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| -rw-r--r-- | llvm/test/Transforms/InstSimplify/shr-scalar-vector-consistency.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstSimplify/shr-scalar-vector-consistency.ll b/llvm/test/Transforms/InstSimplify/shr-scalar-vector-consistency.ll new file mode 100644 index 00000000000..f1bba37ff99 --- /dev/null +++ b/llvm/test/Transforms/InstSimplify/shr-scalar-vector-consistency.ll @@ -0,0 +1,25 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -instsimplify -S | FileCheck %s + +; This tests checks optimization consistency for scalar and vector code. +; If m_Zero() is able to match a vector undef, but not a scalar undef, +; the two cases will simplify differently. + +define i32 @test_scalar(i32 %a, i1 %b) { +; CHECK-LABEL: @test_scalar( +; CHECK-NEXT: ret i32 undef +; + %c = sext i1 %b to i32 + %d = ashr i32 undef, %c + ret i32 %d +} + +define <2 x i32> @test_vector(<2 x i32> %a, <2 x i1> %b) { +; CHECK-LABEL: @test_vector( +; CHECK-NEXT: ret <2 x i32> zeroinitializer +; + %c = sext <2 x i1> %b to <2 x i32> + %d = ashr <2 x i32> undef, %c + ret <2 x i32> %d +} + |
