Imported gcc-4.4.3

[msp430-gcc.git] / gcc / genflags.c

diff --git a/gcc/genflags.c b/gcc/genflags.c
index 010ac7066043cc046e39505b917bd5c2ec7092ea..b2c878d0594219c7753c1532c2c5ada4d6fad6fb 100644 (file)
--- a/gcc/genflags.c
+++ b/gcc/genflags.c
@@ -1,14 +1,14 @@
 /* Generate from machine description:
    - some flags HAVE_... saying which simple standard instructions are
    available for this machine.
 /* Generate from machine description:
    - some flags HAVE_... saying which simple standard instructions are
    available for this machine.

-   Copyright (C) 1987, 1991, 1995, 1998,
-   1999, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1991, 1995, 1998, 1999, 2000, 2003, 2004, 2007
+   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
 
 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
 version.
 
 GCC is distributed in the hope that it will be useful, but WITHOUT ANY


@@ -17,22 +17,19 @@ 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
 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/>.  */

 
 
 
 

-#include "hconfig.h"
+#include "bconfig.h"

 #include "system.h"
 #include "system.h"

+#include "coretypes.h"
+#include "tm.h"

 #include "rtl.h"
 #include "obstack.h"
 #include "errors.h"
 #include "gensupport.h"
 
 #include "rtl.h"
 #include "obstack.h"
 #include "errors.h"
 #include "gensupport.h"
 

-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-

 /* Obstack to remember insns with.  */
 static struct obstack obstack;
 
 /* Obstack to remember insns with.  */
 static struct obstack obstack;
 


@@ -42,17 +39,16 @@ static int max_id_len;
 /* Max operand encountered in a scan over some insn.  */
 static int max_opno;
 
 /* Max operand encountered in a scan over some insn.  */
 static int max_opno;
 

-static void max_operand_1      PARAMS ((rtx));
-static int num_operands                PARAMS ((rtx));
-static void gen_proto          PARAMS ((rtx));
-static void gen_macro          PARAMS ((const char *, int, int));
-static void gen_insn           PARAMS ((rtx));
+static void max_operand_1 (rtx);
+static int num_operands (rtx);
+static void gen_proto (rtx);
+static void gen_macro (const char *, int, int);
+static void gen_insn (rtx);

 
 /* Count the number of match_operand's found.  */
 
 static void
 
 /* Count the number of match_operand's found.  */
 
 static void

-max_operand_1 (x)
-     rtx x;
+max_operand_1 (rtx x)

 {
   RTX_CODE code;
   int i;
 {
   RTX_CODE code;
   int i;


@@ -84,8 +80,7 @@ max_operand_1 (x)
 }
 
 static int
 }
 
 static int

-num_operands (insn)
-     rtx insn;
+num_operands (rtx insn)

 {
   int len = XVECLEN (insn, 1);
   int i;
 {
   int len = XVECLEN (insn, 1);
   int i;


@@ -102,16 +97,12 @@ num_operands (insn)
    of arguments it takes.  Any missing arguments are assumed to be at
    the end.  */
 static void
    of arguments it takes.  Any missing arguments are assumed to be at
    the end.  */
 static void

-gen_macro (name, real, expect)
-     const char *name;
-     int real, expect;
+gen_macro (const char *name, int real, int expect)

 {
   int i;
 
 {
   int i;
 

-  if (real > expect)
-    abort ();
-  if (real == 0)
-    abort ();
+  gcc_assert (real <= expect);
+  gcc_assert (real);

 
   /* #define GEN_CALL(A, B, C, D) gen_call((A), (B)) */
   fputs ("#define GEN_", stdout);
 
   /* #define GEN_CALL(A, B, C, D) gen_call((A), (B)) */
   fputs ("#define GEN_", stdout);


@@ -128,14 +119,17 @@ gen_macro (name, real, expect)
   printf ("(%c))\n", i + 'A');
 }
 
   printf ("(%c))\n", i + 'A');
 }
 

-/* Print out prototype information for a function.  */
+/* Print out prototype information for a generator function.  If the
+   insn pattern has been elided, print out a dummy generator that
+   does nothing.  */

 
 static void
 
 static void

-gen_proto (insn)
-     rtx insn;
+gen_proto (rtx insn)

 {
   int num = num_operands (insn);
 {
   int num = num_operands (insn);

+  int i;

   const char *name = XSTR (insn, 0);
   const char *name = XSTR (insn, 0);

+  int truth = maybe_eval_c_test (XSTR (insn, 2));

 
   /* Many md files don't refer to the last two operands passed to the
      call patterns.  This means their generator functions will be two
 
   /* Many md files don't refer to the last two operands passed to the
      call patterns.  This means their generator functions will be two


@@ -156,29 +150,49 @@ gen_proto (insn)
        gen_macro (name, num, 5);
     }
 
        gen_macro (name, num, 5);
     }
 

-  printf ("extern struct rtx_def *gen_%-*s PARAMS ((", max_id_len, name);
+  if (truth != 0)
+    printf ("extern rtx        gen_%-*s (", max_id_len, name);
+  else
+    printf ("static inline rtx gen_%-*s (", max_id_len, name);

 
   if (num == 0)
 
   if (num == 0)

-    printf ("void");
+    fputs ("void", stdout);

   else
     {
   else
     {

-      while (num-- > 1)
-       printf ("struct rtx_def *, ");
+      for (i = 1; i < num; i++)
+       fputs ("rtx, ", stdout);

 
 

-      printf ("struct rtx_def *");
+      fputs ("rtx", stdout);

     }
 
     }
 

-  printf ("));\n");
+  puts (");");
+
+  /* Some back ends want to take the address of generator functions,
+     so we cannot simply use #define for these dummy definitions.  */
+  if (truth == 0)
+    {
+      printf ("static inline rtx\ngen_%s", name);
+      if (num > 0)
+       {
+         putchar ('(');
+         for (i = 0; i < num-1; i++)
+           printf ("rtx ARG_UNUSED (%c), ", 'a' + i);
+         printf ("rtx ARG_UNUSED (%c))\n", 'a' + i);
+       }
+      else
+       puts ("(void)");
+      puts ("{\n  return 0;\n}");
+    }

 
 }
 
 static void
 
 }
 
 static void

-gen_insn (insn)
-     rtx insn;
+gen_insn (rtx insn)

 {
   const char *name = XSTR (insn, 0);
   const char *p;
   int len;
 {
   const char *name = XSTR (insn, 0);
   const char *p;
   int len;

+  int truth = maybe_eval_c_test (XSTR (insn, 2));

 
   /* Don't mention instructions whose names are the null string
      or begin with '*'.  They are in the machine description just
 
   /* Don't mention instructions whose names are the null string
      or begin with '*'.  They are in the machine description just


@@ -191,33 +205,30 @@ gen_insn (insn)
   if (len > max_id_len)
     max_id_len = len;
 
   if (len > max_id_len)
     max_id_len = len;
 

-  printf ("#define HAVE_%s ", name);
-  if (strlen (XSTR (insn, 2)) == 0)
-    printf ("1\n");
+  if (truth == 0)
+    /* Emit nothing.  */;
+  else if (truth == 1)
+    printf ("#define HAVE_%s 1\n", name);

   else
     {
       /* Write the macro definition, putting \'s at the end of each line,
         if more than one.  */
   else
     {
       /* Write the macro definition, putting \'s at the end of each line,
         if more than one.  */

-      printf ("(");
+      printf ("#define HAVE_%s (", name);

       for (p = XSTR (insn, 2); *p; p++)
        {
          if (IS_VSPACE (*p))
       for (p = XSTR (insn, 2); *p; p++)
        {
          if (IS_VSPACE (*p))

-           printf (" \\\n");
+           fputs (" \\\n", stdout);

          else
          else

-           printf ("%c", *p);
+           putchar (*p);

        }
        }

-      printf (")\n");
+      fputs (")\n", stdout);

     }
 
   obstack_grow (&obstack, &insn, sizeof (rtx));
 }
 
     }
 
   obstack_grow (&obstack, &insn, sizeof (rtx));
 }
 

-extern int main PARAMS ((int, char **));
-

 int
 int

-main (argc, argv)
-     int argc;
-     char **argv;
+main (int argc, char **argv)

 {
   rtx desc;
   rtx dummy;
 {
   rtx desc;
   rtx dummy;


@@ -227,12 +238,13 @@ main (argc, argv)
   progname = "genflags";
   obstack_init (&obstack);
 
   progname = "genflags";
   obstack_init (&obstack);
 

-  if (argc <= 1)
-    fatal ("no input file name");
+  /* We need to see all the possibilities.  Elided insns may have
+     direct calls to their generators in C code.  */
+  insn_elision = 0;

 
   if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
     return (FATAL_EXIT_CODE);
 
   if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
     return (FATAL_EXIT_CODE);

-  
+

   puts ("/* Generated automatically by the program `genflags'");
   puts ("   from the machine description file `md'.  */\n");
   puts ("#ifndef GCC_INSN_FLAGS_H");
   puts ("/* Generated automatically by the program `genflags'");
   puts ("   from the machine description file `md'.  */\n");
   puts ("#ifndef GCC_INSN_FLAGS_H");


@@ -254,9 +266,8 @@ main (argc, argv)
   /* Print out the prototypes now.  */
   dummy = (rtx) 0;
   obstack_grow (&obstack, &dummy, sizeof (rtx));
   /* Print out the prototypes now.  */
   dummy = (rtx) 0;
   obstack_grow (&obstack, &dummy, sizeof (rtx));

-  insns = (rtx *) obstack_finish (&obstack);
+  insns = XOBFINISH (&obstack, rtx *);

 
 

-  printf ("struct rtx_def;\n");

   for (insn_ptr = insns; *insn_ptr; insn_ptr++)
     gen_proto (*insn_ptr);
 
   for (insn_ptr = insns; *insn_ptr; insn_ptr++)
     gen_proto (*insn_ptr);
 


@@ -267,11 +278,3 @@ main (argc, argv)
 
   return SUCCESS_EXIT_CODE;
 }
 
   return SUCCESS_EXIT_CODE;
 }

-
-/* Define this so we can link with print-rtl.o to get debug_rtx function.  */
-const char *
-get_insn_name (code)
-     int code ATTRIBUTE_UNUSED;
-{
-  return NULL;
-}