diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 16 |
1 files changed, 7 insertions, 9 deletions
@@ -5067,18 +5067,16 @@ cse_insn (insn, libcall_insn) sets[i].src_in_memory = hash_arg_in_memory; /* If SRC is a MEM, there is a REG_EQUIV note for SRC, and DEST is - a pseudo that is set more than once, do not record SRC. Using - SRC as a replacement for anything else will be incorrect in that - situation. Note that this usually occurs only for stack slots, - in which case all the RTL would be referring to SRC, so we don't - lose any optimization opportunities by not having SRC in the - hash table. */ + a pseudo, do not record SRC. Using SRC as a replacement for + anything else will be incorrect in that situation. Note that + this usually occurs only for stack slots, in which case all the + RTL would be referring to SRC, so we don't lose any optimization + opportunities by not having SRC in the hash table. */ if (GET_CODE (src) == MEM - && find_reg_note (insn, REG_EQUIV, src) != 0 + && find_reg_note (insn, REG_EQUIV, NULL_RTX) != 0 && GET_CODE (dest) == REG - && REGNO (dest) >= FIRST_PSEUDO_REGISTER - && REG_N_SETS (REGNO (dest)) != 1) + && REGNO (dest) >= FIRST_PSEUDO_REGISTER) sets[i].src_volatile = 1; #if 0 |