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| author | Nick Lewycky <nicholas@mxc.ca> | 2008-07-09 05:20:13 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2008-07-09 05:20:13 +0000 |
| commit | d1f77bf9312e93c62e651a8cdc2cbee68a21f1c1 (patch) | |
| tree | b50ccb4fc7d6339fc337bcd998e3279fbbcbe56b /test | |
| parent | 6fa6a32e4e2fdbb77c82fd7f64a7232cdcac994e (diff) | |
| download | external_llvm-d1f77bf9312e93c62e651a8cdc2cbee68a21f1c1.zip external_llvm-d1f77bf9312e93c62e651a8cdc2cbee68a21f1c1.tar.gz external_llvm-d1f77bf9312e93c62e651a8cdc2cbee68a21f1c1.tar.bz2 | |
Fold ((1 << a) & 1) to (a == 0).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53276 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstCombine/2008-07-08-ShiftOneAndOne.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2008-07-08-ShiftOneAndOne.ll b/test/Transforms/InstCombine/2008-07-08-ShiftOneAndOne.ll new file mode 100644 index 0000000..956b9a6 --- /dev/null +++ b/test/Transforms/InstCombine/2008-07-08-ShiftOneAndOne.ll @@ -0,0 +1,10 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {icmp ne i32 \%a} +; PR2330 + +define i1 @foo(i32 %a) nounwind { +entry: + %tmp15 = shl i32 1, %a ; <i32> [#uses=1] + %tmp237 = and i32 %tmp15, 1 ; <i32> [#uses=1] + %toBool = icmp eq i32 %tmp237, 0 ; <i1> [#uses=1] + ret i1 %toBool +} |