1 ; RUN: llc -verify-machineinstrs -mcpu=pwr8 -mtriple=powerpc64le-unknown-linux-gnu -O3 < %s | FileCheck %s 2 3 ; This test verifies that VSX swap optimization works for the 4 ; doubleword splat idiom. 5 6 @a = external global <2 x double>, align 16 7 @b = external global <2 x double>, align 16 8 9 define void @test(double %s) { 10 entry: 11 %0 = insertelement <2 x double> undef, double %s, i32 0 12 %1 = shufflevector <2 x double> %0, <2 x double> undef, <2 x i32> zeroinitializer 13 %2 = load <2 x double>, <2 x double>* @a, align 16 14 %3 = fadd <2 x double> %0, %2 15 store <2 x double> %3, <2 x double>* @b, align 16 16 ret void 17 } 18 19 ; CHECK-LABEL: @test 20 ; CHECK-DAG: xxspltd 21 ; CHECK-DAG: lxvd2x 22 ; CHECK: xvadddp 23 ; CHECK: stxvd2x 24 ; CHECK-NOT: xxswapd 25
