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; RUN: llc < %s -march=ppc32 | FileCheck %s
define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind {
; CHECK: exchange_and_add:
; CHECK: lwarx
%tmp = atomicrmw add i32* %mem, i32 %val monotonic
; CHECK: stwcx.
ret i32 %tmp
}
define i32 @exchange_and_cmp(i32* %mem) nounwind {
; CHECK: exchange_and_cmp:
; CHECK: lwarx
%tmp = cmpxchg i32* %mem, i32 0, i32 1 monotonic
; CHECK: stwcx.
; CHECK: stwcx.
ret i32 %tmp
}
define i32 @exchange(i32* %mem, i32 %val) nounwind {
; CHECK: exchange:
; CHECK: lwarx
%tmp = atomicrmw xchg i32* %mem, i32 1 monotonic
; CHECK: stwcx.
ret i32 %tmp
}
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