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| author | Dan Gohman <gohman@apple.com> | 2008-09-10 23:30:57 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-09-10 23:30:57 +0000 |
| commit | b80d5614b02a56709f72656df8ace6415ab64f4a (patch) | |
| tree | cb0db8492395c2cba9c05da3f7aadf073062c5be /test | |
| parent | d8d71075c38150f68d1c9f229c318ecf7398be4d (diff) | |
| download | external_llvm-b80d5614b02a56709f72656df8ace6415ab64f4a.zip external_llvm-b80d5614b02a56709f72656df8ace6415ab64f4a.tar.gz external_llvm-b80d5614b02a56709f72656df8ace6415ab64f4a.tar.bz2 | |
Fix an icmp+sdiv optimization to check for and handle an overflow
condition. This fixes PR2740.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56076 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstCombine/div-cmp-overflow.ll | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/div-cmp-overflow.ll b/test/Transforms/InstCombine/div-cmp-overflow.ll new file mode 100644 index 0000000..9276c96 --- /dev/null +++ b/test/Transforms/InstCombine/div-cmp-overflow.ll @@ -0,0 +1,8 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep sdiv +; PR2740 + +define i1 @func_75(i32 %i2) nounwind { + %i3 = sdiv i32 %i2, -1328634635 + %i4 = icmp eq i32 %i3, -1 + ret i1 %i4 +} |