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24 lines
480 B
LLVM
24 lines
480 B
LLVM
; RUN: opt < %s -loweratomic -S | FileCheck %s
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define i8 @cmpswap() {
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; CHECK: @cmpswap
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%i = alloca i8
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%j = cmpxchg i8* %i, i8 0, i8 42 monotonic
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; CHECK: [[INST:%[a-z0-9]+]] = load
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; CHECK-NEXT: icmp
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; CHECK-NEXT: select
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; CHECK-NEXT: store
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ret i8 %j
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; CHECK: ret i8 [[INST]]
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}
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define i8 @swap() {
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; CHECK: @swap
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%i = alloca i8
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%j = atomicrmw xchg i8* %i, i8 42 monotonic
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; CHECK: [[INST:%[a-z0-9]+]] = load
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; CHECK-NEXT: store
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ret i8 %j
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; CHECK: ret i8 [[INST]]
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}
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