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| author | David Majnemer <david.majnemer@gmail.com> | 2014-12-10 21:58:15 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2014-12-10 21:58:15 +0000 |
| commit | 5a7717e498bc61246375a9df0061afa27d21e322 (patch) | |
| tree | 94f451a24757b23f737a19be9df22968c1d11f39 /llvm/test/Transforms/InstCombine | |
| parent | 89cf6d79ebc573647c562e5f2bd6c4d11a839f8b (diff) | |
| download | bcm5719-llvm-5a7717e498bc61246375a9df0061afa27d21e322.tar.gz bcm5719-llvm-5a7717e498bc61246375a9df0061afa27d21e322.zip | |
ConstantFold, InstSimplify: undef >>a x can be either -1 or 0, choose 0
Zero is usually a nicer constant to have than -1.
llvm-svn: 223969
Diffstat (limited to 'llvm/test/Transforms/InstCombine')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/shift.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/Transforms/InstCombine/shift.ll b/llvm/test/Transforms/InstCombine/shift.ll index 1acc0a56430..0b5b5deb68c 100644 --- a/llvm/test/Transforms/InstCombine/shift.ll +++ b/llvm/test/Transforms/InstCombine/shift.ll @@ -84,14 +84,14 @@ define <4 x i32> @test5a_non_splat_vector(<4 x i32> %A) { define i32 @test5b() { ; CHECK-LABEL: @test5b( -; CHECK: ret i32 -1 +; CHECK: ret i32 0 %B = ashr i32 undef, 2 ;; top two bits must be equal, so not undef ret i32 %B } define i32 @test5b2(i32 %A) { ; CHECK-LABEL: @test5b2( -; CHECK: ret i32 -1 +; CHECK: ret i32 0 %B = ashr i32 undef, %A ;; top %A bits must be equal, so not undef ret i32 %B } |
