diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-06-07 07:30:47 +0000 |
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| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-06-07 07:30:47 +0000 |
| commit | 5819d47b46dc64aeb8eb5759f4560a99b8ed8afe (patch) | |
| tree | 4acd58ee5cf0f663525e480405a65346172abaf2 /gcc/match.pd | |
| parent | fb587c648398fd8a348e1fd965df3f3208ec7f9f (diff) | |
| download | gcc-5819d47b46dc64aeb8eb5759f4560a99b8ed8afe.tar.gz | |
2016-06-07 Richard Biener <rguenther@suse.de>
PR middle-end/71423
* match.pd ((X | ~Y) -> Y <= X): Properly invert the comparison
for signed ops.
* gcc.dg/torture/pr71423.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@237166 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/match.pd')
| -rw-r--r-- | gcc/match.pd | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index 4d66243d78e..fe711159df9 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -900,12 +900,16 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (ne (bit_and:c (bit_not @0) @1) integer_zerop) (if (INTEGRAL_TYPE_P (TREE_TYPE (@1)) && TYPE_PRECISION (TREE_TYPE (@1)) == 1) - (lt @0 @1))) + (if (TYPE_UNSIGNED (TREE_TYPE (@1))) + (lt @0 @1) + (gt @0 @1)))) (simplify (ne (bit_ior:c (bit_not @0) @1) integer_zerop) (if (INTEGRAL_TYPE_P (TREE_TYPE (@1)) && TYPE_PRECISION (TREE_TYPE (@1)) == 1) - (le @0 @1))) + (if (TYPE_UNSIGNED (TREE_TYPE (@1))) + (le @0 @1) + (ge @0 @1)))) /* ~~x -> x */ (simplify |