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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=x86_64-- -mattr=avx  | FileCheck %s
3
4; Eliminating a shuffle means we have to replace an undef operand of a horizontal op.
5
6define void @PR43225(<4 x double>* %p0, <4 x double>* %p1, <4 x double> %x, <4 x double> %y, <4 x double> %z) nounwind {
7; CHECK-LABEL: PR43225:
8; CHECK:       # %bb.0:
9; CHECK-NEXT:    vmovaps (%rdi), %ymm0
10; CHECK-NEXT:    vmovaps (%rsi), %ymm0
11; CHECK-NEXT:    vhsubpd %ymm2, %ymm2, %ymm0
12; CHECK-NEXT:    vmovapd %ymm0, (%rdi)
13; CHECK-NEXT:    vzeroupper
14; CHECK-NEXT:    retq
15  %t39 = load volatile <4 x double>, <4 x double>* %p0, align 32
16  %shuffle11 = shufflevector <4 x double> %t39, <4 x double> %x, <4 x i32> <i32 1, i32 5, i32 3, i32 7>
17  %t40 = load volatile <4 x double>, <4 x double>* %p1, align 32
18  %t41 = tail call <4 x double> @llvm.x86.avx.hadd.pd.256(<4 x double> %shuffle11, <4 x double> %t40)
19  %t42 = tail call <4 x double> @llvm.x86.avx.hsub.pd.256(<4 x double> %z, <4 x double> %t41)
20  %shuffle12 = shufflevector <4 x double> %t42, <4 x double> undef, <4 x i32> <i32 0, i32 0, i32 2, i32 2>
21  store volatile <4 x double> %shuffle12, <4 x double>* %p0, align 32
22  ret void
23}
24
25declare <4 x double> @llvm.x86.avx.hadd.pd.256(<4 x double>, <4 x double>)
26declare <4 x double> @llvm.x86.avx.hsub.pd.256(<4 x double>, <4 x double>)
27