/* Generate code from machine description to emit insns as rtl.
- Copyright (C) 1987, 88, 91, 94, 95, 97, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1988, 1991, 1994, 1995, 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
-
-char *xmalloc PROTO((unsigned));
-static void fatal PVPROTO ((char *, ...))
- ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
-void fancy_abort PROTO((void)) ATTRIBUTE_NORETURN;
-
-/* Define this so we can link with print-rtl.o to get debug_rtx function. */
-char **insn_name_ptr = 0;
static int max_opno;
static int max_dup_opno;
+static int max_scratch_opno;
static int register_constraints;
static int insn_code_number;
static int insn_index_number;
struct clobber_ent *next;
};
-static void max_operand_1 PROTO((rtx));
-static int max_operand_vec PROTO((rtx, int));
-static void print_code PROTO((RTX_CODE));
-static void gen_exp PROTO((rtx));
-static void gen_insn PROTO((rtx));
-static void gen_expand PROTO((rtx));
-static void gen_split PROTO((rtx));
-static void output_add_clobbers PROTO((void));
-static void output_init_mov_optab PROTO((void));
+static void max_operand_1 PARAMS ((rtx));
+static int max_operand_vec PARAMS ((rtx, int));
+static void print_code PARAMS ((RTX_CODE));
+static void gen_exp PARAMS ((rtx, enum rtx_code));
+static void gen_insn PARAMS ((rtx));
+static void gen_expand PARAMS ((rtx));
+static void gen_split PARAMS ((rtx));
+static void output_add_clobbers PARAMS ((void));
+static void gen_rtx_scratch PARAMS ((rtx, enum rtx_code));
+static void output_peephole2_scratches PARAMS ((rtx));
\f
static void
register RTX_CODE code;
register int i;
register int len;
- register char *fmt;
+ register const char *fmt;
if (x == 0)
return;
max_opno = MAX (max_opno, XINT (x, 0));
if (code == MATCH_DUP || code == MATCH_OP_DUP || code == MATCH_PAR_DUP)
max_dup_opno = MAX (max_dup_opno, XINT (x, 0));
+ if (code == MATCH_SCRATCH)
+ max_scratch_opno = MAX (max_scratch_opno, XINT (x, 0));
fmt = GET_RTX_FORMAT (code);
len = GET_RTX_LENGTH (code);
max_opno = -1;
max_dup_opno = -1;
+ max_scratch_opno = -1;
for (i = 0; i < len; i++)
max_operand_1 (XVECEXP (insn, arg, i));
print_code (code)
RTX_CODE code;
{
- register char *p1;
+ register const char *p1;
for (p1 = GET_RTX_NAME (code); *p1; p1++)
+ putchar (TOUPPER(*p1));
+}
+
+static void
+gen_rtx_scratch (x, subroutine_type)
+ rtx x;
+ enum rtx_code subroutine_type;
+{
+ if (subroutine_type == DEFINE_PEEPHOLE2)
{
- if (*p1 >= 'a' && *p1 <= 'z')
- putchar (*p1 + 'A' - 'a');
- else
- putchar (*p1);
+ printf ("operand%d", XINT (x, 0));
+ }
+ else
+ {
+ printf ("gen_rtx_SCRATCH (%smode)", GET_MODE_NAME (GET_MODE (x)));
}
}
substituting any operand references appearing within. */
static void
-gen_exp (x)
+gen_exp (x, subroutine_type)
rtx x;
+ enum rtx_code subroutine_type;
{
register RTX_CODE code;
register int i;
register int len;
- register char *fmt;
+ register const char *fmt;
if (x == 0)
{
for (i = 0; i < XVECLEN (x, 1); i++)
{
printf (",\n\t\t");
- gen_exp (XVECEXP (x, 1, i));
+ gen_exp (XVECEXP (x, 1, i), subroutine_type);
}
printf (")");
return;
for (i = 0; i < XVECLEN (x, 2); i++)
{
printf (",\n\t\t");
- gen_exp (XVECEXP (x, 2, i));
+ gen_exp (XVECEXP (x, 2, i), subroutine_type);
}
printf (")");
return;
return;
case MATCH_SCRATCH:
- printf ("gen_rtx_SCRATCH (%smode)", GET_MODE_NAME (GET_MODE (x)));
+ gen_rtx_scratch (x, subroutine_type);
return;
case ADDRESS:
break;
printf (",\n\t");
if (fmt[i] == 'e' || fmt[i] == 'u')
- gen_exp (XEXP (x, i));
+ gen_exp (XEXP (x, i), subroutine_type);
else if (fmt[i] == 'i')
printf ("%u", XINT (x, i));
else if (fmt[i] == 's')
for (j = 0; j < XVECLEN (x, i); j++)
{
printf (",\n\t\t");
- gen_exp (XVECEXP (x, i, j));
+ gen_exp (XVECEXP (x, i, j), subroutine_type);
}
printf (")");
}
/* Output the function name and argument declarations. */
printf ("rtx\ngen_%s (", XSTR (insn, 0));
for (i = 0; i < operands; i++)
- printf (i ? ", operand%d" : "operand%d", i);
+ if (i)
+ printf (", operand%d", i);
+ else
+ printf ("operand%d", i);
printf (")\n");
for (i = 0; i < operands; i++)
printf (" rtx operand%d;\n", i);
if (XVECLEN (insn, 1) == 1)
{
printf (" return ");
- gen_exp (XVECEXP (insn, 1, 0));
+ gen_exp (XVECEXP (insn, 1, 0), DEFINE_INSN);
printf (";\n}\n\n");
}
else
{
- printf (" return gen_rtx_PARALLEL (VOIDmode, gen_rtvec (%d", XVECLEN (insn, 1));
+ printf (" return gen_rtx_PARALLEL (VOIDmode, gen_rtvec (%d",
+ XVECLEN (insn, 1));
+
for (i = 0; i < XVECLEN (insn, 1); i++)
{
printf (",\n\t\t");
- gen_exp (XVECEXP (insn, 1, i));
+ gen_exp (XVECEXP (insn, 1, i), DEFINE_INSN);
}
printf ("));\n}\n\n");
}
/* Output the function name and argument declarations. */
printf ("rtx\ngen_%s (", XSTR (expand, 0));
for (i = 0; i < operands; i++)
- printf (i ? ", operand%d" : "operand%d", i);
+ if (i)
+ printf (", operand%d", i);
+ else
+ printf ("operand%d", i);
printf (")\n");
for (i = 0; i < operands; i++)
printf (" rtx operand%d;\n", i);
&& XVECLEN (expand, 1) == 1)
{
printf (" return ");
- gen_exp (XVECEXP (expand, 1, 0));
+ gen_exp (XVECEXP (expand, 1, 0), DEFINE_EXPAND);
printf (";\n}\n\n");
return;
}
make a local variable. */
for (i = operands; i <= max_dup_opno; i++)
printf (" rtx operand%d;\n", i);
- if (operands > 0 || max_dup_opno >= 0)
- printf (" rtx operands[%d];\n", MAX (operands, max_dup_opno + 1));
+ for (; i <= max_scratch_opno; i++)
+ printf (" rtx operand%d;\n", i);
printf (" rtx _val = 0;\n");
printf (" start_sequence ();\n");
So copy the operand values there before executing it. */
if (XSTR (expand, 3) && *XSTR (expand, 3))
{
+ printf (" {\n");
+ if (operands > 0 || max_dup_opno >= 0 || max_scratch_opno >= 0)
+ printf (" rtx operands[%d];\n",
+ MAX (operands, MAX (max_scratch_opno, max_dup_opno) + 1));
/* Output code to copy the arguments into `operands'. */
for (i = 0; i < operands; i++)
- printf (" operands[%d] = operand%d;\n", i, i);
+ printf (" operands[%d] = operand%d;\n", i, i);
/* Output the special code to be executed before the sequence
is generated. */
if (XVEC (expand, 1) != 0)
{
for (i = 0; i < operands; i++)
- printf (" operand%d = operands[%d];\n", i, i);
+ printf (" operand%d = operands[%d];\n", i, i);
for (; i <= max_dup_opno; i++)
- printf (" operand%d = operands[%d];\n", i, i);
+ printf (" operand%d = operands[%d];\n", i, i);
+ for (; i <= max_scratch_opno; i++)
+ printf (" operand%d = operands[%d];\n", i, i);
}
+ printf (" }\n");
}
/* Output code to construct the rtl for the instruction bodies.
else if (GET_CODE (next) == CODE_LABEL)
printf (" emit_label (");
else if (GET_CODE (next) == MATCH_OPERAND
+ || GET_CODE (next) == MATCH_DUP
|| GET_CODE (next) == MATCH_OPERATOR
- || GET_CODE (next) == MATCH_PARALLEL
|| GET_CODE (next) == MATCH_OP_DUP
- || GET_CODE (next) == MATCH_DUP
+ || GET_CODE (next) == MATCH_PARALLEL
+ || GET_CODE (next) == MATCH_PAR_DUP
|| GET_CODE (next) == PARALLEL)
printf (" emit (");
else
printf (" emit_insn (");
- gen_exp (next);
+ gen_exp (next, DEFINE_EXPAND);
printf (");\n");
if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
&& GET_CODE (SET_SRC (next)) == LABEL_REF)
{
register int i;
int operands;
+ const char *name = "split";
+
+ if (GET_CODE (split) == DEFINE_PEEPHOLE2)
+ name = "peephole2";
if (XVEC (split, 0) == 0)
- fatal ("define_split (definition %d) lacks a pattern", insn_index_number);
+ fatal ("define_%s (definition %d) lacks a pattern", name,
+ insn_index_number);
else if (XVEC (split, 2) == 0)
- fatal ("define_split (definition %d) lacks a replacement pattern",
+ fatal ("define_%s (definition %d) lacks a replacement pattern", name,
insn_index_number);
/* Find out how many operands this function has. */
max_operand_vec (split, 2);
- operands = MAX (max_opno, max_dup_opno) + 1;
+ operands = MAX (max_opno, MAX (max_dup_opno, max_scratch_opno)) + 1;
- /* Output the function name and argument declarations. */
- printf ("rtx\ngen_split_%d (operands)\n rtx *operands;\n",
- insn_code_number);
+ /* Output the prototype, function name and argument declarations. */
+ if (GET_CODE (split) == DEFINE_PEEPHOLE2)
+ {
+ printf ("extern rtx gen_%s_%d PARAMS ((rtx, rtx *));\n",
+ name, insn_code_number);
+ printf ("rtx\ngen_%s_%d (curr_insn, operands)\n\
+ rtx curr_insn ATTRIBUTE_UNUSED;\n\
+ rtx *operands;\n",
+ name, insn_code_number);
+ }
+ else
+ {
+ printf ("extern rtx gen_split_%d PARAMS ((rtx *));\n", insn_code_number);
+ printf ("rtx\ngen_%s_%d (operands)\n rtx *operands;\n", name,
+ insn_code_number);
+ }
printf ("{\n");
/* Declare all local variables. */
for (i = 0; i < operands; i++)
printf (" rtx operand%d;\n", i);
printf (" rtx _val = 0;\n");
+
+ if (GET_CODE (split) == DEFINE_PEEPHOLE2)
+ output_peephole2_scratches (split);
+
printf (" start_sequence ();\n");
/* The fourth operand of DEFINE_SPLIT is some code to be executed
printf (" emit (");
else
printf (" emit_insn (");
- gen_exp (next);
+ gen_exp (next, GET_CODE (split));
printf (");\n");
if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
&& GET_CODE (SET_SRC (next)) == LABEL_REF)
for (i = clobber->first_clobber; i < XVECLEN (clobber->pattern, 1); i++)
{
printf (" XVECEXP (pattern, 0, %d) = ", i);
- gen_exp (XVECEXP (clobber->pattern, 1, i));
+ gen_exp (XVECEXP (clobber->pattern, 1, i),
+ GET_CODE (clobber->pattern));
printf (";\n");
}
printf ("}\n");
}
\f
-/* Write a function, init_mov_optab, that is called to set up entries
- in mov_optab for EXTRA_CC_MODES. */
+/* Generate code to invoke find_free_register () as needed for the
+ scratch registers used by the peephole2 pattern in SPLIT. */
static void
-output_init_mov_optab ()
+output_peephole2_scratches (split)
+ rtx split;
{
-#ifdef EXTRA_CC_NAMES
- static char *cc_names[] = { EXTRA_CC_NAMES };
- char *p;
- size_t i;
+ int i;
+ int insn_nr = 0;
- printf ("\nvoid\ninit_mov_optab ()\n{\n");
+ printf (" HARD_REG_SET _regs_allocated;\n");
+ printf (" CLEAR_HARD_REG_SET (_regs_allocated);\n");
- for (i = 0; i < sizeof cc_names / sizeof cc_names[0]; i++)
+ for (i = 0; i < XVECLEN (split, 0); i++)
{
- printf ("#ifdef HAVE_mov");
- for (p = cc_names[i]; *p; p++)
- printf ("%c", *p >= 'A' && *p <= 'Z' ? *p - 'A' + 'a' : *p);
- printf ("\n");
- printf (" if (HAVE_mov");
- for (p = cc_names[i]; *p; p++)
- printf ("%c", *p >= 'A' && *p <= 'Z' ? *p - 'A' + 'a' : *p);
- printf (")\n");
- printf (" mov_optab->handlers[(int) %smode].insn_code = CODE_FOR_mov",
- cc_names[i]);
- for (p = cc_names[i]; *p; p++)
- printf ("%c", *p >= 'A' && *p <= 'Z' ? *p - 'A' + 'a' : *p);
- printf (";\n#endif\n");
- }
-
- printf ("}\n");
-#endif
-}
-\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;
-}
+ rtx elt = XVECEXP (split, 0, i);
+ if (GET_CODE (elt) == MATCH_SCRATCH)
+ {
+ int last_insn_nr = insn_nr;
+ int cur_insn_nr = insn_nr;
+ int j;
+ for (j = i + 1; j < XVECLEN (split, 0); j++)
+ if (GET_CODE (XVECEXP (split, 0, j)) == MATCH_DUP)
+ {
+ if (XINT (XVECEXP (split, 0, j), 0) == XINT (elt, 0))
+ last_insn_nr = cur_insn_nr;
+ }
+ else if (GET_CODE (XVECEXP (split, 0, j)) != MATCH_SCRATCH)
+ cur_insn_nr++;
+
+ printf (" if ((operands[%d] = peep2_find_free_register (%d, %d, \"%s\", %smode, &_regs_allocated)) == NULL_RTX)\n\
+ return NULL;\n",
+ XINT (elt, 0),
+ insn_nr, last_insn_nr,
+ XSTR (elt, 1),
+ GET_MODE_NAME (GET_MODE (elt)));
-static void
-fatal VPROTO ((char *format, ...))
-{
-#ifndef __STDC__
- char *format;
-#endif
- va_list ap;
-
- VA_START (ap, format);
-
-#ifndef __STDC__
- format = va_arg (ap, char *);
-#endif
-
- fprintf (stderr, "genemit: ");
- vfprintf (stderr, format, ap);
- va_end (ap);
- fprintf (stderr, "\n");
- exit (FATAL_EXIT_CODE);
+ }
+ else if (GET_CODE (elt) != MATCH_DUP)
+ insn_nr++;
+ }
}
-/* 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 = "genemit";
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);
/* Assign sequential codes to all entries in the machine description
in parallel with the tables in insn-output.c. */
printf ("#include \"config.h\"\n");
printf ("#include \"system.h\"\n");
printf ("#include \"rtl.h\"\n");
+ printf ("#include \"tm_p.h\"\n");
+ printf ("#include \"function.h\"\n");
printf ("#include \"expr.h\"\n");
printf ("#include \"real.h\"\n");
printf ("#include \"flags.h\"\n");
printf ("#include \"output.h\"\n");
- printf ("#include \"insn-config.h\"\n\n");
- printf ("#include \"insn-flags.h\"\n\n");
- printf ("#include \"insn-codes.h\"\n\n");
+ printf ("#include \"insn-config.h\"\n");
+ printf ("#include \"insn-flags.h\"\n");
+ printf ("#include \"insn-codes.h\"\n");
+ printf ("#include \"hard-reg-set.h\"\n");
+ printf ("#include \"recog.h\"\n");
+ printf ("#include \"resource.h\"\n");
printf ("#include \"reload.h\"\n");
- printf ("extern char *insn_operand_constraint[][MAX_RECOG_OPERANDS];\n\n");
- printf ("extern rtx recog_operand[];\n");
- printf ("#define operands emit_operand\n\n");
+ printf ("#include \"ggc.h\"\n\n");
printf ("#define FAIL return (end_sequence (), _val)\n");
printf ("#define DONE return (_val = gen_sequence (), end_sequence (), _val)\n");
while (1)
{
- c = read_skip_spaces (infile);
- if (c == EOF)
+ int line_no;
+
+ 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)
+ switch (GET_CODE (desc))
{
- gen_insn (desc);
- ++insn_code_number;
- }
- if (GET_CODE (desc) == DEFINE_EXPAND)
- {
- gen_expand (desc);
- ++insn_code_number;
- }
- if (GET_CODE (desc) == DEFINE_SPLIT)
- {
- gen_split (desc);
- ++insn_code_number;
- }
- if (GET_CODE (desc) == DEFINE_PEEPHOLE)
- {
- ++insn_code_number;
- }
+ case DEFINE_INSN:
+ gen_insn (desc);
+ break;
+
+ case DEFINE_EXPAND:
+ gen_expand (desc);
+ break;
+
+ case DEFINE_SPLIT:
+ gen_split (desc);
+ break;
+
+ case DEFINE_PEEPHOLE2:
+ gen_split (desc);
+ break;
+
+ default:
+ break;
+ }
++insn_index_number;
}
/* Write out the routine to add CLOBBERs to a pattern. */
output_add_clobbers ();
- /* Write the routine to initialize mov_optab for the EXTRA_CC_MODES. */
- output_init_mov_optab ();
-
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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