa_use_operand_d use_ptr;
+};
+typedef struct use_optype_d *use_optype_p;
+
+typedef struct vuse_element_d
+{
+ tree use_var;
+ struct ssa_use_operand_d use_ptr;
+} vuse_element_t;
+
+typedef struct vuse_vec_d
+{
+ unsigned int num_vuse;
+ vuse_element_t uses[1];
+} vuse_vec_t;
+typedef struct vuse_vec_d *vuse_vec_p;
+
+#define VUSE_VECT_NUM_ELEM(V) (V).num_vuse
+#define VUSE_VECT_ELEMENT_NC(V,X) (V).uses[(X)]
+#define VUSE_ELEMENT_PTR_NC(V,X) (&(VUSE_VECT_ELEMENT_NC ((V),(X)).use_ptr))
+#define VUSE_ELEMENT_VAR_NC(V,X) (VUSE_VECT_ELEMENT_NC ((V),(X)).use_var)
+
+#ifdef ENABLE_CHECKING
+#define VUSE_VECT_ELEMENT(V,X) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_VECT_ELEMENT_NC (V,X))
+
+#define VUSE_ELEMENT_PTR(V,X) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_ELEMENT_PTR_NC (V, X))
+
+#define SET_VUSE_VECT_ELEMENT(V,X,N) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_VECT_ELEMENT_NC (V,X) = (N))
+
+#define SET_VUSE_ELEMENT_VAR(V,X,N) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_VECT_ELEMENT_NC ((V),(X)).use_var = (N))
+
+#define SET_VUSE_ELEMENT_PTR(V,X,N) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_ELEMENT_PTR_NC (V, X) = (N))
+#else
+#define VUSE_VECT_ELEMENT(V,X) VUSE_VECT_ELEMENT_NC(V,X)
+#define VUSE_ELEMENT_PTR(V,X) VUSE_ELEMENT_PTR_NC(V,X)
+#define SET_VUSE_VECT_ELEMENT(V,X,N) VUSE_VECT_ELEMENT_NC(V,X) = (N)
+#define SET_VUSE_ELEMENT_PTR(V,X,N) VUSE_ELEMENT_PTR_NC(V,X) = (N)
+#define SET_VUSE_ELEMENT_VAR(V,X,N) VUSE_VECT_ELEMENT_NC ((V),(X)).use_var = (N)
+#endif
+
+#define VUSE_ELEMENT_VAR(V,X) (VUSE_VECT_ELEMENT ((V),(X)).use_var)
+
+/* This represents the virtual ops of a stmt. */
+struct voptype_d
+{
+ struct voptype_d *next;
+ tree def_var;
+ vuse_vec_t usev;
+};
+typedef struct voptype_d *voptype_p;
+
+/* This structure represents a variable sized buffer which is allocated by the
+ operand memory manager. Operands are suballocated out of this block. The
+ MEM array varies in size. */
+
+struct ssa_operand_memory_d GTY((chain_next("%h.next")))
+{
+ struct ssa_operand_memory_d *next;
+ char mem[1];
+};
+
+/* Number of different size free buckets for virtual operands. */
+#define NUM_VOP_FREE_BUCKETS 29
+
+/* Per-function operand caches. */
+struct ssa_operands GTY(()) {
+ struct ssa_operand_memory_d *operand_memory;
+ unsigned operand_memory_index;
+ /* Current size of the operand memory buffer. */
+ unsigned int ssa_operand_mem_size;
+
+ bool ops_active;
+
+ struct def_optype_d * GTY ((skip (""))) free_defs;
+ struct use_optype_d * GTY ((skip (""))) free_uses;
+ struct voptype_d * GTY ((skip (""))) vop_free_buckets[NUM_VOP_FREE_BUCKETS];
+ VEC(tree,heap) * GTY ((skip (""))) mpt_table;
+};
+
+/* This represents the operand cache for a stmt. */
+struct stmt_operands_d
+{
+ /* Statement operands. */
+ struct def_optype_d * def_ops;
+ struct use_optype_d * use_ops;
+
+ /* Virtual operands (VDEF, VUSE). */
+ struct voptype_d * vdef_ops;
+ struct voptype_d * vuse_ops;
+
+ /* Sets of memory symbols loaded and stored. */
+ bitmap stores;
+ bitmap loads;
+};
+
+typedef struct stmt_operands_d *stmt_operands_p;
+
+#define USE_FROM_PTR(PTR) get_use_from_ptr (PTR)
+#define DEF_FROM_PTR(PTR) get_def_from_ptr (PTR)
+#define SET_USE(USE, V) set_ssa_use_from_ptr (USE, V)
+#define SET_DEF(DEF, V) ((*(DEF)) = (V))
+
+#define USE_STMT(USE) (USE)->loc.stmt
+
+#define USE_OP_PTR(OP) (&((OP)->use_ptr))
+#define USE_OP(OP) (USE_FROM_PTR (USE_OP_PTR (OP)))
+
+#define DEF_OP_PTR(OP) ((OP)->def_ptr)
+#define DEF_OP(OP) (DEF_FROM_PTR (DEF_OP_PTR (OP)))
+
+#define VUSE_OP_PTR(OP,X) VUSE_ELEMENT_PTR ((OP)->usev, (X))
+#define VUSE_OP(OP,X) VUSE_ELEMENT_VAR ((OP)->usev, (X))
+#define SET_VUSE_OP(OP,X,N) SET_VUSE_ELEMENT_VAR ((OP)->usev, (X), (N))
+#define VUSE_NUM(OP) VUSE_VECT_NUM_ELEM ((OP)->usev)
+#define VUSE_VECT(OP) &((OP)->usev)
+
+#define VDEF_RESULT_PTR(OP) (&((OP)->def_var))
+#define VDEF_RESULT(OP) ((OP)->def_var)
+#define VDEF_OP_PTR(OP,X) VUSE_OP_PTR (OP, X)
+#define VDEF_OP(OP,X) VUSE_OP (OP, X)
+#define SET_VDEF_OP(OP,X,N) SET_VUSE_OP (OP, X, N)
+#define VDEF_NUM(OP) VUSE_VECT_NUM_ELEM ((OP)->usev)
+#define VDEF_VECT(OP) &((OP)->usev)
+
+#define PHI_RESULT_PTR(PHI) gimple_phi_result_ptr (PHI)
+#define PHI_RESULT(PHI) DEF_FROM_PTR (PHI_RESULT_PTR (PHI))
+#define SET_PHI_RESULT(PHI, V) SET_DEF (PHI_RESULT_PTR (PHI), (V))
+
+#define PHI_ARG_DEF_PTR(PHI, I) gimple_phi_arg_imm_use_ptr ((PHI), (I))
+#define PHI_ARG_DEF(PHI, I) USE_FROM_PTR (PHI_ARG_DEF_PTR ((PHI), (I)))
+#define SET_PHI_ARG_DEF(PHI, I, V) \
+ SET_USE (PHI_ARG_DEF_PTR ((PHI), (I)), (V))
+#define PHI_ARG_DEF_FROM_EDGE(PHI, E) \
+ PHI_ARG_DEF ((PHI), (E)->dest_idx)
+#define PHI_ARG_DEF_PTR_FROM_EDGE(PHI, E) \
+ PHI_ARG_DEF_PTR ((PHI), (E)->dest_idx)
+#define PHI_ARG_INDEX_FROM_USE(USE) phi_arg_index_from_use (USE)
+
+
+extern void init_ssa_operands (void);
+extern void fini_ssa_operands (void);
+extern void update_stmt_operands (gimple);
+extern void free_stmt_operands (gimple);
+extern bool verify_imm_links (FILE *f, tree var);
+
+extern void copy_virtual_operands (gimple, gimple);
+extern int operand_build_cmp (const void *, const void *);
+extern void create_ssa_artificial_load_stmt (gimple, gimple, bool);
+
+extern void dump_immediate_uses (FILE *file);
+extern void dump_immediate_uses_for (FILE *file, tree var);
+extern void debug_immediate_uses (void);
+extern void debug_immediate_uses_for (tree var);
+extern void dump_decl_set (FILE *, bitmap);
+extern void debug_decl_set (bitmap);
+
+extern bool ssa_operands_active (void);
+
+extern void push_stmt_changes (gimple *);
+extern void pop_stmt_changes (gimple *);
+extern void discard_stmt_changes (gimple *);
+void add_to_addressable_set (tree, bitmap *);
+
+enum ssa_op_iter_type {
+ ssa_op_iter_none = 0,
+ ssa_op_iter_tree,
+ ssa_op_iter_use,
+ ssa_op_iter_def,
+ ssa_op_iter_vdef
+};
+
+/* This structure is used in the operand iterator loops. It contains the
+ items required to determine which operand is retrieved next. During
+ optimization, this structure is scalarized, and any unused fields are
+ optimized away, resulting in little overhead. */
+
+typedef struct ssa_operand_iterator_d
+{
+ def_optype_p defs;
+ use_optype_p uses;
+ voptype_p vuses;
+ voptype_p vdefs;
+ voptype_p mayuses;
+ enum ssa_op_iter_type iter_type;
+ int phi_i;
+ int num_phi;
+ gimple phi_stmt;
+ bool done;
+ unsigned int vuse_index;
+ unsigned int mayuse_index;
+} ssa_op_iter;
+
+/* These flags are used to determine which operands are returned during
+ execution of the loop. */
+#define SSA_OP_USE 0x01 /* Real USE operands. */
+#define SSA_OP_DEF 0x02 /* Real DEF operands. */
+#define SSA_OP_VUSE 0x04 /* VUSE operands. */
+#define SSA_OP_VMAYUSE 0x08 /* USE portion of VDEFS. */
+#define SSA_OP_VDEF 0x10 /* DEF portion of VDEFS. */
+
+/* These are commonly grouped operand flags. */
+#define SSA_OP_VIRTUAL_USES (SSA_OP_VUSE | SSA_OP_VMAYUSE)
+#define SSA_OP_VIRTUAL_DEFS (SSA_OP_VDEF)
+#define SSA_OP_ALL_VIRTUALS (SSA_OP_VIRTUAL_USES | SSA_OP_VIRTUAL_DEFS)
+#define SSA_OP_ALL_USES (SSA_OP_VIRTUAL_USES | SSA_OP_USE)
+#define SSA_OP_ALL_DEFS (SSA_OP_VIRTUAL_DEFS | SSA_OP_DEF)
+#define SSA_OP_ALL_OPERANDS (SSA_OP_ALL_USES | SSA_OP_ALL_DEFS)
+
+/* This macro executes a loop over the operands of STMT specified in FLAG,
+ returning each operand as a 'tree' in the variable TREEVAR. ITER is an
+ ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_TREE_OPERAND(TREEVAR, STMT, ITER, FLAGS) \
+ for (TREEVAR = op_iter_init_tree (&(ITER), STMT, FLAGS); \
+ !op_iter_done (&(ITER)); \
+ TREEVAR = op_iter_next_tree (&(ITER)))
+
+/* This macro executes a loop over the operands of STMT specified in FLAG,
+ returning each operand as a 'use_operand_p' in the variable USEVAR.
+ ITER is an ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_USE_OPERAND(USEVAR, STMT, ITER, FLAGS) \
+ for (USEVAR = op_iter_init_use (&(ITER), STMT, FLAGS); \
+ !op_iter_done (&(ITER)); \
+ USEVAR = op_iter_next_use (&(ITER)))
+
+/* This macro executes a loop over the operands of STMT specified in FLAG,
+ returning each operand as a 'def_operand_p' in the variable DEFVAR.
+ ITER is an ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_DEF_OPERAND(DEFVAR, STMT, ITER, FLAGS) \
+ for (DEFVAR = op_iter_init_def (&(ITER), STMT, FLAGS); \
+ !op_iter_done (&(ITER)); \
+ DEFVAR = op_iter_next_def (&(ITER)))
+
+/* This macro executes a loop over the VDEF operands of STMT. The def
+ and use vector for each VDEF is returned in DEFVAR and USEVECT.
+ ITER is an ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_VDEF_OPERAND(DEFVAR, USEVECT, STMT, ITER) \
+ for (op_iter_init_vdef (&(ITER), STMT, &(USEVECT), &(DEFVAR)); \
+ !op_iter_done (&(ITER)); \
+ op_iter_next_vdef (&(USEVECT), &(DEFVAR), &(ITER)))
+
+/* This macro will execute a loop over all the arguments of a PHI which
+ match FLAGS. A use_operand_p is always returned via USEVAR. FLAGS
+ can be either SSA_OP_USE or SSA_OP_VIRTUAL_USES or SSA_OP_ALL_USES. */
+#define FOR_EACH_PHI_ARG(USEVAR, STMT, ITER, FLAGS) \
+ for ((USEVAR) = op_iter_init_phiuse (&(ITER), STMT, FLAGS); \
+ !op_iter_done (&(ITER)); \
+ (USEVAR) = op_iter_next_use (&(ITER)))
+
+
+/* This macro will execute a loop over a stmt, regardless of whether it is
+ a real stmt or a PHI node, looking at the USE nodes matching FLAGS. */
+#define FOR_EACH_PHI_OR_STMT_USE(USEVAR, STMT, ITER, FLAGS) \
+ for ((USEVAR) = (gimple_code (STMT) == GIMPLE_PHI \
+ ? op_iter_init_phiuse (&(ITER), STMT, FLAGS) \
+ : op_iter_init_use (&(ITER), STMT, FLAGS)); \
+ !op_iter_done (&(ITER)); \
+ (USEVAR) = op_iter_next_use (&(ITER)))
+
+/* This macro will execute a loop over a stmt, regardless of whether it is
+ a real stmt or a PHI node, looking at the DEF nodes matching FLAGS. */
+#define FOR_EACH_PHI_OR_STMT_DEF(DEFVAR, STMT, ITER, FLAGS) \
+ for ((DEFVAR) = (gimple_code (STMT) == GIMPLE_PHI \
+ ? op_iter_init_phidef (&(ITER), STMT, FLAGS) \
+ : op_iter_init_def (&(ITER), STMT, FLAGS)); \
+ !op_iter_done (&(ITER)); \
+ (DEFVAR) = op_iter_next_def (&(ITER)))
+
+/* This macro returns an operand in STMT as a tree if it is the ONLY
+ operand matching FLAGS. If there are 0 or more than 1 operand matching
+ FLAGS, then NULL_TREE is returned. */
+#define SINGLE_SSA_TREE_OPERAND(STMT, FLAGS) \
+ single_ssa_tree_operand (STMT, FLAGS)
+
+/* This macro returns an operand in STMT as a use_operand_p if it is the ONLY
+ operand matching FLAGS. If there are 0 or more than 1 operand matching
+ FLAGS, then NULL_USE_OPERAND_P is returned. */
+#define SINGLE_SSA_USE_OPERAND(STMT, FLAGS) \
+ single_ssa_use_operand (STMT, FLAGS)
+
+/* This macro returns an operand in STMT as a def_operand_p if it is the ONLY
+ operand matching FLAGS. If there are 0 or more than 1 operand matching
+ FLAGS, then NULL_DEF_OPERAND_P is returned. */
+#define SINGLE_SSA_DEF_OPERAND(STMT, FLAGS) \
+ single_ssa_def_operand (STMT, FLAGS)
+
+/* This macro returns TRUE if there are no operands matching FLAGS in STMT. */
+#define ZERO_SSA_OPERANDS(STMT, FLAGS) zero_ssa_operands (STMT, FLAGS)
+
+/* This macro counts the number of operands in STMT matching FLAGS. */
+#define NUM_SSA_OPERANDS(STMT, FLAGS) num_ssa_operands (STMT, FLAGS)
+
+#endif /* GCC_TREE_SSA_OPERANDS_H */
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