X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fgenconfig.c;h=6fb96b8450e7ed79e6e9c8457cc643921c128210;hp=94e2653a3925fbe4bab5f2b27f86e40e80488eb4;hb=97a8c733fb8eb6b5809eafd037c3826f519063ca;hpb=6357eaae5779649838519220018bd3f912036f24 diff --git a/gcc/genconfig.c b/gcc/genconfig.c index 94e2653a392..6fb96b8450e 100644 --- a/gcc/genconfig.c +++ b/gcc/genconfig.c @@ -1,45 +1,41 @@ /* Generate from machine description: - some #define configuration flags. - Copyright (C) 1987, 1991, 1997, 1998, 1999 Free Software Foundation, Inc. + Copyright (C) 1987, 1991, 1997, 1998, 1999, 2000, 2003, 2004, 2007, 2010 + 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 /* flags to determine output of machine description dependent #define's. */ static int max_recog_operands; /* Largest operand number seen. */ static int max_dup_operands; /* Largest number of match_dup in any insn. */ static int max_clobbers_per_insn; -static int register_constraint_flag; static int have_cc0_flag; static int have_cmove_flag; -static int have_cond_arith_flag; +static int have_cond_exec_flag; static int have_lo_sum_flag; static int have_peephole_flag; static int have_peephole2_flag; @@ -47,30 +43,31 @@ static int have_peephole2_flag; /* Maximum number of insns seen in a split. */ static int max_insns_per_split = 1; +/* Maximum number of input insns for peephole2. */ +static int max_insns_per_peep2; + static int clobbers_seen_this_insn; static int dup_operands_seen_this_insn; -static void walk_insn_part PROTO((rtx, int, int)); -static void gen_insn PROTO((rtx)); -static void gen_expand PROTO((rtx)); -static void gen_split PROTO((rtx)); -static void gen_peephole PROTO((rtx)); +static void walk_insn_part (rtx, int, int); +static void gen_insn (rtx); +static void gen_expand (rtx); +static void gen_split (rtx); +static void gen_peephole (rtx); +static void gen_peephole2 (rtx); -/* RECOG_P will be non-zero if this pattern was seen in a context where it will - be used to recognize, rather than just generate an insn. +/* RECOG_P will be nonzero if this pattern was seen in a context where it will + be used to recognize, rather than just generate an insn. - NON_PC_SET_SRC will be non-zero if this pattern was seen in a SET_SRC + NON_PC_SET_SRC will be nonzero if this pattern was seen in a SET_SRC of a SET whose destination is not (pc). */ static void -walk_insn_part (part, recog_p, non_pc_set_src) - rtx part; - int recog_p; - int non_pc_set_src; +walk_insn_part (rtx part, int recog_p, int non_pc_set_src) { - register int i, j; - register RTX_CODE code; - register const char *format_ptr; + int i, j; + RTX_CODE code; + const char *format_ptr; if (part == 0) return; @@ -85,8 +82,6 @@ walk_insn_part (part, recog_p, non_pc_set_src) case MATCH_OPERAND: if (XINT (part, 0) > max_recog_operands) max_recog_operands = XINT (part, 0); - if (XSTR (part, 2) && *XSTR (part, 2)) - register_constraint_flag = 1; return; case MATCH_OP_DUP: @@ -102,7 +97,8 @@ walk_insn_part (part, recog_p, non_pc_set_src) break; case LABEL_REF: - if (GET_CODE (XEXP (part, 0)) == MATCH_OPERAND) + if (GET_CODE (XEXP (part, 0)) == MATCH_OPERAND + || GET_CODE (XEXP (part, 0)) == MATCH_DUP) break; return; @@ -133,21 +129,17 @@ walk_insn_part (part, recog_p, non_pc_set_src) two arms of the IF_THEN_ELSE are both MATCH_OPERAND. Otherwise, we have some specific IF_THEN_ELSE construct (like the doz instruction on the RS/6000) that can't be used in the general - context we want it for. If the first operand is an arithmetic - operation and the second is a MATCH_OPERNAND, show we have - conditional arithmetic. */ + context we want it for. */ if (recog_p && non_pc_set_src && GET_CODE (XEXP (part, 1)) == MATCH_OPERAND && GET_CODE (XEXP (part, 2)) == MATCH_OPERAND) have_cmove_flag = 1; - else if (recog_p && non_pc_set_src - && (GET_RTX_CLASS (GET_CODE (XEXP (part, 1))) == '1' - || GET_RTX_CLASS (GET_CODE (XEXP (part, 1))) == '2' - || GET_RTX_CLASS (GET_CODE (XEXP (part, 1))) == 'c') - && GET_CODE (XEXP (XEXP (part, 1), 0)) == MATCH_OPERAND - && GET_CODE (XEXP (part, 2)) == MATCH_OPERAND) - have_cond_arith_flag = 1; + break; + + case COND_EXEC: + if (recog_p) + have_cond_exec_flag = 1; break; case REG: case CONST_INT: case SYMBOL_REF: @@ -176,8 +168,7 @@ walk_insn_part (part, recog_p, non_pc_set_src) } static void -gen_insn (insn) - rtx insn; +gen_insn (rtx insn) { int i; @@ -197,8 +188,7 @@ gen_insn (insn) /* Similar but scan a define_expand. */ static void -gen_expand (insn) - rtx insn; +gen_expand (rtx insn) { int i; @@ -224,8 +214,7 @@ gen_expand (insn) /* Similar but scan a define_split. */ static void -gen_split (split) - rtx split; +gen_split (rtx split) { int i; @@ -239,8 +228,7 @@ gen_split (split) } static void -gen_peephole (peep) - rtx peep; +gen_peephole (rtx peep) { int i; @@ -249,131 +237,129 @@ gen_peephole (peep) for (i = 0; i < XVECLEN (peep, 0); i++) walk_insn_part (XVECEXP (peep, 0, i), 1, 0); } - -PTR -xmalloc (size) - size_t size; -{ - register PTR val = (PTR) malloc (size); - if (val == 0) - fatal ("virtual memory exhausted"); +static void +gen_peephole2 (rtx peep) +{ + int i, n; - return val; -} + /* Look through the patterns that are matched + to compute the maximum operand number. */ + for (i = XVECLEN (peep, 0) - 1; i >= 0; --i) + walk_insn_part (XVECEXP (peep, 0, i), 1, 0); -PTR -xrealloc (old, size) - PTR old; - size_t size; -{ - register PTR ptr; - if (old) - ptr = (PTR) realloc (old, size); - else - ptr = (PTR) malloc (size); - if (!ptr) - fatal ("virtual memory exhausted"); - return ptr; + /* Look at the number of insns this insn can be matched from. */ + for (i = XVECLEN (peep, 0) - 1, n = 0; i >= 0; --i) + if (GET_CODE (XVECEXP (peep, 0, i)) != MATCH_DUP + && GET_CODE (XVECEXP (peep, 0, i)) != MATCH_SCRATCH) + n++; + if (n > max_insns_per_peep2) + max_insns_per_peep2 = n; } int -main (argc, argv) - int argc; - char **argv; +main (int argc, char **argv) { rtx desc; - FILE *infile; - register int c; progname = "genconfig"; - obstack_init (rtl_obstack); - - if (argc <= 1) - fatal ("No input file name."); - infile = fopen (argv[1], "r"); - if (infile == 0) - { - perror (argv[1]); - exit (FATAL_EXIT_CODE); - } + if (!init_rtx_reader_args (argc, argv)) + return (FATAL_EXIT_CODE); - printf ("/* Generated automatically by the program `genconfig'\n\ -from the machine description file `md'. */\n\n"); + puts ("/* Generated automatically by the program `genconfig'"); + puts (" from the machine description file `md'. */\n"); + puts ("#ifndef GCC_INSN_CONFIG_H"); + puts ("#define GCC_INSN_CONFIG_H\n"); - /* Allow at least 10 operands for the sake of asm constructs. */ - max_recog_operands = 9; /* We will add 1 later. */ + /* Allow at least 30 operands for the sake of asm constructs. */ + /* ??? We *really* ought to reorganize things such that there + is no fixed upper bound. */ + max_recog_operands = 29; /* We will add 1 later. */ max_dup_operands = 1; /* Read the machine description. */ while (1) { - c = read_skip_spaces (infile); - if (c == EOF) + int line_no, insn_code_number = 0; + + 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); - if (GET_CODE (desc) == DEFINE_EXPAND) - gen_expand (desc); - if (GET_CODE (desc) == DEFINE_SPLIT) - gen_split (desc); - if (GET_CODE (desc) == DEFINE_PEEPHOLE2) - { - have_peephole2_flag = 1; - gen_split (desc); - } - if (GET_CODE (desc) == DEFINE_PEEPHOLE) + + switch (GET_CODE (desc)) { - have_peephole_flag = 1; - gen_peephole (desc); + case DEFINE_INSN: + gen_insn (desc); + break; + + case DEFINE_EXPAND: + gen_expand (desc); + break; + + case DEFINE_SPLIT: + gen_split (desc); + break; + + case DEFINE_PEEPHOLE2: + have_peephole2_flag = 1; + gen_peephole2 (desc); + break; + + case DEFINE_PEEPHOLE: + have_peephole_flag = 1; + gen_peephole (desc); + break; + + default: + break; } } - printf ("\n#define MAX_RECOG_OPERANDS %d\n", max_recog_operands + 1); - - printf ("\n#define MAX_DUP_OPERANDS %d\n", max_dup_operands); + printf ("#define MAX_RECOG_OPERANDS %d\n", max_recog_operands + 1); + printf ("#define MAX_DUP_OPERANDS %d\n", max_dup_operands); /* This is conditionally defined, in case the user writes code which emits more splits than we can readily see (and knows s/he does it). */ - printf ("#ifndef MAX_INSNS_PER_SPLIT\n#define MAX_INSNS_PER_SPLIT %d\n#endif\n", - max_insns_per_split); - - if (register_constraint_flag) - printf ("#define REGISTER_CONSTRAINTS\n"); + printf ("#ifndef MAX_INSNS_PER_SPLIT\n"); + printf ("#define MAX_INSNS_PER_SPLIT %d\n", max_insns_per_split); + printf ("#endif\n"); if (have_cc0_flag) - printf ("#define HAVE_cc0\n"); + { + printf ("#define HAVE_cc0 1\n"); + printf ("#define CC0_P(X) ((X) == cc0_rtx)\n"); + } + else + { + /* We output CC0_P this way to make sure that X is declared + somewhere. */ + printf ("#define CC0_P(X) ((X) ? 0 : 0)\n"); + } if (have_cmove_flag) - printf ("#define HAVE_conditional_move\n"); + printf ("#define HAVE_conditional_move 1\n"); - if (have_cond_arith_flag) - printf ("#define HAVE_conditional_arithmetic\n"); + if (have_cond_exec_flag) + printf ("#define HAVE_conditional_execution 1\n"); if (have_lo_sum_flag) - printf ("#define HAVE_lo_sum\n"); + printf ("#define HAVE_lo_sum 1\n"); if (have_peephole_flag) - printf ("#define HAVE_peephole\n"); + printf ("#define HAVE_peephole 1\n"); if (have_peephole2_flag) - printf ("#define HAVE_peephole2\n"); + { + printf ("#define HAVE_peephole2 1\n"); + printf ("#define MAX_INSNS_PER_PEEP2 %d\n", max_insns_per_peep2); + } - fflush (stdout); - exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE); - /* NOTREACHED */ - return 0; -} + puts("\n#endif /* GCC_INSN_CONFIG_H */"); -/* Define this so we can link with print-rtl.o to get debug_rtx function. */ -const char * -get_insn_name (code) - int code; -{ - return NULL; + if (ferror (stdout) || fflush (stdout) || fclose (stdout)) + return FATAL_EXIT_CODE; + + return SUCCESS_EXIT_CODE; }