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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 42; RUN: opt -passes=instcombine -S < %s | FileCheck %s3 4define void @test_undef(ptr %in_ptr, ptr %out_ptr) {5; CHECK-LABEL: define void @test_undef(6; CHECK-SAME: ptr [[IN_PTR:%.*]], ptr [[OUT_PTR:%.*]]) {7; CHECK-NEXT: [[A:%.*]] = load <4 x float>, ptr [[IN_PTR]], align 168; CHECK-NEXT: [[D:%.*]] = shufflevector <4 x float> [[A]], <4 x float> poison, <4 x i32> zeroinitializer9; CHECK-NEXT: store <4 x float> [[D]], ptr [[OUT_PTR]], align 1610; CHECK-NEXT: ret void11;12 %A = load <4 x float>, ptr %in_ptr, align 1613 %B = shufflevector <4 x float> %A, <4 x float> undef, <4 x i32> <i32 0, i32 0, i32 undef, i32 undef>14 %C = shufflevector <4 x float> %B, <4 x float> %A, <4 x i32> <i32 0, i32 1, i32 4, i32 undef>15 %D = shufflevector <4 x float> %C, <4 x float> %A, <4 x i32> <i32 0, i32 1, i32 2, i32 4>16 store <4 x float> %D, ptr %out_ptr17 ret void18}19 20define void @test_poison(ptr %in_ptr, ptr %out_ptr) {21; CHECK-LABEL: define void @test_poison(22; CHECK-SAME: ptr [[IN_PTR:%.*]], ptr [[OUT_PTR:%.*]]) {23; CHECK-NEXT: [[A:%.*]] = load <4 x float>, ptr [[IN_PTR]], align 1624; CHECK-NEXT: [[D:%.*]] = shufflevector <4 x float> [[A]], <4 x float> poison, <4 x i32> zeroinitializer25; CHECK-NEXT: store <4 x float> [[D]], ptr [[OUT_PTR]], align 1626; CHECK-NEXT: ret void27;28 %A = load <4 x float>, ptr %in_ptr, align 1629 %B = shufflevector <4 x float> %A, <4 x float> poison, <4 x i32> <i32 0, i32 0, i32 undef, i32 undef>30 %C = shufflevector <4 x float> %B, <4 x float> %A, <4 x i32> <i32 0, i32 1, i32 4, i32 undef>31 %D = shufflevector <4 x float> %C, <4 x float> %A, <4 x i32> <i32 0, i32 1, i32 2, i32 4>32 store <4 x float> %D, ptr %out_ptr33 ret void34}35