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ffa26401ac
This is D77454, except for stores. All the infrastructure work was done for loads, so the remaining changes necessary are relatively small. Differential Revision: https://reviews.llvm.org/D79968
41 lines
1.0 KiB
LLVM
41 lines
1.0 KiB
LLVM
; RUN: opt -codegenprepare -S -mtriple=x86_64 < %s | FileCheck %s
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@tmp = global i8 0
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; CHECK-LABEL: define void @foo() {
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define void @foo() {
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enter:
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; CHECK-NOT: !invariant.group
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; CHECK-NOT: @llvm.launder.invariant.group.p0i8(
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; CHECK: %val = load i8, i8* @tmp, align 1{{$}}
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%val = load i8, i8* @tmp, !invariant.group !0
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%ptr = call i8* @llvm.launder.invariant.group.p0i8(i8* @tmp)
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; CHECK: store i8 42, i8* @tmp, align 1{{$}}
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store i8 42, i8* %ptr, !invariant.group !0
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ret void
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}
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; CHECK-LABEL: }
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; CHECK-LABEL: define void @foo2() {
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define void @foo2() {
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enter:
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; CHECK-NOT: !invariant.group
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; CHECK-NOT: @llvm.strip.invariant.group.p0i8(
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; CHECK: %val = load i8, i8* @tmp, align 1{{$}}
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%val = load i8, i8* @tmp, !invariant.group !0
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%ptr = call i8* @llvm.strip.invariant.group.p0i8(i8* @tmp)
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; CHECK: store i8 42, i8* @tmp, align 1{{$}}
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store i8 42, i8* %ptr, !invariant.group !0
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ret void
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}
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; CHECK-LABEL: }
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declare i8* @llvm.launder.invariant.group.p0i8(i8*)
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declare i8* @llvm.strip.invariant.group.p0i8(i8*)
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!0 = !{}
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