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comparison gcc/store-motion.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
parents 84e7813d76e9
children
comparison
equal deleted inserted replaced
131:84e7813d76e9 145:1830386684a0
1 /* Store motion via Lazy Code Motion on the reverse CFG. 1 /* Store motion via Lazy Code Motion on the reverse CFG.
2 Copyright (C) 1997-2018 Free Software Foundation, Inc. 2 Copyright (C) 1997-2020 Free Software Foundation, Inc.
3 3
4 This file is part of GCC. 4 This file is part of GCC.
5 5
6 GCC is free software; you can redistribute it and/or modify it under 6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free 7 the terms of the GNU General Public License as published by the Free
910 struct st_expr *smexpr) 910 struct st_expr *smexpr)
911 { 911 {
912 rtx_insn *insn; 912 rtx_insn *insn;
913 rtx mem, note, set; 913 rtx mem, note, set;
914 914
915 mem = smexpr->pattern; 915 insn = prepare_copy_insn (reg, SET_SRC (single_set (del)));
916 insn = gen_move_insn (reg, SET_SRC (single_set (del)));
917 916
918 unsigned int i; 917 unsigned int i;
919 rtx_insn *temp; 918 rtx_insn *temp;
920 FOR_EACH_VEC_ELT_REVERSE (smexpr->antic_stores, i, temp) 919 FOR_EACH_VEC_ELT_REVERSE (smexpr->antic_stores, i, temp)
921 if (temp == del) 920 if (temp == del)
944 delete_insn (del); 943 delete_insn (del);
945 944
946 /* Now we must handle REG_EQUAL notes whose contents is equal to the mem; 945 /* Now we must handle REG_EQUAL notes whose contents is equal to the mem;
947 they are no longer accurate provided that they are reached by this 946 they are no longer accurate provided that they are reached by this
948 definition, so drop them. */ 947 definition, so drop them. */
948 mem = smexpr->pattern;
949 for (; insn != NEXT_INSN (BB_END (bb)); insn = NEXT_INSN (insn)) 949 for (; insn != NEXT_INSN (BB_END (bb)); insn = NEXT_INSN (insn))
950 if (NONDEBUG_INSN_P (insn)) 950 if (NONDEBUG_INSN_P (insn))
951 { 951 {
952 set = single_set (insn); 952 set = single_set (insn);
953 if (!set) 953 if (!set)