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| author | Eli Friedman <eli.friedman@gmail.com> | 2008-06-21 23:36:13 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2008-06-21 23:36:13 +0000 |
| commit | 5c1f17221344fe24f8ba78fdbac7db4f79ded257 (patch) | |
| tree | 9e5896866a1c7723953ccd6f2315979f8a459236 /test | |
| parent | 1adec83ae84031bfa9f0bf209c5ee6c64906a1ff (diff) | |
| download | external_llvm-5c1f17221344fe24f8ba78fdbac7db4f79ded257.zip external_llvm-5c1f17221344fe24f8ba78fdbac7db4f79ded257.tar.gz external_llvm-5c1f17221344fe24f8ba78fdbac7db4f79ded257.tar.bz2 | |
Fix for PR2479: correctly optimize expressions like (a > 13) & (a ==
15).
See also PR1800, which is about the signed case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52608 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstCombine/2008-06-21-CompareMiscomp.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2008-06-21-CompareMiscomp.ll b/test/Transforms/InstCombine/2008-06-21-CompareMiscomp.ll new file mode 100644 index 0000000..e2d7100 --- /dev/null +++ b/test/Transforms/InstCombine/2008-06-21-CompareMiscomp.ll @@ -0,0 +1,11 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {icmp eq i32 %In, 15} +; PR2479 +; (See also PR1800.) + +define i1 @test(i32 %In) { + %c1 = icmp ugt i32 %In, 13 + %c2 = icmp eq i32 %In, 15 + %V = and i1 %c1, %c2 + ret i1 %V +} + |