diff options
Diffstat (limited to 'test/Transforms/InstCombine/vec_shuffle.ll')
| -rw-r--r-- | test/Transforms/InstCombine/vec_shuffle.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/vec_shuffle.ll b/test/Transforms/InstCombine/vec_shuffle.ll index 5132a8ff9b..d4977fb807 100644 --- a/test/Transforms/InstCombine/vec_shuffle.ll +++ b/test/Transforms/InstCombine/vec_shuffle.ll @@ -87,3 +87,13 @@ define <4 x i8> @test9(<16 x i8> %tmp6) nounwind { %tmp9 = shufflevector <4 x i8> %tmp7, <4 x i8> undef, <4 x i32> < i32 3, i32 1, i32 2, i32 0 > ; <<4 x i8>> [#uses=1] ret <4 x i8> %tmp9 } + +; Redundant vector splats should be removed. Radar 8597790. +define <4 x i32> @test10(<4 x i32> %tmp5) nounwind { +; CHECK: @test10 +; CHECK-NEXT: shufflevector +; CHECK-NEXT: ret + %tmp6 = shufflevector <4 x i32> %tmp5, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef> + %tmp7 = shufflevector <4 x i32> %tmp6, <4 x i32> undef, <4 x i32> zeroinitializer + ret <4 x i32> %tmp7 +} |