diff options
Diffstat (limited to 'gcc/gcse.c')
-rw-r--r-- | gcc/gcse.c | 10 |
1 files changed, 4 insertions, 6 deletions
@@ -2351,12 +2351,10 @@ try_replace_reg (rtx from, rtx to, rtx insn) && validate_change (insn, &SET_SRC (set), src, 0)) success = 1; - /* If we've failed to do replacement, have a single SET, don't already - have a note, and have no special SET, add a REG_EQUAL note to not - lose information. */ - if (!success && note == 0 && set != 0 - && GET_CODE (SET_DEST (set)) != ZERO_EXTRACT - && GET_CODE (SET_DEST (set)) != STRICT_LOW_PART) + /* If we've failed perform the replacement, have a single SET to + a REG destination and don't yet have a note, add a REG_EQUAL note + to not lose information. */ + if (!success && note == 0 && set != 0 && REG_P (SET_DEST (set))) note = set_unique_reg_note (insn, REG_EQUAL, copy_rtx (src)); } |