diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/genemit.c')
-rw-r--r-- | gcc-4.2.1-5666.3/gcc/genemit.c | 897 |
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); -} |