25 lines
734 B
LLVM
25 lines
734 B
LLVM
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; RUN: llc -verify-machineinstrs -mcpu=pwr8 -mtriple=powerpc64le-unknown-linux-gnu -O3 < %s | FileCheck %s
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; This test verifies that VSX swap optimization works for the
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; doubleword splat idiom.
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@a = external global <2 x double>, align 16
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@b = external global <2 x double>, align 16
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define void @test(double %s) {
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entry:
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%0 = insertelement <2 x double> undef, double %s, i32 0
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%1 = shufflevector <2 x double> %0, <2 x double> undef, <2 x i32> zeroinitializer
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%2 = load <2 x double>, <2 x double>* @a, align 16
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%3 = fadd <2 x double> %0, %2
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store <2 x double> %3, <2 x double>* @b, align 16
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ret void
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}
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; CHECK-LABEL: @test
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; CHECK-DAG: xxspltd
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; CHECK-DAG: lxvd2x
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; CHECK: xvadddp
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; CHECK: stxvd2x
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; CHECK-NOT: xxswapd
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