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-rw-r--r--gcc-4.2.1-5666.3/gcc/genemit.c897
1 files changed, 0 insertions, 897 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/genemit.c b/gcc-4.2.1-5666.3/gcc/genemit.c
deleted file mode 100644
index 79db84e7b..000000000
--- a/gcc-4.2.1-5666.3/gcc/genemit.c
+++ /dev/null
@@ -1,897 +0,0 @@
-/* Generate code from machine description to emit insns as rtl.
- Copyright (C) 1987, 1988, 1991, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
- 2003, 2004, 2005 Free Software Foundation, Inc.
-
-This file is part of GCC.
-
-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.
-
-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 GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
-
-
-#include "bconfig.h"
-#include "system.h"
-#include "coretypes.h"
-#include "tm.h"
-#include "rtl.h"
-#include "errors.h"
-#include "gensupport.h"
-
-
-static int max_opno;
-static int max_dup_opno;
-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
- previously-allocated PARALLEL expression. */
-
-struct clobber_pat
-{
- struct clobber_ent *insns;
- 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
-{
- int code_number; /* Counts only insns. */
- struct clobber_ent *next;
-};
-
-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);
-
-
-static void
-max_operand_1 (rtx x)
-{
- RTX_CODE code;
- int i;
- int len;
- const char *fmt;
-
- if (x == 0)
- return;
-
- code = GET_CODE (x);
-
- 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);
- for (i = 0; i < len; i++)
- {
- if (fmt[i] == 'e' || fmt[i] == 'u')
- max_operand_1 (XEXP (x, i));
- else if (fmt[i] == 'E')
- {
- int j;
- for (j = 0; j < XVECLEN (x, i); j++)
- max_operand_1 (XVECEXP (x, i, j));
- }
- }
-}
-
-static int
-max_operand_vec (rtx insn, int arg)
-{
- 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));
-
- return max_opno + 1;
-}
-
-static void
-print_code (RTX_CODE code)
-{
- 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)
- {
- printf ("operand%d", XINT (x, 0));
- }
- else
- {
- printf ("gen_rtx_SCRATCH (%smode)", GET_MODE_NAME (GET_MODE (x)));
- }
-}
-
-/* Print a C expression to construct an RTX just like X,
- substituting any operand references appearing within. */
-
-static void
-gen_exp (rtx x, enum rtx_code subroutine_type, char *used)
-{
- RTX_CODE code;
- int i;
- int len;
- const char *fmt;
-
- if (x == 0)
- {
- printf ("NULL_RTX");
- return;
- }
-
- code = GET_CODE (x);
-
- switch (code)
- {
- 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_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
- printf ("%smode", GET_MODE_NAME (GET_MODE (x)));
- for (i = 0; i < XVECLEN (x, 1); i++)
- {
- printf (",\n\t\t");
- gen_exp (XVECEXP (x, 1, i), subroutine_type, used);
- }
- printf (")");
- return;
-
- case MATCH_OPERATOR:
- 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), subroutine_type, used);
- }
- printf (")");
- return;
-
- case MATCH_PARALLEL:
- case MATCH_PAR_DUP:
- printf ("operand%d", XINT (x, 0));
- return;
-
- case MATCH_SCRATCH:
- gen_rtx_scratch (x, subroutine_type);
- return;
-
- case ADDRESS:
- fatal ("ADDRESS expression code used in named instruction pattern");
-
- 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");
- return;
-
- case CONST_INT:
- if (INTVAL (x) == 0)
- printf ("const0_rtx");
- else if (INTVAL (x) == 1)
- 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_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. */
- gcc_unreachable ();
-
- default:
- break;
- }
-
- printf ("gen_rtx_");
- print_code (code);
- printf (" (%smode", GET_MODE_NAME (GET_MODE (x)));
-
- fmt = GET_RTX_FORMAT (code);
- len = GET_RTX_LENGTH (code);
- for (i = 0; i < len; i++)
- {
- if (fmt[i] == '0')
- break;
- printf (",\n\t");
- switch (fmt[i])
- {
- 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 ();
- }
- }
- printf (")");
-}
-
-/* Generate the `gen_...' function for a DEFINE_INSN. */
-
-static void
-gen_insn (rtx insn, int lineno)
-{
- int operands;
- 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
- later. */
-
- 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)
- 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)
- {
- struct clobber_pat *p;
- struct clobber_ent *link = XNEW (struct clobber_ent);
- int j;
-
- link->code_number = insn_code_number;
-
- /* See if any previous CLOBBER_LIST entry is the same as this
- one. */
-
- for (p = clobber_list; p; p = p->next)
- {
- if (p->first_clobber != i + 1
- || XVECLEN (p->pattern, 1) != XVECLEN (insn, 1))
- continue;
-
- for (j = i + 1; j < XVECLEN (insn, 1); j++)
- {
- rtx old = XEXP (XVECEXP (p->pattern, 1, j), 0);
- 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,
- 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)
- || (REG_P (old) && REG_P (new)
- && REGNO (old) == REGNO (new)))))
- break;
- }
-
- if (j == XVECLEN (insn, 1))
- break;
- }
-
- if (p == 0)
- {
- p = XNEW (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;
- }
-
- link->next = p->insns;
- p->insns = link;
- }
- }
-
- /* Don't mention instructions whose names are the null string
- or begin with '*'. They are in the machine description just
- to be recognized. */
- if (XSTR (insn, 0)[0] == 0 || XSTR (insn, 0)[0] == '*')
- return;
-
- 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));
- 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");
- printf ("{\n");
-
- /* 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), DEFINE_INSN, NULL);
- printf (";\n}\n\n");
- }
- else
- {
- 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), DEFINE_INSN, NULL);
- }
- printf ("));\n}\n\n");
- }
-}
-
-/* Generate the `gen_...' function for a DEFINE_EXPAND. */
-
-static void
-gen_expand (rtx expand)
-{
- int operands;
- 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. */
- operands = max_operand_vec (expand, 1);
-
- /* Output the function name and argument declarations. */
- printf ("rtx\ngen_%s (", XSTR (expand, 0));
- 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");
- printf ("{\n");
-
- /* If we don't have any C code to write, only one insn is being written,
- and no MATCH_DUPs are present, we can just return the desired insn
- like we do for a DEFINE_INSN. This saves memory. */
- if ((XSTR (expand, 3) == 0 || *XSTR (expand, 3) == '\0')
- && operands > max_dup_opno
- && XVECLEN (expand, 1) == 1)
- {
- printf (" return ");
- gen_exp (XVECEXP (expand, 1, 0), DEFINE_EXPAND, NULL);
- printf (";\n}\n\n");
- return;
- }
-
- /* For each operand referred to only with MATCH_DUPs,
- make a local variable. */
- for (i = operands; i <= max_dup_opno; i++)
- printf (" rtx operand%d;\n", i);
- for (; i <= max_scratch_opno; i++)
- printf (" rtx operand%d ATTRIBUTE_UNUSED;\n", i);
- printf (" rtx _val = 0;\n");
- printf (" start_sequence ();\n");
-
- /* The fourth operand of DEFINE_EXPAND is some code to be executed
- before the actual construction.
- This code expects to refer to `operands'
- just as the output-code in a DEFINE_INSN does,
- but here `operands' is an automatic array.
- 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);
-
- /* 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'
- (unless we aren't going to use them at all). */
- if (XVEC (expand, 1) != 0)
- {
- for (i = 0; i < operands; i++)
- printf (" operand%d = operands[%d];\n", i, i);
- for (; i <= max_dup_opno; 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.
- Use emit_insn to add them to the sequence being accumulated.
- But don't do this if the user's code has set `no_more' nonzero. */
-
- for (i = 0; i < XVECLEN (expand, 1); i++)
- {
- 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)) == RETURN))
- || GET_CODE (next) == RETURN)
- printf (" emit_jump_insn (");
- else if ((GET_CODE (next) == SET && GET_CODE (SET_SRC (next)) == CALL)
- || GET_CODE (next) == CALL
- || (GET_CODE (next) == PARALLEL
- && GET_CODE (XVECEXP (next, 0, 0)) == SET
- && GET_CODE (SET_SRC (XVECEXP (next, 0, 0))) == CALL)
- || (GET_CODE (next) == PARALLEL
- && GET_CODE (XVECEXP (next, 0, 0)) == CALL))
- printf (" emit_call_insn (");
- else if (LABEL_P (next))
- printf (" emit_label (");
- else if (GET_CODE (next) == MATCH_OPERAND
- || GET_CODE (next) == MATCH_DUP
- || GET_CODE (next) == MATCH_OPERATOR
- || GET_CODE (next) == MATCH_OP_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, 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 `get_insns' to extract the list of all the
- insns emitted within this gen_... function. */
-
- printf (" _val = get_insns ();\n");
- printf (" end_sequence ();\n");
- printf (" return _val;\n}\n\n");
-}
-
-/* Like gen_expand, but generates insns resulting from splitting SPLIT. */
-
-static void
-gen_split (rtx split)
-{
- 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_%s (definition %d) lacks a pattern", name,
- insn_index_number);
- else if (XVEC (split, 2) == 0)
- 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 (max_dup_opno, max_scratch_opno)) + 1;
- unused = (operands == 0 ? " ATTRIBUTE_UNUSED" : "");
- used = XCNEWVEC (char, operands);
-
- /* 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))
- {
- 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++)
- printf (" operand%d = operands[%d];\n", i, i);
-
- /* Output code to construct the rtl for the instruction bodies.
- Use emit_insn to add them to the sequence being accumulated.
- But don't do this if the user's code has set `no_more' nonzero. */
-
- for (i = 0; i < XVECLEN (split, 2); i++)
- {
- rtx next = XVECEXP (split, 2, 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 (next) == RETURN)
- printf (" emit_jump_insn (");
- else if ((GET_CODE (next) == SET && GET_CODE (SET_SRC (next)) == CALL)
- || GET_CODE (next) == CALL
- || (GET_CODE (next) == PARALLEL
- && GET_CODE (XVECEXP (next, 0, 0)) == SET
- && GET_CODE (SET_SRC (XVECEXP (next, 0, 0))) == CALL)
- || (GET_CODE (next) == PARALLEL
- && GET_CODE (XVECEXP (next, 0, 0)) == CALL))
- printf (" emit_call_insn (");
- else if (LABEL_P (next))
- printf (" emit_label (");
- else if (GET_CODE (next) == MATCH_OPERAND
- || GET_CODE (next) == MATCH_OPERATOR
- || GET_CODE (next) == MATCH_PARALLEL
- || GET_CODE (next) == MATCH_OP_DUP
- || GET_CODE (next) == MATCH_DUP
- || GET_CODE (next) == PARALLEL)
- printf (" emit (");
- else
- printf (" emit_insn (");
- 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 `get_insns' to make a list of all the
- insns emitted within this gen_... function. */
-
- printf (" _val = get_insns ();\n");
- printf (" end_sequence ();\n");
- printf (" return _val;\n}\n\n");
-
- free (used);
-}
-
-/* Write a function, `add_clobbers', that is given a PARALLEL of sufficient
- size for the insn and an INSN_CODE, and inserts the required CLOBBERs at
- the end of the vector. */
-
-static void
-output_add_clobbers (void)
-{
- struct clobber_pat *clobber;
- struct clobber_ent *ent;
- int i;
-
- 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 (clobber = clobber_list; clobber; clobber = clobber->next)
- {
- for (ent = clobber->insns; ent; ent = ent->next)
- printf (" case %d:\n", ent->code_number);
-
- for (i = clobber->first_clobber; i < XVECLEN (clobber->pattern, 1); i++)
- {
- printf (" XVECEXP (pattern, 0, %d) = ", i);
- gen_exp (XVECEXP (clobber->pattern, 1, i),
- GET_CODE (clobber->pattern), NULL);
- printf (";\n");
- }
-
- printf (" break;\n\n");
- }
-
- printf (" default:\n");
- printf (" gcc_unreachable ();\n");
- printf (" }\n");
- printf ("}\n");
-}
-
-/* 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_added_clobbers_hard_reg_p (void)
-{
- struct clobber_pat *clobber;
- struct clobber_ent *ent;
- int clobber_p, used;
-
- printf ("\n\nint\nadded_clobbers_hard_reg_p (int insn_code_number)\n");
- printf ("{\n");
- printf (" switch (insn_code_number)\n");
- printf (" {\n");
-
- for (clobber_p = 0; clobber_p <= 1; clobber_p++)
- {
- 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");
-}
-
-/* Generate code to invoke find_free_register () as needed for the
- scratch registers used by the peephole2 pattern in SPLIT. */
-
-static void
-output_peephole2_scratches (rtx split)
-{
- int i;
- int insn_nr = 0;
-
- printf (" HARD_REG_SET _regs_allocated;\n");
- printf (" CLEAR_HARD_REG_SET (_regs_allocated);\n");
-
- 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)));
-
- }
- else if (GET_CODE (elt) != MATCH_DUP)
- insn_nr++;
- }
-}
-
-int
-main (int argc, char **argv)
-{
- rtx desc;
-
- progname = "genemit";
-
- 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. */
-
- insn_code_number = 0;
- insn_index_number = 0;
-
- printf ("/* Generated automatically by the program `genemit'\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 \"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 \"hard-reg-set.h\"\n");
- printf ("#include \"recog.h\"\n");
- printf ("#include \"resource.h\"\n");
- printf ("#include \"reload.h\"\n");
- printf ("#include \"toplev.h\"\n");
- printf ("#include \"tm-constrs.h\"\n");
- printf ("#include \"ggc.h\"\n\n");
- printf ("#include \"basic-block.h\"\n\n");
- printf ("#define FAIL return (end_sequence (), _val)\n");
- printf ("#define DONE return (_val = get_insns (), end_sequence (), _val)\n\n");
-
- /* Read the machine description. */
-
- while (1)
- {
- int line_no;
-
- desc = read_md_rtx (&line_no, &insn_code_number);
- if (desc == NULL)
- break;
-
- 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);
- break;
-
- case DEFINE_SPLIT:
- printf ("/* %s:%d */\n", read_rtx_filename, line_no);
- gen_split (desc);
- 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 routines to add CLOBBERs to a pattern and say whether they
- clobber a hard reg. */
- output_add_clobbers ();
- output_added_clobbers_hard_reg_p ();
-
- fflush (stdout);
- return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
-}