/* Generate code from to output assembler insns as recognized from rtl.
- Copyright (C) 1987, 1988, 1992, 1994, 1995, 1997, 1998, 1999, 2000
- Free Software Foundation, Inc.
+ Copyright (C) 1987, 1988, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2002,
+ 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC 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 version.
+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.
-GNU CC 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.
+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 GNU CC; 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/>. */
/* This program reads the machine description for the compiler target machine
a. `predicate', an int-valued function, is the match_operand predicate
for this operand.
- b. `constraint' is the constraint for this operand. This exists
- only if register constraints appear in match_operand rtx's.
+ b. `constraint' is the constraint for this operand.
c. `address_p' indicates that the operand appears within ADDRESS
- rtx's. This exists only if there are *no* register constraints
- in the match_operand rtx's.
+ rtx's.
d. `mode' is the machine mode that that operand is supposed to have.
insn_data[24].template to be "clrd %0", and
insn_data[24].n_operands to be 1. */
\f
-#include "hconfig.h"
+#include "bconfig.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
-#include "obstack.h"
#include "errors.h"
#include "gensupport.h"
#define MAX_MAX_OPERANDS 40
-static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-
-static int n_occurrences PARAMS ((int, const char *));
-static const char *strip_whitespace PARAMS ((const char *));
+static int n_occurrences (int, const char *);
+static const char *strip_whitespace (const char *);
/* insns in the machine description are assigned sequential code numbers
that are used by insn-recog.c (produced by genrecog) to communicate
{
struct data *next;
const char *name;
- const char *template;
+ const char *template_code;
int code_number;
int index_number;
+ const char *filename;
+ int lineno;
int n_operands; /* Number of operands this insn recognizes */
int n_dups; /* Number times match_dup appears in pattern */
int n_alternatives; /* Number of alternatives in each constraint */
static struct data *idata, **idata_end = &idata;
\f
-static void output_prologue PARAMS ((void));
-static void output_predicate_decls PARAMS ((void));
-static void output_operand_data PARAMS ((void));
-static void output_insn_data PARAMS ((void));
-static void output_get_insn_name PARAMS ((void));
-static void scan_operands PARAMS ((struct data *, rtx, int, int));
-static int compare_operands PARAMS ((struct operand_data *,
- struct operand_data *));
-static void place_operands PARAMS ((struct data *));
-static void process_template PARAMS ((struct data *, const char *));
-static void validate_insn_alternatives PARAMS ((struct data *));
-static void gen_insn PARAMS ((rtx));
-static void gen_peephole PARAMS ((rtx));
-static void gen_expand PARAMS ((rtx));
-static void gen_split PARAMS ((rtx));
-\f
-const char *
-get_insn_name (index)
- int index;
+static void output_prologue (void);
+static void output_operand_data (void);
+static void output_insn_data (void);
+static void output_get_insn_name (void);
+static void scan_operands (struct data *, rtx, int, int);
+static int compare_operands (struct operand_data *,
+ struct operand_data *);
+static void place_operands (struct data *);
+static void process_template (struct data *, const char *);
+static void validate_insn_alternatives (struct data *);
+static void validate_insn_operands (struct data *);
+static void gen_insn (rtx, int);
+static void gen_peephole (rtx, int);
+static void gen_expand (rtx, int);
+static void gen_split (rtx, int);
+
+#ifdef USE_MD_CONSTRAINTS
+
+struct constraint_data
{
- static char buf[100];
+ struct constraint_data *next_this_letter;
+ int lineno;
+ unsigned int namelen;
+ const char name[1];
+};
- struct data *i, *last_named = NULL;
- for (i = idata; i ; i = i->next)
- {
- if (i->index_number == index)
- return i->name;
- if (i->name)
- last_named = i;
- }
+/* This is a complete list (unlike the one in genpreds.c) of constraint
+ letters and modifiers with machine-independent meaning. The only
+ omission is digits, as these are handled specially. */
+static const char indep_constraints[] = ",=+%*?!#&<>EFVXgimnoprs";
- if (last_named)
- sprintf(buf, "%s+%d", last_named->name, index - last_named->index_number);
- else
- sprintf(buf, "insn %d", index);
+static struct constraint_data *
+constraints_by_letter_table[1 << CHAR_BIT];
- return buf;
-}
+static int mdep_constraint_len (const char *, int, int);
+static void note_constraint (rtx, int);
+
+#else /* !USE_MD_CONSTRAINTS */
+static void check_constraint_len (void);
+static int constraint_len (const char *, int);
+
+#endif /* !USE_MD_CONSTRAINTS */
+
+\f
static void
-output_prologue ()
+output_prologue (void)
{
printf ("/* Generated automatically by the program `genoutput'\n\
-from the machine description file `md'. */\n\n");
+ from the machine description file `md'. */\n\n");
printf ("#include \"config.h\"\n");
printf ("#include \"system.h\"\n");
+ printf ("#include \"coretypes.h\"\n");
+ printf ("#include \"tm.h\"\n");
printf ("#include \"flags.h\"\n");
printf ("#include \"ggc.h\"\n");
printf ("#include \"rtl.h\"\n");
+ printf ("#include \"expr.h\"\n");
+ printf ("#include \"insn-codes.h\"\n");
printf ("#include \"tm_p.h\"\n");
printf ("#include \"function.h\"\n");
printf ("#include \"regs.h\"\n");
printf ("#include \"hard-reg-set.h\"\n");
- printf ("#include \"real.h\"\n");
printf ("#include \"insn-config.h\"\n\n");
printf ("#include \"conditions.h\"\n");
- printf ("#include \"insn-flags.h\"\n");
printf ("#include \"insn-attr.h\"\n\n");
- printf ("#include \"insn-codes.h\"\n\n");
printf ("#include \"recog.h\"\n\n");
printf ("#include \"toplev.h\"\n");
printf ("#include \"output.h\"\n");
-}
-
-
-/* We need to define all predicates used. Keep a list of those we
- have defined so far. There normally aren't very many predicates
- used, so a linked list should be fast enough. */
-
-static void
-output_predicate_decls ()
-{
- struct predicate { const char *name; struct predicate *next; } *predicates = 0;
- register struct operand_data *d;
- struct predicate *p;
-
- for (d = odata; d; d = d->next)
- if (d->predicate && d->predicate[0])
- {
- for (p = predicates; p; p = p->next)
- if (strcmp (p->name, d->predicate) == 0)
- break;
-
- if (p == 0)
- {
- printf ("extern int %s PARAMS ((rtx, enum machine_mode));\n",
- d->predicate);
- p = (struct predicate *) alloca (sizeof (struct predicate));
- p->name = d->predicate;
- p->next = predicates;
- predicates = p;
- }
- }
-
- printf ("\n\n");
+ printf ("#include \"target.h\"\n");
+ printf ("#include \"tm-constrs.h\"\n");
}
static void
-output_operand_data ()
+output_operand_data (void)
{
- register struct operand_data *d;
+ struct operand_data *d;
printf ("\nstatic const struct insn_operand_data operand_data[] = \n{\n");
printf (" %d,\n", d->strict_low);
+ printf (" %d,\n", d->constraint == NULL ? 1 : 0);
+
printf (" %d\n", d->eliminable);
printf(" },\n");
}
static void
-output_insn_data ()
+output_insn_data (void)
{
- register struct data *d;
+ struct data *d;
int name_offset = 0;
int next_name_offset;
const char * last_name = 0;
const char * next_name = 0;
- register struct data *n;
+ struct data *n;
for (n = idata, next_name_offset = 1; n; n = n->next, next_name_offset++)
if (n->name)
break;
}
+ printf ("#if GCC_VERSION >= 2007\n__extension__\n#endif\n");
printf ("\nconst struct insn_data insn_data[] = \n{\n");
for (d = idata; d; d = d->next)
{
+ printf (" /* %s:%d */\n", d->filename, d->lineno);
printf (" {\n");
if (d->name)
switch (d->output_format)
{
case INSN_OUTPUT_FORMAT_NONE:
- printf (" 0,\n");
+ printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
+ printf (" { 0 },\n");
+ printf ("#else\n");
+ printf (" { 0, 0, 0 },\n");
+ printf ("#endif\n");
break;
case INSN_OUTPUT_FORMAT_SINGLE:
- printf (" \"%s\",\n", d->template);
+ {
+ const char *p = d->template_code;
+ char prev = 0;
+
+ printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
+ printf (" { .single =\n");
+ printf ("#else\n");
+ printf (" {\n");
+ printf ("#endif\n");
+ printf (" \"");
+ while (*p)
+ {
+ if (IS_VSPACE (*p) && prev != '\\')
+ {
+ /* Preserve two consecutive \n's or \r's, but treat \r\n
+ as a single newline. */
+ if (*p == '\n' && prev != '\r')
+ printf ("\\n\\\n");
+ }
+ else
+ putchar (*p);
+ prev = *p;
+ ++p;
+ }
+ printf ("\",\n");
+ printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
+ printf (" },\n");
+ printf ("#else\n");
+ printf (" 0, 0 },\n");
+ printf ("#endif\n");
+ }
break;
case INSN_OUTPUT_FORMAT_MULTI:
+ printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
+ printf (" { .multi = output_%d },\n", d->code_number);
+ printf ("#else\n");
+ printf (" { 0, output_%d, 0 },\n", d->code_number);
+ printf ("#endif\n");
+ break;
case INSN_OUTPUT_FORMAT_FUNCTION:
- printf (" (const PTR) output_%d,\n", d->code_number);
+ printf ("#if HAVE_DESIGNATED_INITIALIZERS\n");
+ printf (" { .function = output_%d },\n", d->code_number);
+ printf ("#else\n");
+ printf (" { 0, 0, output_%d },\n", d->code_number);
+ printf ("#endif\n");
break;
default:
- abort ();
+ gcc_unreachable ();
}
if (d->name && d->name[0] != '*')
}
static void
-output_get_insn_name ()
+output_get_insn_name (void)
{
printf ("const char *\n");
- printf ("get_insn_name (code)\n");
- printf (" int code;\n");
+ printf ("get_insn_name (int code)\n");
printf ("{\n");
- printf (" return insn_data[code].name;\n");
+ printf (" if (code == NOOP_MOVE_INSN_CODE)\n");
+ printf (" return \"NOOP_MOVE\";\n");
+ printf (" else\n");
+ printf (" return insn_data[code].name;\n");
printf ("}\n");
}
static int num_dups;
static void
-scan_operands (d, part, this_address_p, this_strict_low)
- struct data *d;
- rtx part;
- int this_address_p;
- int this_strict_low;
+scan_operands (struct data *d, rtx part, int this_address_p,
+ int this_strict_low)
{
- register int i, j;
- register const char *format_ptr;
+ int i, j;
+ const char *format_ptr;
int opno;
if (part == 0)
max_opno = opno;
if (max_opno >= MAX_MAX_OPERANDS)
{
- error ("Too many operands (%d) in definition %s.\n",
- max_opno + 1, get_insn_name (next_index_number));
+ message_with_line (d->lineno,
+ "maximum number of operands exceeded");
+ have_error = 1;
return;
}
if (d->operand[opno].seen)
- error ("Definition %s specified operand number %d more than once.\n",
- get_insn_name (next_index_number), opno);
+ {
+ message_with_line (d->lineno,
+ "repeated operand number %d\n", opno);
+ have_error = 1;
+ }
+
d->operand[opno].seen = 1;
d->operand[opno].mode = GET_MODE (part);
d->operand[opno].strict_low = this_strict_low;
max_opno = opno;
if (max_opno >= MAX_MAX_OPERANDS)
{
- error ("Too many operands (%d) in definition %s.\n",
- max_opno + 1, get_insn_name (next_index_number));
+ message_with_line (d->lineno,
+ "maximum number of operands exceeded");
+ have_error = 1;
return;
}
if (d->operand[opno].seen)
- error ("Definition %s specified operand number %d more than once.\n",
- get_insn_name (next_index_number), opno);
+ {
+ message_with_line (d->lineno,
+ "repeated operand number %d\n", opno);
+ have_error = 1;
+ }
+
d->operand[opno].seen = 1;
d->operand[opno].mode = GET_MODE (part);
d->operand[opno].strict_low = 0;
max_opno = opno;
if (max_opno >= MAX_MAX_OPERANDS)
{
- error ("Too many operands (%d) in definition %s.\n",
- max_opno + 1, get_insn_name (next_index_number));
+ message_with_line (d->lineno,
+ "maximum number of operands exceeded");
+ have_error = 1;
return;
}
if (d->operand[opno].seen)
- error ("Definition %s specified operand number %d more than once.\n",
- get_insn_name (next_index_number), opno);
+ {
+ message_with_line (d->lineno,
+ "repeated operand number %d\n", opno);
+ have_error = 1;
+ }
+
d->operand[opno].seen = 1;
d->operand[opno].mode = GET_MODE (part);
d->operand[opno].strict_low = 0;
case MATCH_OP_DUP:
case MATCH_PAR_DUP:
++num_dups;
- return;
+ break;
case ADDRESS:
scan_operands (d, XEXP (part, 0), 1, 0);
case STRICT_LOW_PART:
scan_operands (d, XEXP (part, 0), 0, 1);
return;
-
+
default:
break;
}
/* Compare two operands for content equality. */
static int
-compare_operands (d0, d1)
- struct operand_data *d0, *d1;
+compare_operands (struct operand_data *d0, struct operand_data *d1)
{
const char *p0, *p1;
find a subsequence that is the same, or allocate a new one at the end. */
static void
-place_operands (d)
- struct data *d;
+place_operands (struct data *d)
{
struct operand_data *od, *od2;
int i;
templates, or C code to generate the assembler code template. */
static void
-process_template (d, template)
- struct data *d;
- const char *template;
+process_template (struct data *d, const char *template_code)
{
- register const char *cp;
- register int i;
+ const char *cp;
+ int i;
/* Templates starting with * contain straight code to be run. */
- if (template[0] == '*')
+ if (template_code[0] == '*')
{
- d->template = 0;
+ d->template_code = 0;
d->output_format = INSN_OUTPUT_FORMAT_FUNCTION;
- printf ("\nstatic const char *output_%d PARAMS ((rtx *, rtx));\n",
- d->code_number);
puts ("\nstatic const char *");
- printf ("output_%d (operands, insn)\n", d->code_number);
- puts (" rtx *operands ATTRIBUTE_UNUSED;");
- puts (" rtx insn ATTRIBUTE_UNUSED;");
+ printf ("output_%d (rtx *operands ATTRIBUTE_UNUSED, rtx insn ATTRIBUTE_UNUSED)\n",
+ d->code_number);
puts ("{");
-
- puts (template + 1);
+ print_rtx_ptr_loc (template_code);
+ puts (template_code + 1);
puts ("}");
}
/* If the assembler code template starts with a @ it is a newline-separated
list of assembler code templates, one for each alternative. */
- else if (template[0] == '@')
+ else if (template_code[0] == '@')
{
- d->template = 0;
+ d->template_code = 0;
d->output_format = INSN_OUTPUT_FORMAT_MULTI;
printf ("\nstatic const char * const output_%d[] = {\n", d->code_number);
- for (i = 0, cp = &template[1]; *cp; )
+ for (i = 0, cp = &template_code[1]; *cp; )
{
- while (*cp == '\n' || *cp == ' ' || *cp== '\t')
+ const char *ep, *sp;
+
+ while (ISSPACE (*cp))
cp++;
printf (" \"");
- while (*cp != '\n' && *cp != '\0')
+
+ for (ep = sp = cp; !IS_VSPACE (*ep) && *ep != '\0'; ++ep)
+ if (!ISSPACE (*ep))
+ sp = ep + 1;
+
+ if (sp != ep)
+ message_with_line (d->lineno,
+ "trailing whitespace in output template");
+
+ while (cp < sp)
{
putchar (*cp);
cp++;
printf ("\",\n");
i++;
}
+ if (i == 1)
+ message_with_line (d->lineno,
+ "'@' is redundant for output template with single alternative");
+ if (i != d->n_alternatives)
+ {
+ message_with_line (d->lineno,
+ "wrong number of alternatives in the output template");
+ have_error = 1;
+ }
printf ("};\n");
}
else
{
- d->template = template;
+ d->template_code = template_code;
d->output_format = INSN_OUTPUT_FORMAT_SINGLE;
}
}
/* Check insn D for consistency in number of constraint alternatives. */
static void
-validate_insn_alternatives (d)
- struct data *d;
+validate_insn_alternatives (struct data *d)
{
- register int n = 0, start;
+ int n = 0, start;
/* Make sure all the operands have the same number of alternatives
in their constraints. Let N be that number. */
for (start = 0; start < d->n_operands; start++)
if (d->operand[start].n_alternatives > 0)
{
- if (n == 0)
+ int len, i;
+ const char *p;
+ char c;
+ int which_alternative = 0;
+ int alternative_count_unsure = 0;
+
+ for (p = d->operand[start].constraint; (c = *p); p += len)
+ {
+#ifdef USE_MD_CONSTRAINTS
+ if (ISSPACE (c) || strchr (indep_constraints, c))
+ len = 1;
+ else if (ISDIGIT (c))
+ {
+ const char *q = p;
+ do
+ q++;
+ while (ISDIGIT (*q));
+ len = q - p;
+ }
+ else
+ len = mdep_constraint_len (p, d->lineno, start);
+#else
+ len = CONSTRAINT_LEN (c, p);
+
+ if (len < 1 || (len > 1 && strchr (",#*+=&%!0123456789", c)))
+ {
+ message_with_line (d->lineno,
+ "invalid length %d for char '%c' in alternative %d of operand %d",
+ len, c, which_alternative, start);
+ len = 1;
+ have_error = 1;
+ }
+#endif
+
+ if (c == ',')
+ {
+ which_alternative++;
+ continue;
+ }
+
+ for (i = 1; i < len; i++)
+ if (p[i] == '\0')
+ {
+ message_with_line (d->lineno,
+ "NUL in alternative %d of operand %d",
+ which_alternative, start);
+ alternative_count_unsure = 1;
+ break;
+ }
+ else if (strchr (",#*", p[i]))
+ {
+ message_with_line (d->lineno,
+ "'%c' in alternative %d of operand %d",
+ p[i], which_alternative, start);
+ alternative_count_unsure = 1;
+ }
+ }
+ if (alternative_count_unsure)
+ have_error = 1;
+ else if (n == 0)
n = d->operand[start].n_alternatives;
else if (n != d->operand[start].n_alternatives)
- error ("wrong number of alternatives in operand %d of insn %s",
- start, get_insn_name (d->index_number));
+ {
+ message_with_line (d->lineno,
+ "wrong number of alternatives in operand %d",
+ start);
+ have_error = 1;
+ }
}
/* Record the insn's overall number of alternatives. */
d->n_alternatives = n;
}
+
+/* Verify that there are no gaps in operand numbers for INSNs. */
+
+static void
+validate_insn_operands (struct data *d)
+{
+ int i;
+
+ for (i = 0; i < d->n_operands; ++i)
+ if (d->operand[i].seen == 0)
+ {
+ message_with_line (d->lineno, "missing operand %d", i);
+ have_error = 1;
+ }
+}
+
+static void
+validate_optab_operands (struct data *d)
+{
+ if (!d->name || d->name[0] == '\0' || d->name[0] == '*')
+ return;
+
+ /* Miscellaneous tests. */
+ if (strncmp (d->name, "cstore", 6) == 0
+ && d->name[strlen (d->name) - 1] == '4'
+ && d->operand[0].mode == VOIDmode)
+ {
+ message_with_line (d->lineno, "missing mode for operand 0 of cstore");
+ have_error = 1;
+ }
+}
\f
/* Look at a define_insn just read. Assign its code number. Record
on idata the template and the number of arguments. If the insn has
a hairy output action, output a function for now. */
static void
-gen_insn (insn)
- rtx insn;
+gen_insn (rtx insn, int lineno)
{
- register struct data *d = (struct data *) xmalloc (sizeof (struct data));
- register int i;
+ struct data *d = XNEW (struct data);
+ int i;
d->code_number = next_code_number;
d->index_number = next_index_number;
+ d->filename = read_rtx_filename;
+ d->lineno = lineno;
if (XSTR (insn, 0)[0])
d->name = XSTR (insn, 0);
else
d->n_operands = max_opno + 1;
d->n_dups = num_dups;
+#ifndef USE_MD_CONSTRAINTS
+ check_constraint_len ();
+#endif
+ validate_insn_operands (d);
validate_insn_alternatives (d);
+ validate_optab_operands (d);
place_operands (d);
- process_template (d, XSTR (insn, 3));
+ process_template (d, XTMPL (insn, 3));
}
\f
/* Look at a define_peephole just read. Assign its code number.
If the insn has a hairy output action, output it now. */
static void
-gen_peephole (peep)
- rtx peep;
+gen_peephole (rtx peep, int lineno)
{
- register struct data *d = (struct data *) xmalloc (sizeof (struct data));
- register int i;
+ struct data *d = XNEW (struct data);
+ int i;
d->code_number = next_code_number;
d->index_number = next_index_number;
+ d->filename = read_rtx_filename;
+ d->lineno = lineno;
d->name = 0;
/* Build up the list in the same order as the insns are seen
validate_insn_alternatives (d);
place_operands (d);
- process_template (d, XSTR (peep, 2));
+ process_template (d, XTMPL (peep, 2));
}
\f
/* Process a define_expand just read. Assign its code number,
only for the purposes of `insn_gen_function'. */
static void
-gen_expand (insn)
- rtx insn;
+gen_expand (rtx insn, int lineno)
{
- register struct data *d = (struct data *) xmalloc (sizeof (struct data));
- register int i;
+ struct data *d = XNEW (struct data);
+ int i;
d->code_number = next_code_number;
d->index_number = next_index_number;
+ d->filename = read_rtx_filename;
+ d->lineno = lineno;
if (XSTR (insn, 0)[0])
d->name = XSTR (insn, 0);
else
d->n_operands = max_opno + 1;
d->n_dups = num_dups;
- d->template = 0;
+ d->template_code = 0;
d->output_format = INSN_OUTPUT_FORMAT_NONE;
validate_insn_alternatives (d);
+ validate_optab_operands (d);
place_operands (d);
}
\f
only for reasons of consistency and to simplify genrecog. */
static void
-gen_split (split)
- rtx split;
+gen_split (rtx split, int lineno)
{
- register struct data *d = (struct data *) xmalloc (sizeof (struct data));
- register int i;
+ struct data *d = XNEW (struct data);
+ int i;
d->code_number = next_code_number;
d->index_number = next_index_number;
+ d->filename = read_rtx_filename;
+ d->lineno = lineno;
d->name = 0;
/* Build up the list in the same order as the insns are seen
d->n_operands = max_opno + 1;
d->n_dups = 0;
d->n_alternatives = 0;
- d->template = 0;
+ d->template_code = 0;
d->output_format = INSN_OUTPUT_FORMAT_NONE;
place_operands (d);
}
-\f
-PTR
-xmalloc (size)
- size_t size;
-{
- register PTR val = (PTR) malloc (size);
-
- if (val == 0)
- fatal ("virtual memory exhausted");
- return val;
-}
-
-PTR
-xrealloc (old, size)
- PTR old;
- size_t size;
-{
- register PTR ptr;
- if (old)
- ptr = (PTR) realloc (old, size);
- else
- ptr = (PTR) malloc (size);
- if (!ptr)
- fatal ("virtual memory exhausted");
- return ptr;
-}
-extern int main PARAMS ((int, char **));
+extern int main (int, char **);
int
-main (argc, argv)
- int argc;
- char **argv;
+main (int argc, char **argv)
{
rtx desc;
progname = "genoutput";
- obstack_init (rtl_obstack);
-
- if (argc <= 1)
- fatal ("No input file name.");
- if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
+ if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
return (FATAL_EXIT_CODE);
output_prologue ();
if (desc == NULL)
break;
- if (GET_CODE (desc) == DEFINE_INSN)
- gen_insn (desc);
- if (GET_CODE (desc) == DEFINE_PEEPHOLE)
- gen_peephole (desc);
- if (GET_CODE (desc) == DEFINE_EXPAND)
- gen_expand (desc);
- if (GET_CODE (desc) == DEFINE_SPLIT
- || GET_CODE (desc) == DEFINE_PEEPHOLE2)
- gen_split (desc);
+ switch (GET_CODE (desc))
+ {
+ case DEFINE_INSN:
+ gen_insn (desc, line_no);
+ break;
+
+ case DEFINE_PEEPHOLE:
+ gen_peephole (desc, line_no);
+ break;
+
+ case DEFINE_EXPAND:
+ gen_expand (desc, line_no);
+ break;
+
+ case DEFINE_SPLIT:
+ case DEFINE_PEEPHOLE2:
+ gen_split (desc, line_no);
+ break;
+
+#ifdef USE_MD_CONSTRAINTS
+ case DEFINE_CONSTRAINT:
+ case DEFINE_REGISTER_CONSTRAINT:
+ case DEFINE_ADDRESS_CONSTRAINT:
+ case DEFINE_MEMORY_CONSTRAINT:
+ note_constraint (desc, line_no);
+ break;
+#endif
+
+ default:
+ break;
+ }
next_index_number++;
}
printf("\n\n");
- output_predicate_decls ();
output_operand_data ();
output_insn_data ();
output_get_insn_name ();
-1 if S is the null string. */
static int
-n_occurrences (c, s)
- int c;
- const char *s;
+n_occurrences (int c, const char *s)
{
int n = 0;
Return a new string. */
static const char *
-strip_whitespace (s)
- const char *s;
+strip_whitespace (const char *s)
{
char *p, *q;
char ch;
if (s == 0)
return 0;
- p = q = xmalloc (strlen (s) + 1);
+ p = q = XNEWVEC (char, strlen (s) + 1);
while ((ch = *s++) != '\0')
if (! ISSPACE (ch))
*p++ = ch;
*p = '\0';
return q;
}
+
+#ifdef USE_MD_CONSTRAINTS
+
+/* Record just enough information about a constraint to allow checking
+ of operand constraint strings above, in validate_insn_alternatives.
+ Does not validate most properties of the constraint itself; does
+ enforce no duplicate names, no overlap with MI constraints, and no
+ prefixes. EXP is the define_*constraint form, LINENO the line number
+ reported by the reader. */
+static void
+note_constraint (rtx exp, int lineno)
+{
+ const char *name = XSTR (exp, 0);
+ unsigned int namelen = strlen (name);
+ struct constraint_data **iter, **slot, *new_cdata;
+
+ /* The 'm' constraint is special here since that constraint letter
+ can be overridden by the back end by defining the
+ TARGET_MEM_CONSTRAINT macro. */
+ if (strchr (indep_constraints, name[0]) && name[0] != 'm')
+ {
+ if (name[1] == '\0')
+ message_with_line (lineno, "constraint letter '%s' cannot be "
+ "redefined by the machine description", name);
+ else
+ message_with_line (lineno, "constraint name '%s' cannot be defined by "
+ "the machine description, as it begins with '%c'",
+ name, name[0]);
+ have_error = 1;
+ return;
+ }
+
+ slot = &constraints_by_letter_table[(unsigned int)name[0]];
+ for (iter = slot; *iter; iter = &(*iter)->next_this_letter)
+ {
+ /* This causes slot to end up pointing to the
+ next_this_letter field of the last constraint with a name
+ of equal or greater length than the new constraint; hence
+ the new constraint will be inserted after all previous
+ constraints with names of the same length. */
+ if ((*iter)->namelen >= namelen)
+ slot = iter;
+
+ if (!strcmp ((*iter)->name, name))
+ {
+ message_with_line (lineno, "redefinition of constraint '%s'", name);
+ message_with_line ((*iter)->lineno, "previous definition is here");
+ have_error = 1;
+ return;
+ }
+ else if (!strncmp ((*iter)->name, name, (*iter)->namelen))
+ {
+ message_with_line (lineno, "defining constraint '%s' here", name);
+ message_with_line ((*iter)->lineno, "renders constraint '%s' "
+ "(defined here) a prefix", (*iter)->name);
+ have_error = 1;
+ return;
+ }
+ else if (!strncmp ((*iter)->name, name, namelen))
+ {
+ message_with_line (lineno, "constraint '%s' is a prefix", name);
+ message_with_line ((*iter)->lineno, "of constraint '%s' "
+ "(defined here)", (*iter)->name);
+ have_error = 1;
+ return;
+ }
+ }
+ new_cdata = XNEWVAR (struct constraint_data, sizeof (struct constraint_data) + namelen);
+ strcpy ((char *)new_cdata + offsetof(struct constraint_data, name), name);
+ new_cdata->namelen = namelen;
+ new_cdata->lineno = lineno;
+ new_cdata->next_this_letter = *slot;
+ *slot = new_cdata;
+}
+
+/* Return the length of the constraint name beginning at position S
+ of an operand constraint string, or issue an error message if there
+ is no such constraint. Does not expect to be called for generic
+ constraints. */
+static int
+mdep_constraint_len (const char *s, int lineno, int opno)
+{
+ struct constraint_data *p;
+
+ p = constraints_by_letter_table[(unsigned int)s[0]];
+
+ if (p)
+ for (; p; p = p->next_this_letter)
+ if (!strncmp (s, p->name, p->namelen))
+ return p->namelen;
+
+ message_with_line (lineno,
+ "error: undefined machine-specific constraint "
+ "at this point: \"%s\"", s);
+ message_with_line (lineno, "note: in operand %d", opno);
+ have_error = 1;
+ return 1; /* safe */
+}
+
+#else
+/* Verify that DEFAULT_CONSTRAINT_LEN is used properly and not
+ tampered with. This isn't bullet-proof, but it should catch
+ most genuine mistakes. */
+static void
+check_constraint_len (void)
+{
+ const char *p;
+ int d;
+
+ for (p = ",#*+=&%!1234567890"; *p; p++)
+ for (d = -9; d < 9; d++)
+ gcc_assert (constraint_len (p, d) == d);
+}
+
+static int
+constraint_len (const char *p, int genoutput_default_constraint_len)
+{
+ /* Check that we still match defaults.h . First we do a generation-time
+ check that fails if the value is not the expected one... */
+ gcc_assert (DEFAULT_CONSTRAINT_LEN (*p, p) == 1);
+ /* And now a compile-time check that should give a diagnostic if the
+ definition doesn't exactly match. */
+#define DEFAULT_CONSTRAINT_LEN(C,STR) 1
+ /* Now re-define DEFAULT_CONSTRAINT_LEN so that we can verify it is
+ being used. */
+#undef DEFAULT_CONSTRAINT_LEN
+#define DEFAULT_CONSTRAINT_LEN(C,STR) \
+ ((C) != *p || STR != p ? -1 : genoutput_default_constraint_len)
+ return CONSTRAINT_LEN (*p, p);
+ /* And set it back. */
+#undef DEFAULT_CONSTRAINT_LEN
+#define DEFAULT_CONSTRAINT_LEN(C,STR) 1
+}
+#endif
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