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; RUN: llc < %s -mtriple=powerpc-apple-darwin -march=ppc32 | FileCheck %s
define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind {
; CHECK-LABEL: exchange_and_add:
; CHECK: lwarx {{r[0-9]+}}, 0, {{r[0-9]+}}
%tmp = atomicrmw add i32* %mem, i32 %val monotonic
; CHECK: stwcx. {{r[0-9]+}}, 0, {{r[0-9]+}}
ret i32 %tmp
}
define i32 @exchange_and_cmp(i32* %mem) nounwind {
; CHECK-LABEL: exchange_and_cmp:
; CHECK: lwarx
%tmppair = cmpxchg i32* %mem, i32 0, i32 1 monotonic monotonic
%tmp = extractvalue { i32, i1 } %tmppair, 0
; CHECK: stwcx.
; CHECK: stwcx.
ret i32 %tmp
}
define i32 @exchange(i32* %mem, i32 %val) nounwind {
; CHECK-LABEL: exchange:
; CHECK: lwarx
%tmp = atomicrmw xchg i32* %mem, i32 1 monotonic
; CHECK: stwcx.
ret i32 %tmp
}
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