1 ; RUN: llc < %s -mcpu=corei7-avx -mtriple=x86_64-linux | FileCheck %s 2 3 ; CHECK-LABEL: cftx020: 4 ; CHECK: vmovsd (%rdi), %xmm{{.*}} 5 ; CHECK-NEXT: vmovsd 16(%rdi), %xmm{{.*}} 6 ; CHECK-NEXT: vmovhpd 24(%rdi), %xmm{{.*}} 7 ; CHECK-NEXT: vmovhpd 8(%rdi), %xmm{{.*}} 8 ; CHECK: vmovupd %xmm{{.*}}, (%rdi) 9 ; CHECK-NEXT: vmovupd %xmm{{.*}}, 16(%rdi) 10 ; CHECK: ret 11 12 ; A test from pifft (after SLP-vectorization) that fails when we drop the chain on newly merged loads. 13 define void @cftx020(double* nocapture %a) { 14 entry: 15 %0 = load double, double* %a, align 8 16 %arrayidx1 = getelementptr inbounds double, double* %a, i64 2 17 %1 = load double, double* %arrayidx1, align 8 18 %arrayidx2 = getelementptr inbounds double, double* %a, i64 1 19 %2 = load double, double* %arrayidx2, align 8 20 %arrayidx3 = getelementptr inbounds double, double* %a, i64 3 21 %3 = load double, double* %arrayidx3, align 8 22 %4 = insertelement <2 x double> undef, double %0, i32 0 23 %5 = insertelement <2 x double> %4, double %3, i32 1 24 %6 = insertelement <2 x double> undef, double %1, i32 0 25 %7 = insertelement <2 x double> %6, double %2, i32 1 26 %8 = fadd <2 x double> %5, %7 27 %9 = bitcast double* %a to <2 x double>* 28 store <2 x double> %8, <2 x double>* %9, align 8 29 %10 = insertelement <2 x double> undef, double %0, i32 0 30 %11 = insertelement <2 x double> %10, double %2, i32 1 31 %12 = insertelement <2 x double> undef, double %1, i32 0 32 %13 = insertelement <2 x double> %12, double %3, i32 1 33 %14 = fsub <2 x double> %11, %13 34 %15 = bitcast double* %arrayidx1 to <2 x double>* 35 store <2 x double> %14, <2 x double>* %15, align 8 36 ret void 37 } 38
