/* Generate code from machine description to emit insns as rtl.
- Copyright (C) 1987, 88, 91, 94, 95, 97, 98, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1988, 1991, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
+ 2003, 2004 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 2, 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 COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
-#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"
-static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-
-void fatal PVPROTO ((const 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 register_constraints;
+static int max_scratch_opno;
static int insn_code_number;
static int insn_index_number;
/* Data structure for recording the patterns of insns that have CLOBBERs.
- We use this to output a function that adds these CLOBBERs to a
+ We use this to output a function that adds these CLOBBERs to a
previously-allocated PARALLEL expression. */
struct clobber_pat
rtx pattern;
int first_clobber;
struct clobber_pat *next;
+ int has_hard_reg;
} *clobber_list;
/* Records one insn that uses the clobber list. */
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 (rtx);
+static int max_operand_vec (rtx, int);
+static void print_code (RTX_CODE);
+static void gen_exp (rtx, enum rtx_code, char *);
+static void gen_insn (rtx, int);
+static void gen_expand (rtx);
+static void gen_split (rtx);
+static void output_add_clobbers (void);
+static void output_added_clobbers_hard_reg_p (void);
+static void gen_rtx_scratch (rtx, enum rtx_code);
+static void output_peephole2_scratches (rtx);
\f
static void
-max_operand_1 (x)
- rtx x;
+max_operand_1 (rtx x)
{
- register RTX_CODE code;
- register int i;
- register int len;
- register char *fmt;
+ RTX_CODE code;
+ int i;
+ int len;
+ const char *fmt;
if (x == 0)
return;
code = GET_CODE (x);
- if (code == MATCH_OPERAND && XSTR (x, 2) != 0 && *XSTR (x, 2) != '\0')
- register_constraints = 1;
- if (code == MATCH_SCRATCH && XSTR (x, 1) != 0 && *XSTR (x, 1) != '\0')
- register_constraints = 1;
if (code == MATCH_OPERAND || code == MATCH_OPERATOR
|| code == MATCH_PARALLEL)
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);
}
static int
-max_operand_vec (insn, arg)
- rtx insn;
- int arg;
+max_operand_vec (rtx insn, int arg)
{
- register int len = XVECLEN (insn, arg);
- register int i;
+ int len = XVECLEN (insn, arg);
+ int i;
max_opno = -1;
max_dup_opno = -1;
+ max_scratch_opno = -1;
for (i = 0; i < len; i++)
max_operand_1 (XVECEXP (insn, arg, i));
}
\f
static void
-print_code (code)
- RTX_CODE code;
+print_code (RTX_CODE code)
{
- register const char *p1;
+ const char *p1;
for (p1 = GET_RTX_NAME (code); *p1; p1++)
+ putchar (TOUPPER(*p1));
+}
+
+static void
+gen_rtx_scratch (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)
- rtx x;
+gen_exp (rtx x, enum rtx_code subroutine_type, char *used)
{
- register RTX_CODE code;
- register int i;
- register int len;
- register char *fmt;
+ RTX_CODE code;
+ int i;
+ int len;
+ const char *fmt;
if (x == 0)
{
{
case MATCH_OPERAND:
case MATCH_DUP:
+ if (used)
+ {
+ if (used[XINT (x, 0)])
+ {
+ printf ("copy_rtx (operand%d)", XINT (x, 0));
+ return;
+ }
+ used[XINT (x, 0)] = 1;
+ }
printf ("operand%d", XINT (x, 0));
return;
case MATCH_OP_DUP:
- printf ("gen_rtx (GET_CODE (operand%d), ", XINT (x, 0));
+ printf ("gen_rtx_fmt_");
+ for (i = 0; i < XVECLEN (x, 1); i++)
+ printf ("e");
+ printf (" (GET_CODE (operand%d), ", XINT (x, 0));
if (GET_MODE (x) == VOIDmode)
printf ("GET_MODE (operand%d)", XINT (x, 0));
else
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, used);
}
printf (")");
return;
case MATCH_OPERATOR:
- printf ("gen_rtx (GET_CODE (operand%d)", XINT (x, 0));
+ printf ("gen_rtx_fmt_");
+ for (i = 0; i < XVECLEN (x, 2); i++)
+ printf ("e");
+ printf (" (GET_CODE (operand%d)", XINT (x, 0));
printf (", %smode", GET_MODE_NAME (GET_MODE (x)));
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, used);
}
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:
case PC:
printf ("pc_rtx");
return;
+ case CLOBBER:
+ if (REG_P (XEXP (x, 0)))
+ {
+ printf ("gen_hard_reg_clobber (%smode, %i)", GET_MODE_NAME (GET_MODE (XEXP (x, 0))),
+ REGNO (XEXP (x, 0)));
+ return;
+ }
+ break;
case CC0:
printf ("cc0_rtx");
printf ("const1_rtx");
else if (INTVAL (x) == -1)
printf ("constm1_rtx");
+ else if (-MAX_SAVED_CONST_INT <= INTVAL (x)
+ && INTVAL (x) <= MAX_SAVED_CONST_INT)
+ printf ("const_int_rtx[MAX_SAVED_CONST_INT + (%d)]",
+ (int) INTVAL (x));
else if (INTVAL (x) == STORE_FLAG_VALUE)
printf ("const_true_rtx");
else
{
printf ("GEN_INT (");
- printf (HOST_WIDE_INT_PRINT_DEC, INTVAL (x));
+ printf (HOST_WIDE_INT_PRINT_DEC_C, INTVAL (x));
printf (")");
}
return;
case CONST_DOUBLE:
/* These shouldn't be written in MD files. Instead, the appropriate
routines in varasm.c should be called. */
- abort ();
+ gcc_unreachable ();
default:
break;
if (fmt[i] == '0')
break;
printf (",\n\t");
- if (fmt[i] == 'e' || fmt[i] == 'u')
- gen_exp (XEXP (x, i));
- else if (fmt[i] == 'i')
- printf ("%u", XINT (x, i));
- else if (fmt[i] == 's')
- printf ("\"%s\"", XSTR (x, i));
- else if (fmt[i] == 'E')
+ switch (fmt[i])
{
- int j;
- printf ("gen_rtvec (%d", XVECLEN (x, i));
- for (j = 0; j < XVECLEN (x, i); j++)
- {
- printf (",\n\t\t");
- gen_exp (XVECEXP (x, i, j));
- }
- printf (")");
+ case 'e': case 'u':
+ gen_exp (XEXP (x, i), subroutine_type, used);
+ break;
+
+ case 'i':
+ printf ("%u", XINT (x, i));
+ break;
+
+ case 's':
+ printf ("\"%s\"", XSTR (x, i));
+ break;
+
+ case 'E':
+ {
+ int j;
+ printf ("gen_rtvec (%d", XVECLEN (x, i));
+ for (j = 0; j < XVECLEN (x, i); j++)
+ {
+ printf (",\n\t\t");
+ gen_exp (XVECEXP (x, i, j), subroutine_type, used);
+ }
+ printf (")");
+ break;
+ }
+
+ default:
+ gcc_unreachable ();
}
- else
- abort ();
}
printf (")");
-}
+}
\f
/* Generate the `gen_...' function for a DEFINE_INSN. */
static void
-gen_insn (insn)
- rtx insn;
+gen_insn (rtx insn, int lineno)
{
int operands;
- register int i;
+ int i;
/* See if the pattern for this insn ends with a group of CLOBBERs of (hard)
registers or MATCH_SCRATCHes. If so, store away the information for
if (XVEC (insn, 1))
{
+ int has_hard_reg = 0;
+
for (i = XVECLEN (insn, 1) - 1; i > 0; i--)
- if (GET_CODE (XVECEXP (insn, 1, i)) != CLOBBER
- || (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != REG
- && GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != MATCH_SCRATCH))
- break;
+ {
+ if (GET_CODE (XVECEXP (insn, 1, i)) != CLOBBER)
+ break;
+
+ if (REG_P (XEXP (XVECEXP (insn, 1, i), 0)))
+ has_hard_reg = 1;
+ else if (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != MATCH_SCRATCH)
+ break;
+ }
if (i != XVECLEN (insn, 1) - 1)
{
- register struct clobber_pat *p;
- register struct clobber_ent *link
- = (struct clobber_ent *) xmalloc (sizeof (struct clobber_ent));
- register int j;
+ struct clobber_pat *p;
+ struct clobber_ent *link = xmalloc (sizeof (struct clobber_ent));
+ int j;
link->code_number = insn_code_number;
rtx new = XEXP (XVECEXP (insn, 1, j), 0);
/* OLD and NEW are the same if both are to be a SCRATCH
- of the same mode,
+ of the same mode,
or if both are registers of the same mode and number. */
if (! (GET_MODE (old) == GET_MODE (new)
&& ((GET_CODE (old) == MATCH_SCRATCH
&& GET_CODE (new) == MATCH_SCRATCH)
- || (GET_CODE (old) == REG && GET_CODE (new) == REG
+ || (REG_P (old) && REG_P (new)
&& REGNO (old) == REGNO (new)))))
break;
}
-
+
if (j == XVECLEN (insn, 1))
break;
}
if (p == 0)
{
- p = (struct clobber_pat *) xmalloc (sizeof (struct clobber_pat));
-
+ p = xmalloc (sizeof (struct clobber_pat));
+
p->insns = 0;
p->pattern = insn;
p->first_clobber = i + 1;
p->next = clobber_list;
+ p->has_hard_reg = has_hard_reg;
clobber_list = p;
}
if (XSTR (insn, 0)[0] == 0 || XSTR (insn, 0)[0] == '*')
return;
- /* Find out how many operands this function has,
- and also whether any of them have register constraints. */
- register_constraints = 0;
+ printf ("/* %s:%d */\n", read_rtx_filename, lineno);
+
+ /* Find out how many operands this function has. */
operands = max_operand_vec (insn, 1);
if (max_dup_opno >= operands)
fatal ("match_dup operand number has no match_operand");
/* 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 (operands)
+ for (i = 0; i < operands; i++)
+ if (i)
+ printf (",\n\trtx operand%d ATTRIBUTE_UNUSED", i);
+ else
+ printf ("rtx operand%d ATTRIBUTE_UNUSED", i);
+ else
+ printf ("void");
printf (")\n");
- for (i = 0; i < operands; i++)
- printf (" rtx operand%d;\n", i);
printf ("{\n");
- /* Output code to construct and return the rtl for the instruction body */
+ /* Output code to construct and return the rtl for the instruction body. */
if (XVECLEN (insn, 1) == 1)
{
printf (" return ");
- gen_exp (XVECEXP (insn, 1, 0));
+ gen_exp (XVECEXP (insn, 1, 0), DEFINE_INSN, NULL);
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, NULL);
}
printf ("));\n}\n\n");
}
/* Generate the `gen_...' function for a DEFINE_EXPAND. */
static void
-gen_expand (expand)
- rtx expand;
+gen_expand (rtx expand)
{
int operands;
- register int i;
+ int i;
if (strlen (XSTR (expand, 0)) == 0)
fatal ("define_expand lacks a name");
if (XVEC (expand, 1) == 0)
fatal ("define_expand for %s lacks a pattern", XSTR (expand, 0));
- /* Find out how many operands this function has,
- and also whether any of them have register constraints. */
- register_constraints = 0;
-
+ /* Find out how many operands this function has. */
operands = max_operand_vec (expand, 1);
/* 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 (operands)
+ for (i = 0; i < operands; i++)
+ if (i)
+ printf (",\n\trtx operand%d", i);
+ else
+ printf ("rtx operand%d", i);
+ else
+ printf ("void");
printf (")\n");
- for (i = 0; i < operands; i++)
- printf (" rtx operand%d;\n", i);
printf ("{\n");
/* If we don't have any C code to write, only one insn is being written,
&& XVECLEN (expand, 1) == 1)
{
printf (" return ");
- gen_exp (XVECEXP (expand, 1, 0));
+ gen_exp (XVECEXP (expand, 1, 0), DEFINE_EXPAND, NULL);
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 ATTRIBUTE_UNUSED;\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. */
+ print_rtx_ptr_loc (XSTR (expand, 3));
printf ("%s\n", XSTR (expand, 3));
/* Output code to copy the arguments back out of `operands'
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.
rtx next = XVECEXP (expand, 1, i);
if ((GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC)
|| (GET_CODE (next) == PARALLEL
- && GET_CODE (XVECEXP (next, 0, 0)) == SET
- && GET_CODE (SET_DEST (XVECEXP (next, 0, 0))) == PC)
+ && ((GET_CODE (XVECEXP (next, 0, 0)) == SET
+ && GET_CODE (SET_DEST (XVECEXP (next, 0, 0))) == PC)
+ || GET_CODE (XVECEXP (next, 0, 0)) == RETURN))
|| GET_CODE (next) == RETURN)
printf (" emit_jump_insn (");
else if ((GET_CODE (next) == SET && GET_CODE (SET_SRC (next)) == CALL)
|| (GET_CODE (next) == PARALLEL
&& GET_CODE (XVECEXP (next, 0, 0)) == CALL))
printf (" emit_call_insn (");
- else if (GET_CODE (next) == CODE_LABEL)
+ else if (LABEL_P (next))
printf (" emit_label (");
else if (GET_CODE (next) == MATCH_OPERAND
|| GET_CODE (next) == MATCH_DUP
printf (" emit (");
else
printf (" emit_insn (");
- gen_exp (next);
+ gen_exp (next, DEFINE_EXPAND, NULL);
printf (");\n");
if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
&& GET_CODE (SET_SRC (next)) == LABEL_REF)
printf (" emit_barrier ();");
}
- /* Call `gen_sequence' to make a SEQUENCE out of all the
+ /* Call `get_insns' to extract the list of all the
insns emitted within this gen_... function. */
- printf (" _val = gen_sequence ();\n");
+ printf (" _val = get_insns ();\n");
printf (" end_sequence ();\n");
printf (" return _val;\n}\n\n");
}
-/* Like gen_expand, but generates a SEQUENCE. */
+/* Like gen_expand, but generates insns resulting from splitting SPLIT. */
static void
-gen_split (split)
- rtx split;
+gen_split (rtx split)
{
- register int i;
+ int i;
int operands;
+ const char *const name =
+ ((GET_CODE (split) == DEFINE_PEEPHOLE2) ? "peephole2" : "split");
+ const char *unused;
+ char *used;
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;
+ unused = (operands == 0 ? " ATTRIBUTE_UNUSED" : "");
+ used = xcalloc (1, operands);
- /* 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 (rtx, rtx *);\n",
+ name, insn_code_number);
+ printf ("rtx\ngen_%s_%d (rtx curr_insn ATTRIBUTE_UNUSED, rtx *operands%s)\n",
+ name, insn_code_number, unused);
+ }
+ else
+ {
+ printf ("extern rtx gen_split_%d (rtx, rtx *);\n", insn_code_number);
+ printf ("rtx\ngen_split_%d (rtx curr_insn ATTRIBUTE_UNUSED, rtx *operands%s)\n",
+ insn_code_number, unused);
+ }
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
before the actual construction. */
if (XSTR (split, 3))
- printf ("%s\n", XSTR (split, 3));
+ {
+ print_rtx_ptr_loc (XSTR (split, 3));
+ printf ("%s\n", XSTR (split, 3));
+ }
/* Output code to copy the arguments back out of `operands' */
for (i = 0; i < operands; i++)
|| (GET_CODE (next) == PARALLEL
&& GET_CODE (XVECEXP (next, 0, 0)) == CALL))
printf (" emit_call_insn (");
- else if (GET_CODE (next) == CODE_LABEL)
+ else if (LABEL_P (next))
printf (" emit_label (");
else if (GET_CODE (next) == MATCH_OPERAND
|| GET_CODE (next) == MATCH_OPERATOR
printf (" emit (");
else
printf (" emit_insn (");
- gen_exp (next);
+ gen_exp (next, GET_CODE (split), used);
printf (");\n");
if (GET_CODE (next) == SET && GET_CODE (SET_DEST (next)) == PC
&& GET_CODE (SET_SRC (next)) == LABEL_REF)
printf (" emit_barrier ();");
}
- /* Call `gen_sequence' to make a SEQUENCE out of all the
+ /* Call `get_insns' to make a list of all the
insns emitted within this gen_... function. */
- printf (" _val = gen_sequence ();\n");
+ printf (" _val = get_insns ();\n");
printf (" end_sequence ();\n");
printf (" return _val;\n}\n\n");
+
+ free (used);
}
\f
/* Write a function, `add_clobbers', that is given a PARALLEL of sufficient
the end of the vector. */
static void
-output_add_clobbers ()
+output_add_clobbers (void)
{
struct clobber_pat *clobber;
struct clobber_ent *ent;
int i;
- printf ("\n\nvoid\nadd_clobbers (pattern, insn_code_number)\n");
- printf (" rtx pattern;\n int insn_code_number;\n");
+ printf ("\n\nvoid\nadd_clobbers (rtx pattern ATTRIBUTE_UNUSED, int insn_code_number)\n");
printf ("{\n");
printf (" switch (insn_code_number)\n");
printf (" {\n");
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), NULL);
printf (";\n");
}
}
printf (" default:\n");
- printf (" abort ();\n");
+ printf (" gcc_unreachable ();\n");
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. */
+/* Write a function, `added_clobbers_hard_reg_p' that is given an insn_code
+ number that will have clobbers added (as indicated by `recog') and returns
+ 1 if those include a clobber of a hard reg or 0 if all of them just clobber
+ SCRATCH. */
static void
-output_init_mov_optab ()
+output_added_clobbers_hard_reg_p (void)
{
-#ifdef EXTRA_CC_NAMES
- static char *cc_names[] = { EXTRA_CC_NAMES };
- char *p;
- size_t i;
+ struct clobber_pat *clobber;
+ struct clobber_ent *ent;
+ int clobber_p, used;
- printf ("\nvoid\ninit_mov_optab ()\n{\n");
+ printf ("\n\nint\nadded_clobbers_hard_reg_p (int insn_code_number)\n");
+ printf ("{\n");
+ printf (" switch (insn_code_number)\n");
+ printf (" {\n");
- for (i = 0; i < sizeof cc_names / sizeof cc_names[0]; i++)
+ for (clobber_p = 0; clobber_p <= 1; clobber_p++)
{
- 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");
+ used = 0;
+ for (clobber = clobber_list; clobber; clobber = clobber->next)
+ if (clobber->has_hard_reg == clobber_p)
+ for (ent = clobber->insns; ent; ent = ent->next)
+ {
+ printf (" case %d:\n", ent->code_number);
+ used++;
+ }
+
+ if (used)
+ printf (" return %d;\n\n", clobber_p);
}
+ printf (" default:\n");
+ printf (" gcc_unreachable ();\n");
+ printf (" }\n");
printf ("}\n");
-#endif
}
\f
-PTR
-xmalloc (size)
- size_t size;
-{
- register PTR val = (PTR) malloc (size);
+/* Generate code to invoke find_free_register () as needed for the
+ scratch registers used by the peephole2 pattern in SPLIT. */
- if (val == 0)
- fatal ("virtual memory exhausted");
-
- return val;
-}
-
-PTR
-xrealloc (old, size)
- PTR old;
- size_t size;
+static void
+output_peephole2_scratches (rtx split)
{
- register PTR ptr;
- if (old)
- ptr = (PTR) realloc (old, size);
- else
- ptr = (PTR) malloc (size);
- if (!ptr)
- fatal ("virtual memory exhausted");
- return ptr;
-}
+ int i;
+ int insn_nr = 0;
-void
-fatal VPROTO ((const char *format, ...))
-{
-#ifndef ANSI_PROTOTYPES
- const char *format;
-#endif
- va_list ap;
-
- VA_START (ap, format);
-
-#ifndef ANSI_PROTOTYPES
- format = va_arg (ap, const char *);
-#endif
-
- fprintf (stderr, "genemit: ");
- vfprintf (stderr, format, ap);
- va_end (ap);
- fprintf (stderr, "\n");
- exit (FATAL_EXIT_CODE);
-}
+ printf (" HARD_REG_SET _regs_allocated;\n");
+ printf (" CLEAR_HARD_REG_SET (_regs_allocated);\n");
-/* More 'friendly' abort that prints the line and file.
- config.h can #define abort fancy_abort if you like that sort of thing. */
+ for (i = 0; i < XVECLEN (split, 0); i++)
+ {
+ 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)));
-void
-fancy_abort ()
-{
- fatal ("Internal gcc abort.");
+ }
+ else if (GET_CODE (elt) != MATCH_DUP)
+ insn_nr++;
+ }
}
-\f
+
int
-main (argc, argv)
- int argc;
- char **argv;
+main (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_args (argc, argv) != 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 \"coretypes.h\"\n");
+ printf ("#include \"tm.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 \"optabs.h\"\n");
printf ("#include \"real.h\"\n");
printf ("#include \"flags.h\"\n");
printf ("#include \"output.h\"\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 \"reload.h\"\n\n");
- printf ("extern rtx recog_operand[];\n");
- printf ("#define operands emit_operand\n\n");
+ printf ("#include \"resource.h\"\n");
+ printf ("#include \"reload.h\"\n");
+ printf ("#include \"toplev.h\"\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");
+ printf ("#define DONE return (_val = get_insns (), end_sequence (), _val)\n\n");
/* Read the machine description. */
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)
- {
- gen_insn (desc);
- ++insn_code_number;
- }
- if (GET_CODE (desc) == DEFINE_EXPAND)
+ switch (GET_CODE (desc))
{
+ case DEFINE_INSN:
+ gen_insn (desc, line_no);
+ break;
+
+ case DEFINE_EXPAND:
+ printf ("/* %s:%d */\n", read_rtx_filename, line_no);
gen_expand (desc);
- ++insn_code_number;
- }
- if (GET_CODE (desc) == DEFINE_SPLIT)
- {
+ break;
+
+ case DEFINE_SPLIT:
+ printf ("/* %s:%d */\n", read_rtx_filename, line_no);
gen_split (desc);
- ++insn_code_number;
- }
- if (GET_CODE (desc) == DEFINE_PEEPHOLE)
- {
- ++insn_code_number;
+ break;
+
+ case DEFINE_PEEPHOLE2:
+ printf ("/* %s:%d */\n", read_rtx_filename, line_no);
+ gen_split (desc);
+ break;
+
+ default:
+ break;
}
++insn_index_number;
}
- /* Write out the routine to add CLOBBERs to a pattern. */
+ /* Write out the routines to add CLOBBERs to a pattern and say whether they
+ clobber a hard reg. */
output_add_clobbers ();
-
- /* Write the routine to initialize mov_optab for the EXTRA_CC_MODES. */
- output_init_mov_optab ();
+ output_added_clobbers_hard_reg_p ();
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 (int code ATTRIBUTE_UNUSED)
+{
+ return NULL;
}
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