| ; 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 |
| } |