aboutsummaryrefslogtreecommitdiff
path: root/gcc/compare-elim.c
diff options
context:
space:
mode:
authorUros Bizjak <uros@gcc.gnu.org>2012-02-11 09:11:34 +0100
committerUros Bizjak <uros@gcc.gnu.org>2012-02-11 09:11:34 +0100
commit28f7ff45ec593f6a2f5f76e16f32c682564794e4 (patch)
treea79a77ff63e91824a64db15c69f6b933d0f1d178 /gcc/compare-elim.c
parent83a5c149a6a19a98d0e5e46d43927549f210a14e (diff)
downloadgcc-28f7ff45ec593f6a2f5f76e16f32c682564794e4.zip
gcc-28f7ff45ec593f6a2f5f76e16f32c682564794e4.tar.gz
gcc-28f7ff45ec593f6a2f5f76e16f32c682564794e4.tar.bz2
compare-elim.c (find_comparisons_in_bb): Eliminate only compares having the same mode as previous compare.
* compare-elim.c (find_comparisons_in_bb): Eliminate only compares having the same mode as previous compare. From-SVN: r184124
Diffstat (limited to 'gcc/compare-elim.c')
-rw-r--r--gcc/compare-elim.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/compare-elim.c b/gcc/compare-elim.c
index 8d7fd01..15d8d62 100644
--- a/gcc/compare-elim.c
+++ b/gcc/compare-elim.c
@@ -297,8 +297,11 @@ find_comparisons_in_bb (struct dom_walk_data *data ATTRIBUTE_UNUSED,
src = conforming_compare (insn);
if (src)
{
+ enum machine_mode src_mode = GET_MODE (src);
+
/* Eliminate a compare that's redundant with the previous. */
if (last_cmp_valid
+ && src_mode == last_cmp->orig_mode
&& rtx_equal_p (last_cmp->in_a, XEXP (src, 0))
&& rtx_equal_p (last_cmp->in_b, XEXP (src, 1)))
{
@@ -311,7 +314,7 @@ find_comparisons_in_bb (struct dom_walk_data *data ATTRIBUTE_UNUSED,
last_cmp->prev_clobber = last_clobber;
last_cmp->in_a = XEXP (src, 0);
last_cmp->in_b = XEXP (src, 1);
- last_cmp->orig_mode = GET_MODE (SET_DEST (single_set (insn)));
+ last_cmp->orig_mode = src_mode;
VEC_safe_push (comparison_struct_p, heap, all_compares, last_cmp);
/* It's unusual, but be prepared for comparison patterns that