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Diffstat (limited to 'llvm/test/Transforms/Reassociate/shifttest.ll')
| -rw-r--r-- | llvm/test/Transforms/Reassociate/shifttest.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/test/Transforms/Reassociate/shifttest.ll b/llvm/test/Transforms/Reassociate/shifttest.ll new file mode 100644 index 00000000000..d9a5336fbfb --- /dev/null +++ b/llvm/test/Transforms/Reassociate/shifttest.ll @@ -0,0 +1,12 @@ +; With shl->mul reassociation, we can see that this is (shl A, 9) * A +; +; RUN: opt < %s -reassociate -instcombine -S |\ +; RUN: grep "shl .*, 9" + +define i32 @test(i32 %A, i32 %B) { + %X = shl i32 %A, 5 ; <i32> [#uses=1] + %Y = shl i32 %A, 4 ; <i32> [#uses=1] + %Z = mul i32 %Y, %X ; <i32> [#uses=1] + ret i32 %Z +} + |
