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; RUN: llc < %s -mcpu=corei7-avx -mtriple=x86_64-linux | FileCheck %s
; CHECK-LABEL: cftx020:
; CHECK: vmovsd (%rdi), %xmm{{.*}}
; CHECK-NEXT: vmovsd 16(%rdi), %xmm{{.*}}
; CHECK-NEXT: vmovhpd 24(%rdi), %xmm{{.*}}
; CHECK-NEXT: vmovhpd 8(%rdi), %xmm{{.*}}
; CHECK: vmovupd %xmm{{.*}}, (%rdi)
; CHECK-NEXT: vmovupd %xmm{{.*}}, 16(%rdi)
; CHECK: ret
; A test from pifft (after SLP-vectorization) that fails when we drop the chain on newly merged loads.
define void @cftx020(double* nocapture %a) {
entry:
%0 = load double, double* %a, align 8
%arrayidx1 = getelementptr inbounds double, double* %a, i64 2
%1 = load double, double* %arrayidx1, align 8
%arrayidx2 = getelementptr inbounds double, double* %a, i64 1
%2 = load double, double* %arrayidx2, align 8
%arrayidx3 = getelementptr inbounds double, double* %a, i64 3
%3 = load double, double* %arrayidx3, align 8
%4 = insertelement <2 x double> undef, double %0, i32 0
%5 = insertelement <2 x double> %4, double %3, i32 1
%6 = insertelement <2 x double> undef, double %1, i32 0
%7 = insertelement <2 x double> %6, double %2, i32 1
%8 = fadd <2 x double> %5, %7
%9 = bitcast double* %a to <2 x double>*
store <2 x double> %8, <2 x double>* %9, align 8
%10 = insertelement <2 x double> undef, double %0, i32 0
%11 = insertelement <2 x double> %10, double %2, i32 1
%12 = insertelement <2 x double> undef, double %1, i32 0
%13 = insertelement <2 x double> %12, double %3, i32 1
%14 = fsub <2 x double> %11, %13
%15 = bitcast double* %arrayidx1 to <2 x double>*
store <2 x double> %14, <2 x double>* %15, align 8
ret void
}
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