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| author | Chris Lattner <sabre@nondot.org> | 2010-01-19 18:16:19 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-01-19 18:16:19 +0000 |
| commit | 18f49ce2d39f828ba7a82018566bb7edb66a9289 (patch) | |
| tree | d662e25e8b02bd7b2af1e6a62bcf6d53d0b62f92 /llvm/test/Transforms/InstCombine/xor2.ll | |
| parent | c1d2fa5d48b885ab448f34f1145dbc1ab889d794 (diff) | |
| download | bcm5719-llvm-18f49ce2d39f828ba7a82018566bb7edb66a9289.tar.gz bcm5719-llvm-18f49ce2d39f828ba7a82018566bb7edb66a9289.zip | |
optimize ~(~X >>s Y) --> (X >>s Y), patch by Edmund Grimley
Evans!
llvm-svn: 93884
Diffstat (limited to 'llvm/test/Transforms/InstCombine/xor2.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/xor2.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/xor2.ll b/llvm/test/Transforms/InstCombine/xor2.ll index 23a99158137..de3d65dd8cb 100644 --- a/llvm/test/Transforms/InstCombine/xor2.ll +++ b/llvm/test/Transforms/InstCombine/xor2.ll @@ -41,3 +41,13 @@ define i32 @test3(i32 %tmp1) { %ov110 = xor i32 %ov31, 153 ret i32 %ov110 } + +define i32 @test4(i32 %A, i32 %B) { + %1 = xor i32 %A, -1 + %2 = ashr i32 %1, %B + %3 = xor i32 %2, -1 + ret i32 %3 +; CHECK: @test4 +; CHECK: %1 = ashr i32 %A, %B +; CHECK: ret i32 %1 +} |
