/* Generate from machine description:
-
- some #define configuration flags.
- Copyright (C) 1987, 1991 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1997, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
-#include <stdio.h>
-#include "config.h"
+#include "hconfig.h"
+#include "system.h"
#include "rtl.h"
-#include "obstack.h"
-
-static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
+#include "errors.h"
+#include "gensupport.h"
-extern void free ();
-extern rtx read_rtx ();
/* flags to determine output of machine description dependent #define's. */
static int max_recog_operands; /* Largest operand number seen. */
static int max_dup_operands; /* Largest number of match_dup in any insn. */
static int max_clobbers_per_insn;
-static int register_constraint_flag;
static int have_cc0_flag;
+static int have_cmove_flag;
+static int have_cond_exec_flag;
static int have_lo_sum_flag;
+static int have_peephole_flag;
+static int have_peephole2_flag;
/* Maximum number of insns seen in a split. */
static int max_insns_per_split = 1;
static int clobbers_seen_this_insn;
static int dup_operands_seen_this_insn;
-char *xmalloc ();
-static void fatal ();
-void fancy_abort ();
+static void walk_insn_part PARAMS ((rtx, int, int));
+static void gen_insn PARAMS ((rtx));
+static void gen_expand PARAMS ((rtx));
+static void gen_split PARAMS ((rtx));
+static void gen_peephole PARAMS ((rtx));
/* RECOG_P will be non-zero if this pattern was seen in a context where it will
- be used to recognize, rather than just generate an insn. */
+ be used to recognize, rather than just generate an insn.
+
+ NON_PC_SET_SRC will be non-zero if this pattern was seen in a SET_SRC
+ of a SET whose destination is not (pc). */
static void
-walk_insn_part (part, recog_p)
+walk_insn_part (part, recog_p, non_pc_set_src)
rtx part;
+ int recog_p;
+ int non_pc_set_src;
{
register int i, j;
register RTX_CODE code;
- register char *format_ptr;
+ register const char *format_ptr;
if (part == 0)
return;
case MATCH_OPERAND:
if (XINT (part, 0) > max_recog_operands)
max_recog_operands = XINT (part, 0);
- if (XSTR (part, 2) && *XSTR (part, 2))
- register_constraint_flag = 1;
return;
case MATCH_OP_DUP:
+ case MATCH_PAR_DUP:
++dup_operands_seen_this_insn;
case MATCH_SCRATCH:
case MATCH_PARALLEL:
have_lo_sum_flag = 1;
return;
+ case SET:
+ walk_insn_part (SET_DEST (part), 0, recog_p);
+ walk_insn_part (SET_SRC (part), recog_p,
+ GET_CODE (SET_DEST (part)) != PC);
+ return;
+
+ case IF_THEN_ELSE:
+ /* Only consider this machine as having a conditional move if the
+ two arms of the IF_THEN_ELSE are both MATCH_OPERAND. Otherwise,
+ we have some specific IF_THEN_ELSE construct (like the doz
+ instruction on the RS/6000) that can't be used in the general
+ context we want it for. */
+
+ if (recog_p && non_pc_set_src
+ && GET_CODE (XEXP (part, 1)) == MATCH_OPERAND
+ && GET_CODE (XEXP (part, 2)) == MATCH_OPERAND)
+ have_cmove_flag = 1;
+ break;
+
+ case COND_EXEC:
+ if (recog_p)
+ have_cond_exec_flag = 1;
+ break;
+
case REG: case CONST_INT: case SYMBOL_REF:
case PC:
return;
+
+ default:
+ break;
}
format_ptr = GET_RTX_FORMAT (GET_CODE (part));
{
case 'e':
case 'u':
- walk_insn_part (XEXP (part, i), recog_p);
+ walk_insn_part (XEXP (part, i), recog_p, non_pc_set_src);
break;
case 'E':
if (XVEC (part, i) != NULL)
for (j = 0; j < XVECLEN (part, i); j++)
- walk_insn_part (XVECEXP (part, i, j), recog_p);
+ walk_insn_part (XVECEXP (part, i, j), recog_p, non_pc_set_src);
break;
}
}
dup_operands_seen_this_insn = 0;
if (XVEC (insn, 1) != 0)
for (i = 0; i < XVECLEN (insn, 1); i++)
- walk_insn_part (XVECEXP (insn, 1, i), 1);
+ walk_insn_part (XVECEXP (insn, 1, i), 1, 0);
if (clobbers_seen_this_insn > max_clobbers_per_insn)
max_clobbers_per_insn = clobbers_seen_this_insn;
don't sum across all of them. */
clobbers_seen_this_insn = 0;
- walk_insn_part (XVECEXP (insn, 1, i), 0);
+ walk_insn_part (XVECEXP (insn, 1, i), 0, 0);
if (clobbers_seen_this_insn > max_clobbers_per_insn)
max_clobbers_per_insn = clobbers_seen_this_insn;
/* Look through the patterns that are matched
to compute the maximum operand number. */
for (i = 0; i < XVECLEN (split, 0); i++)
- walk_insn_part (XVECEXP (split, 0, i), 1);
+ walk_insn_part (XVECEXP (split, 0, i), 1, 0);
/* Look at the number of insns this insn could split into. */
if (XVECLEN (split, 2) > max_insns_per_split)
max_insns_per_split = XVECLEN (split, 2);
/* Look through the patterns that are matched
to compute the maximum operand number. */
for (i = 0; i < XVECLEN (peep, 0); i++)
- walk_insn_part (XVECEXP (peep, 0, i), 1);
-}
-\f
-char *
-xmalloc (size)
- unsigned size;
-{
- register char *val = (char *) malloc (size);
-
- if (val == 0)
- fatal ("virtual memory exhausted");
-
- return val;
-}
-
-char *
-xrealloc (ptr, size)
- char *ptr;
- unsigned size;
-{
- char *result = (char *) realloc (ptr, size);
- if (!result)
- fatal ("virtual memory exhausted");
- return result;
-}
-
-static void
-fatal (s, a1, a2)
- char *s;
-{
- fprintf (stderr, "genconfig: ");
- fprintf (stderr, s, a1, a2);
- fprintf (stderr, "\n");
- exit (FATAL_EXIT_CODE);
+ walk_insn_part (XVECEXP (peep, 0, i), 1, 0);
}
-/* More 'friendly' abort that prints the line and file.
- config.h can #define abort fancy_abort if you like that sort of thing. */
+extern int main PARAMS ((int, char **));
-void
-fancy_abort ()
-{
- fatal ("Internal gcc abort.");
-}
-\f
int
main (argc, argv)
int argc;
char **argv;
{
rtx desc;
- FILE *infile;
- register int c;
- obstack_init (rtl_obstack);
+ progname = "genconfig";
if (argc <= 1)
fatal ("No input file name.");
- infile = fopen (argv[1], "r");
- if (infile == 0)
- {
- perror (argv[1]);
- exit (FATAL_EXIT_CODE);
- }
-
- init_rtl ();
+ if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
+ return (FATAL_EXIT_CODE);
printf ("/* Generated automatically by the program `genconfig'\n\
from the machine description file `md'. */\n\n");
while (1)
{
- c = read_skip_spaces (infile);
- if (c == EOF)
+ int line_no, insn_code_number = 0;
+
+ desc = read_md_rtx (&line_no, &insn_code_number);
+ if (desc == NULL)
break;
- ungetc (c, infile);
-
- desc = read_rtx (infile);
- if (GET_CODE (desc) == DEFINE_INSN)
- gen_insn (desc);
- if (GET_CODE (desc) == DEFINE_EXPAND)
- gen_expand (desc);
- if (GET_CODE (desc) == DEFINE_SPLIT)
- gen_split (desc);
- if (GET_CODE (desc) == DEFINE_PEEPHOLE)
- gen_peephole (desc);
+
+ switch (GET_CODE (desc))
+ {
+ case DEFINE_INSN:
+ gen_insn (desc);
+ break;
+
+ case DEFINE_EXPAND:
+ gen_expand (desc);
+ break;
+
+ case DEFINE_SPLIT:
+ gen_split (desc);
+ break;
+
+ case DEFINE_PEEPHOLE2:
+ have_peephole2_flag = 1;
+ gen_split (desc);
+ break;
+
+ case DEFINE_PEEPHOLE:
+ have_peephole_flag = 1;
+ gen_peephole (desc);
+ break;
+
+ default:
+ break;
+ }
}
printf ("\n#define MAX_RECOG_OPERANDS %d\n", max_recog_operands + 1);
/* This is conditionally defined, in case the user writes code which emits
more splits than we can readily see (and knows s/he does it). */
- printf ("#ifndef MAX_INSNS_PER_SPLIT\n#define MAX_INSNS_PER_SPLIT %d\n#endif\n",
- max_insns_per_split);
-
- if (register_constraint_flag)
- printf ("#define REGISTER_CONSTRAINTS\n");
+ printf ("#ifndef MAX_INSNS_PER_SPLIT\n");
+ printf ("#define MAX_INSNS_PER_SPLIT %d\n", max_insns_per_split);
+ printf ("#endif\n");
if (have_cc0_flag)
- printf ("#define HAVE_cc0\n");
+ printf ("#define HAVE_cc0 1\n");
+
+ if (have_cmove_flag)
+ printf ("#define HAVE_conditional_move 1\n");
+
+ if (have_cond_exec_flag)
+ printf ("#define HAVE_conditional_execution 1\n");
if (have_lo_sum_flag)
- printf ("#define HAVE_lo_sum\n");
+ printf ("#define HAVE_lo_sum 1\n");
+
+ if (have_peephole_flag)
+ printf ("#define HAVE_peephole 1\n");
+
+ if (have_peephole2_flag)
+ printf ("#define HAVE_peephole2 1\n");
fflush (stdout);
- exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
- /* NOTREACHED */
- return 0;
+ return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : 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;
}
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