24 lines
480 B
LLVM
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]]
|
||
|
|
}
|