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9def2dd316
Power8 has MTVSRWZ but no LXSIBZX/LXSIHZX, so move 1 or 2 bytes to VSR through MTVSRWZ is much faster than store the extended value into stack and load it with LXSIWZX. This patch fixes pr31144. Differential Revision: https://reviews.llvm.org/D27287 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289473 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
532 B
LLVM
27 lines
532 B
LLVM
; RUN: llc -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 -mattr=+vsx < %s | FileCheck %s --implicit-check-not lxsiwzx
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declare void @bar(double)
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define void @foo1(i8* %p) {
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entry:
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%0 = load i8, i8* %p, align 1
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%conv = uitofp i8 %0 to double
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call void @bar(double %conv)
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ret void
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; CHECK-LABEL: @foo1
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; CHECK: mtvsrwz
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}
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define void @foo2(i16* %p) {
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entry:
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%0 = load i16, i16* %p, align 2
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%conv = uitofp i16 %0 to double
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call void @bar(double %conv)
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ret void
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; CHECK-LABEL: @foo2
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; CHECK: mtvsrwz
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}
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