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.p0(
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; CHECK: %val = load i8, ptr @tmp, align 1{{$}}
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%val = load i8, ptr @tmp, !invariant.group !0
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%ptr = call ptr @llvm.launder.invariant.group.p0(ptr @tmp)
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; CHECK: store i8 42, ptr @tmp, align 1{{$}}
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store i8 42, ptr %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.p0(
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; CHECK: %val = load i8, ptr @tmp, align 1{{$}}
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%val = load i8, ptr @tmp, !invariant.group !0
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%ptr = call ptr @llvm.strip.invariant.group.p0(ptr @tmp)
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; CHECK: store i8 42, ptr @tmp, align 1{{$}}
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store i8 42, ptr %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 ptr @llvm.launder.invariant.group.p0(ptr)
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declare ptr @llvm.strip.invariant.group.p0(ptr)
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!0 = !{}
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