X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fgenconfig.c;h=404534e120c3feba561f0792511713a073e842cc;hb=28746ceccb12f1ded4bf50e79d21d79fd1286ba8;hp=f49ad75a7b3670745e7d51de3e8677849304d26a;hpb=caef9864030b2a1c35244b581b38bceee7683049;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/genconfig.c b/gcc/genconfig.c index f49ad75a7b3..404534e120c 100644 --- a/gcc/genconfig.c +++ b/gcc/genconfig.c @@ -1,7 +1,7 @@ /* Generate from machine description: - some #define configuration flags. - Copyright (C) 1987 Free Software Foundation, Inc. + Copyright (C) 1987, 1991 Free Software Foundation, Inc. This file is part of GNU CC. @@ -17,11 +17,12 @@ 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ #include -#include "config.h" +#include "hconfig.h" #include "rtl.h" #include "obstack.h" @@ -32,13 +33,15 @@ struct obstack *rtl_obstack = &obstack; #define obstack_chunk_free free extern void free (); +extern rtx read_rtx (); /* flags to determine output of machine description dependent #define's. */ -static int max_recog_operands; -static int max_dup_operands; +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_lo_sum_flag; /* Maximum number of insns seen in a split. */ @@ -52,11 +55,16 @@ static void fatal (); void fancy_abort (); /* 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. */ + 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 + of a SET whose destination is not (pc). */ static void -walk_insn_part (part, recog_p) +walk_insn_part (part, recog_p, non_pc_set_src) rtx part; + int recog_p; + int non_pc_set_src; { register int i, j; register RTX_CODE code; @@ -80,6 +88,7 @@ walk_insn_part (part, recog_p) return; case MATCH_OP_DUP: + case MATCH_PAR_DUP: ++dup_operands_seen_this_insn; case MATCH_SCRATCH: case MATCH_PARALLEL: @@ -111,6 +120,25 @@ walk_insn_part (part, 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 REG: case CONST_INT: case SYMBOL_REF: case PC: return; @@ -123,12 +151,12 @@ walk_insn_part (part, recog_p) { case 'e': case 'u': - walk_insn_part (XEXP (part, i), recog_p); + 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); + walk_insn_part (XVECEXP (part, i, j), recog_p, non_pc_set_src); break; } } @@ -144,7 +172,7 @@ gen_insn (insn) 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); + 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; @@ -172,7 +200,7 @@ gen_expand (insn) don't sum across all of them. */ clobbers_seen_this_insn = 0; - walk_insn_part (XVECEXP (insn, 1, i), 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; @@ -190,7 +218,7 @@ gen_split (split) /* 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); + 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); @@ -205,7 +233,7 @@ gen_peephole (peep) /* 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); + walk_insn_part (XVECEXP (peep, 0, i), 1, 0); } char * @@ -257,7 +285,6 @@ main (argc, argv) { rtx desc; FILE *infile; - extern rtx read_rtx (); register int c; obstack_init (rtl_obstack); @@ -278,7 +305,7 @@ main (argc, argv) from the machine description file `md'. */\n\n"); /* Allow at least 10 operands for the sake of asm constructs. */ - max_recog_operands = 10; + max_recog_operands = 9; /* We will add 1 later. */ max_dup_operands = 1; /* Read the machine description. */ @@ -301,7 +328,7 @@ from the machine description file `md'. */\n\n"); gen_peephole (desc); } - printf ("\n#define MAX_RECOG_OPERANDS %d\n", max_recog_operands); + printf ("\n#define MAX_RECOG_OPERANDS %d\n", max_recog_operands + 1); printf ("\n#define MAX_DUP_OPERANDS %d\n", max_dup_operands); @@ -316,6 +343,9 @@ from the machine description file `md'. */\n\n"); if (have_cc0_flag) printf ("#define HAVE_cc0\n"); + if (have_cmove_flag) + printf ("#define HAVE_conditional_move\n"); + if (have_lo_sum_flag) printf ("#define HAVE_lo_sum\n");