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-rw-r--r--gcc/gcse.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/gcc/gcse.c b/gcc/gcse.c
index 775c7e1..39a5d22 100644
--- a/gcc/gcse.c
+++ b/gcc/gcse.c
@@ -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));
}