X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fgenemit.c;h=7ac3c917067fefb8895f24142ff44847604880fb;hp=7e556235c1a5c6e8f1e274f23b3e988d48ec4797;hb=eb1bab1b4c12b3bb1890cdb1182d8d48a3c39897;hpb=ac7eca714c74d2d8d3aa68147127188d5e79b069 diff --git a/gcc/genemit.c b/gcc/genemit.c index 7e556235c1a..7ac3c917067 100644 --- a/gcc/genemit.c +++ b/gcc/genemit.c @@ -1,50 +1,41 @@ /* Generate code from machine description to emit insns as rtl. - Copyright (C) 1987, 88, 91, 94, 95, 97, 1998 Free Software Foundation, Inc. + Copyright (C) 1987, 1988, 1991, 1994, 1995, 1997, 1998, 1999, 2000, 2001, + 2003, 2004, 2005, 2007, 2008, 2009 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 +. */ -#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 - -static void fatal PVPROTO ((char *, ...)) - ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN; -void fancy_abort PROTO((void)) ATTRIBUTE_NORETURN; - -/* Define this so we can link with print-rtl.o to get debug_rtx function. */ -char **insn_name_ptr = 0; static int max_opno; static int max_dup_opno; -static int 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 @@ -53,6 +44,7 @@ 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. */ @@ -63,40 +55,39 @@ struct clobber_ent 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); 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); @@ -114,15 +105,14 @@ max_operand_1 (x) } 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)); @@ -131,16 +121,23 @@ max_operand_vec (insn, arg) } static void -print_code (code) - RTX_CODE code; +print_code (RTX_CODE code) { - register 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))); } } @@ -148,13 +145,12 @@ print_code (code) 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) { @@ -168,11 +164,23 @@ gen_exp (x) { 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 @@ -180,18 +188,21 @@ gen_exp (x) 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; @@ -202,7 +213,7 @@ gen_exp (x) return; case MATCH_SCRATCH: - printf ("gen_rtx_SCRATCH (%smode)", GET_MODE_NAME (GET_MODE (x))); + gen_rtx_scratch (x, subroutine_type); return; case ADDRESS: @@ -211,6 +222,14 @@ gen_exp (x) 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"); @@ -223,20 +242,25 @@ gen_exp (x) 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: + case CONST_FIXED: /* These shouldn't be written in MD files. Instead, the appropriate routines in varasm.c should be called. */ - abort (); + gcc_unreachable (); default: break; @@ -253,37 +277,47 @@ gen_exp (x) 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 (")"); -} +} /* 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 @@ -291,18 +325,24 @@ gen_insn (insn) 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 = XNEW (struct clobber_ent); + int j; link->code_number = insn_code_number; @@ -317,32 +357,33 @@ gen_insn (insn) 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); + rtx old_rtx = XEXP (XVECEXP (p->pattern, 1, j), 0); + rtx new_rtx = XEXP (XVECEXP (insn, 1, j), 0); - /* OLD and NEW are the same if both are to be a SCRATCH - of the same mode, + /* OLD and NEW_INSN 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) - || (GET_CODE (old) == REG && GET_CODE (new) == REG - && REGNO (old) == REGNO (new))))) + if (! (GET_MODE (old_rtx) == GET_MODE (new_rtx) + && ((GET_CODE (old_rtx) == MATCH_SCRATCH + && GET_CODE (new_rtx) == MATCH_SCRATCH) + || (REG_P (old_rtx) && REG_P (new_rtx) + && REGNO (old_rtx) == REGNO (new_rtx))))) break; } - + if (j == XVECLEN (insn, 1)) break; } if (p == 0) { - p = (struct clobber_pat *) xmalloc (sizeof (struct clobber_pat)); - + 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; } @@ -357,69 +398,79 @@ gen_insn (insn) 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)); + char *used = XCNEWVEC (char, operands); + + 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, used); } printf ("));\n}\n\n"); + XDELETEVEC (used); } } /* 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; + char *used; 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, @@ -430,7 +481,7 @@ gen_expand (expand) && 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; } @@ -439,8 +490,8 @@ gen_expand (expand) 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"); @@ -452,12 +503,17 @@ gen_expand (expand) 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' @@ -465,23 +521,30 @@ gen_expand (expand) 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. 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. */ + used = XCNEWVEC (char, + MAX (operands, MAX (max_scratch_opno, max_dup_opno) + 1)); + 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)) == 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) @@ -492,68 +555,95 @@ gen_expand (expand) || (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 || GET_CODE (next) == MATCH_OPERATOR - || GET_CODE (next) == MATCH_PARALLEL || GET_CODE (next) == MATCH_OP_DUP - || GET_CODE (next) == MATCH_DUP + || GET_CODE (next) == MATCH_PARALLEL + || GET_CODE (next) == MATCH_PAR_DUP || GET_CODE (next) == PARALLEL) printf (" emit ("); else printf (" emit_insn ("); - gen_exp (next); + gen_exp (next, DEFINE_EXPAND, 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 + XDELETEVEC (used); + + /* 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 = XCNEWVEC (char, 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++) @@ -580,7 +670,7 @@ gen_split (split) || (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 @@ -591,19 +681,21 @@ gen_split (split) 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); } /* Write a function, `add_clobbers', that is given a PARALLEL of sufficient @@ -611,14 +703,13 @@ gen_split (split) 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"); @@ -631,7 +722,8 @@ output_add_clobbers () 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"); } @@ -639,120 +731,105 @@ output_add_clobbers () } printf (" default:\n"); - printf (" abort ();\n"); + printf (" gcc_unreachable ();\n"); printf (" }\n"); printf ("}\n"); } -/* 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 } -PTR -xmalloc (size) - size_t size; -{ - register PTR val = (PTR) malloc (size); - - if (val == 0) - fatal ("virtual memory exhausted"); - - return val; -} - -PTR -xrealloc (ptr, size) - PTR ptr; - size_t size; -{ - register PTR result = (PTR) realloc (ptr, size); - if (!result) - fatal ("virtual memory exhausted"); - return result; -} +/* Generate code to invoke find_free_register () as needed for the + scratch registers used by the peephole2 pattern in SPLIT. */ static void -fatal VPROTO ((char *format, ...)) +output_peephole2_scratches (rtx split) { -#ifndef ANSI_PROTOTYPES - char *format; -#endif - va_list ap; - - VA_START (ap, format); - -#ifndef ANSI_PROTOTYPES - format = va_arg (ap, char *); -#endif - - fprintf (stderr, "genemit: "); - vfprintf (stderr, format, ap); - va_end (ap); - fprintf (stderr, "\n"); - exit (FATAL_EXIT_CODE); -} + int i; + int insn_nr = 0; + bool first = true; -/* 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++; + + if (first) + { + printf (" HARD_REG_SET _regs_allocated;\n"); + printf (" CLEAR_HARD_REG_SET (_regs_allocated);\n"); + first = false; + } -void -fancy_abort () -{ - fatal ("Internal gcc abort."); + 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 (argc, argv) - int argc; - char **argv; +main (int argc, char **argv) { rtx desc; - FILE *infile; - register int c; - - obstack_init (rtl_obstack); - if (argc <= 1) - fatal ("No input file name."); + progname = "genemit"; - 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. */ @@ -765,61 +842,73 @@ 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 \"dfp.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 \"regs.h\"\n"); + printf ("#include \"tm-constrs.h\"\n"); + printf ("#include \"ggc.h\"\n"); + printf ("#include \"basic-block.h\"\n"); + printf ("#include \"integrate.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); }