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| author | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-02-11 08:11:34 +0000 |
|---|---|---|
| committer | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-02-11 08:11:34 +0000 |
| commit | 67755ff06f1dec8e888a9f8a08375edff3bccf9b (patch) | |
| tree | a79a77ff63e91824a64db15c69f6b933d0f1d178 /gcc/compare-elim.c | |
| parent | c2e397da783df9052a075fd58f19c1b82afa5c8e (diff) | |
| download | ppe42-gcc-67755ff06f1dec8e888a9f8a08375edff3bccf9b.tar.gz ppe42-gcc-67755ff06f1dec8e888a9f8a08375edff3bccf9b.zip | |
* compare-elim.c (find_comparisons_in_bb): Eliminate only compares
having the same mode as previous compare.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@184124 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/compare-elim.c')
| -rw-r--r-- | gcc/compare-elim.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/compare-elim.c b/gcc/compare-elim.c index 8d7fd010b9d..15d8d622585 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 |
