/* Generate from machine description:
- some #define configuration flags.
- Copyright (C) 1987, 1991, 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1997, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
#include "hconfig.h"
#include "system.h"
#include "rtl.h"
-#include "obstack.h"
+#include "errors.h"
+#include "gensupport.h"
-static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-
-/* Define this so we can link with print-rtl.o to get debug_rtx function. */
-char **insn_name_ptr = 0;
/* 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;
+/* Maximum number of input insns for peephole2. */
+static int max_insns_per_peep2;
+
static int clobbers_seen_this_insn;
static int dup_operands_seen_this_insn;
-static void fatal PVPROTO ((char *, ...))
- ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
-void fancy_abort PROTO((void)) ATTRIBUTE_NORETURN;
-
-static void walk_insn_part PROTO((rtx, int, int));
-static void gen_insn PROTO((rtx));
-static void gen_expand PROTO((rtx));
-static void gen_split PROTO((rtx));
-static void gen_peephole PROTO((rtx));
+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));
+static void gen_peephole2 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.
{
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:
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;
for (i = 0; i < XVECLEN (peep, 0); i++)
walk_insn_part (XVECEXP (peep, 0, i), 1, 0);
}
-\f
-PTR
-xmalloc (size)
- size_t size;
-{
- register PTR val = (PTR) malloc (size);
-
- if (val == 0)
- fatal ("virtual memory exhausted");
-
- return val;
-}
-
-PTR
-xrealloc (ptr, size)
- PTR ptr;
- size_t size;
-{
- register PTR result = (PTR) realloc (ptr, size);
- if (!result)
- fatal ("virtual memory exhausted");
- return result;
-}
static void
-fatal VPROTO ((char *format, ...))
+gen_peephole2 (peep)
+ rtx peep;
{
-#ifndef ANSI_PROTOTYPES
- char *format;
-#endif
- va_list ap;
-
- VA_START (ap, format);
-
-#ifndef ANSI_PROTOTYPES
- format = va_arg (ap, char *);
-#endif
-
- fprintf (stderr, "genconfig: ");
- vfprintf (stderr, format, ap);
- va_end (ap);
- fprintf (stderr, "\n");
- exit (FATAL_EXIT_CODE);
-}
+ int i, n;
-/* More 'friendly' abort that prints the line and file.
- config.h can #define abort fancy_abort if you like that sort of thing. */
+ /* Look through the patterns that are matched
+ to compute the maximum operand number. */
+ for (i = XVECLEN (peep, 0) - 1; i >= 0; --i)
+ walk_insn_part (XVECEXP (peep, 0, i), 1, 0);
-void
-fancy_abort ()
-{
- fatal ("Internal gcc abort.");
+ /* Look at the number of insns this insn can be matched from. */
+ for (i = XVECLEN (peep, 0) - 1, n = 0; i >= 0; --i)
+ if (GET_CODE (XVECEXP (peep, 0, i)) != MATCH_DUP
+ && GET_CODE (XVECEXP (peep, 0, i)) != MATCH_SCRATCH)
+ n++;
+ if (n > max_insns_per_peep2)
+ max_insns_per_peep2 = n;
}
-\f
+
+extern int main PARAMS ((int, char **));
+
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");
+ puts ("/* Generated automatically by the program `genconfig'");
+ puts (" from the machine description file `md'. */\n");
+ puts ("#ifndef GCC_INSN_CONFIG_H");
+ puts ("#define GCC_INSN_CONFIG_H\n");
/* Allow at least 10 operands for the sake of asm constructs. */
max_recog_operands = 9; /* We will add 1 later. */
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_peephole2 (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);
-
- printf ("\n#define MAX_DUP_OPERANDS %d\n", max_dup_operands);
+ printf ("#define MAX_RECOG_OPERANDS %d\n", max_recog_operands + 1);
+ printf ("#define MAX_DUP_OPERANDS %d\n", max_dup_operands);
/* 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\n");
+ 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");
- fflush (stdout);
- exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
- /* NOTREACHED */
- return 0;
+ if (have_peephole_flag)
+ printf ("#define HAVE_peephole 1\n");
+
+ if (have_peephole2_flag)
+ {
+ printf ("#define HAVE_peephole2 1\n");
+ printf ("#define MAX_INSNS_PER_PEEP2 %d\n", max_insns_per_peep2);
+ }
+
+ puts("\n#endif /* GCC_INSN_CONFIG_H */");
+
+ if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+ return FATAL_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;
}
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