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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/genconfig.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/genconfig.c | 366 |
1 files changed, 0 insertions, 366 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/genconfig.c b/gcc-4.2.1-5666.3/gcc/genconfig.c deleted file mode 100644 index 939131510..000000000 --- a/gcc-4.2.1-5666.3/gcc/genconfig.c +++ /dev/null @@ -1,366 +0,0 @@ -/* Generate from machine description: - - some #define configuration flags. - Copyright (C) 1987, 1991, 1997, 1998, 1999, 2000, 2003, 2004 - 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" - - -/* 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 have_cc0_flag; -static int have_cmove_flag; -static int have_cond_exec_flag; -static int have_lo_sum_flag; -static int have_peephole_flag; -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 (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 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 nonzero if this pattern was seen in a SET_SRC - of a SET whose destination is not (pc). */ - -static void -walk_insn_part (rtx part, int recog_p, int non_pc_set_src) -{ - int i, j; - RTX_CODE code; - const char *format_ptr; - - if (part == 0) - return; - - code = GET_CODE (part); - switch (code) - { - case CLOBBER: - clobbers_seen_this_insn++; - break; - - case MATCH_OPERAND: - if (XINT (part, 0) > max_recog_operands) - max_recog_operands = XINT (part, 0); - return; - - case MATCH_OP_DUP: - case MATCH_PAR_DUP: - ++dup_operands_seen_this_insn; - case MATCH_SCRATCH: - case MATCH_PARALLEL: - case MATCH_OPERATOR: - if (XINT (part, 0) > max_recog_operands) - max_recog_operands = XINT (part, 0); - /* Now scan the rtl's in the vector inside the MATCH_OPERATOR or - MATCH_PARALLEL. */ - break; - - case LABEL_REF: - if (GET_CODE (XEXP (part, 0)) == MATCH_OPERAND - || GET_CODE (XEXP (part, 0)) == MATCH_DUP) - break; - return; - - case MATCH_DUP: - ++dup_operands_seen_this_insn; - if (XINT (part, 0) > max_recog_operands) - max_recog_operands = XINT (part, 0); - return; - - case CC0: - if (recog_p) - have_cc0_flag = 1; - return; - - case LO_SUM: - if (recog_p) - have_lo_sum_flag = 1; - return; - - case SET: - walk_insn_part (SET_DEST (part), 0, recog_p); - walk_insn_part (SET_SRC (part), recog_p, - GET_CODE (SET_DEST (part)) != PC); - return; - - case IF_THEN_ELSE: - /* Only consider this machine as having a conditional move if the - 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 (recog_p && non_pc_set_src - && GET_CODE (XEXP (part, 1)) == MATCH_OPERAND - && GET_CODE (XEXP (part, 2)) == MATCH_OPERAND) - have_cmove_flag = 1; - break; - - case COND_EXEC: - if (recog_p) - have_cond_exec_flag = 1; - break; - - case REG: case CONST_INT: case SYMBOL_REF: - case PC: - return; - - default: - break; - } - - format_ptr = GET_RTX_FORMAT (GET_CODE (part)); - - for (i = 0; i < GET_RTX_LENGTH (GET_CODE (part)); i++) - switch (*format_ptr++) - { - case 'e': - case 'u': - walk_insn_part (XEXP (part, i), recog_p, non_pc_set_src); - break; - case 'E': - if (XVEC (part, i) != NULL) - for (j = 0; j < XVECLEN (part, i); j++) - walk_insn_part (XVECEXP (part, i, j), recog_p, non_pc_set_src); - break; - } -} - -static void -gen_insn (rtx insn) -{ - int i; - - /* Walk the insn pattern to gather the #define's status. */ - clobbers_seen_this_insn = 0; - dup_operands_seen_this_insn = 0; - if (XVEC (insn, 1) != 0) - for (i = 0; i < XVECLEN (insn, 1); i++) - walk_insn_part (XVECEXP (insn, 1, i), 1, 0); - - if (clobbers_seen_this_insn > max_clobbers_per_insn) - max_clobbers_per_insn = clobbers_seen_this_insn; - if (dup_operands_seen_this_insn > max_dup_operands) - max_dup_operands = dup_operands_seen_this_insn; -} - -/* Similar but scan a define_expand. */ - -static void -gen_expand (rtx insn) -{ - int i; - - /* Walk the insn pattern to gather the #define's status. */ - - /* Note that we don't bother recording the number of MATCH_DUPs - that occur in a gen_expand, because only reload cares about that. */ - if (XVEC (insn, 1) != 0) - for (i = 0; i < XVECLEN (insn, 1); i++) - { - /* Compute the maximum SETs and CLOBBERS - in any one of the sub-insns; - don't sum across all of them. */ - clobbers_seen_this_insn = 0; - - walk_insn_part (XVECEXP (insn, 1, i), 0, 0); - - if (clobbers_seen_this_insn > max_clobbers_per_insn) - max_clobbers_per_insn = clobbers_seen_this_insn; - } -} - -/* Similar but scan a define_split. */ - -static void -gen_split (rtx split) -{ - int i; - - /* Look through the patterns that are matched - to compute the maximum operand number. */ - for (i = 0; i < XVECLEN (split, 0); i++) - walk_insn_part (XVECEXP (split, 0, i), 1, 0); - /* Look at the number of insns this insn could split into. */ - if (XVECLEN (split, 2) > max_insns_per_split) - max_insns_per_split = XVECLEN (split, 2); -} - -static void -gen_peephole (rtx peep) -{ - int i; - - /* Look through the patterns that are matched - to compute the maximum operand number. */ - for (i = 0; i < XVECLEN (peep, 0); i++) - walk_insn_part (XVECEXP (peep, 0, i), 1, 0); -} - -static void -gen_peephole2 (rtx peep) -{ - int i, n; - - /* 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); - - /* 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 (int argc, char **argv) -{ - rtx desc; - - progname = "genconfig"; - - if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE) - return (FATAL_EXIT_CODE); - - 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 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) - { - int line_no, insn_code_number = 0; - - desc = read_md_rtx (&line_no, &insn_code_number); - if (desc == NULL) - break; - - switch (GET_CODE (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 ("#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"); - printf ("#define MAX_INSNS_PER_SPLIT %d\n", max_insns_per_split); - printf ("#endif\n"); - - if (have_cc0_flag) - { - 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 1\n"); - - if (have_cond_exec_flag) - printf ("#define HAVE_conditional_execution 1\n"); - - if (have_lo_sum_flag) - printf ("#define HAVE_lo_sum 1\n"); - - if (have_peephole_flag) - printf ("#define HAVE_peephole 1\n"); - - if (have_peephole2_flag) - { - printf ("#define HAVE_peephole2 1\n"); - printf ("#define MAX_INSNS_PER_PEEP2 %d\n", max_insns_per_peep2); - } - - puts("\n#endif /* GCC_INSN_CONFIG_H */"); - - if (ferror (stdout) || fflush (stdout) || fclose (stdout)) - return FATAL_EXIT_CODE; - - return SUCCESS_EXIT_CODE; -} |