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llvm-mirror/test/Transforms/LowerAtomic/atomic-swap.ll
2011-09-26 20:15:56 +00:00

24 lines
480 B
LLVM

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