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| author | Evan Cheng <evan.cheng@apple.com> | 2008-03-25 20:07:13 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-03-25 20:07:13 +0000 |
| commit | 2b72c059925648887f0714e369977d3074a331a7 (patch) | |
| tree | 119995ec41c4792a62030de2c6d0829d046ea116 /llvm/test/Transforms/InstCombine/xor-undef.ll | |
| parent | 4c1559f54eb1cb465c83ea23b79368800433031e (diff) | |
| download | bcm5719-llvm-2b72c059925648887f0714e369977d3074a331a7.tar.gz bcm5719-llvm-2b72c059925648887f0714e369977d3074a331a7.zip | |
Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it.
llvm-svn: 48791
Diffstat (limited to 'llvm/test/Transforms/InstCombine/xor-undef.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/xor-undef.ll | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/xor-undef.ll b/llvm/test/Transforms/InstCombine/xor-undef.ll new file mode 100644 index 00000000000..c090223b537 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/xor-undef.ll @@ -0,0 +1,6 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep zeroinitializer + +define <2 x i64> @f() { + %tmp = xor <2 x i64> undef, undef + ret <2 x i64> %tmp +} |
