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; RUN: opt -passes=instcombine -S < %s | FileCheck %s
define void @test(ptr %in_ptr, ptr %out_ptr) {
%A = load <4 x float>, ptr %in_ptr, align 16
%B = shufflevector <4 x float> %A, <4 x float> undef, <4 x i32> <i32 0, i32 0, i32 undef, i32 undef>
%C = shufflevector <4 x float> %B, <4 x float> %A, <4 x i32> <i32 0, i32 1, i32 4, i32 undef>
%D = shufflevector <4 x float> %C, <4 x float> %A, <4 x i32> <i32 0, i32 1, i32 2, i32 4>
; CHECK: %D = shufflevector <4 x float> %A, <4 x float> poison, <4 x i32> zeroinitializer
store <4 x float> %D, ptr %out_ptr
ret void
}
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