1; RUN: llc < %s -mtriple=powerpc-apple-darwin -march=ppc32 | FileCheck %s 2 3define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind { 4; CHECK-LABEL: exchange_and_add: 5; CHECK: lwarx {{r[0-9]+}}, 0, {{r[0-9]+}} 6 %tmp = atomicrmw add i32* %mem, i32 %val monotonic 7; CHECK: stwcx. {{r[0-9]+}}, 0, {{r[0-9]+}} 8 ret i32 %tmp 9} 10 11define i32 @exchange_and_cmp(i32* %mem) nounwind { 12; CHECK-LABEL: exchange_and_cmp: 13; CHECK: lwarx 14 %tmppair = cmpxchg i32* %mem, i32 0, i32 1 monotonic monotonic 15 %tmp = extractvalue { i32, i1 } %tmppair, 0 16; CHECK: stwcx. 17; CHECK: stwcx. 18 ret i32 %tmp 19} 20 21define i32 @exchange(i32* %mem, i32 %val) nounwind { 22; CHECK-LABEL: exchange: 23; CHECK: lwarx 24 %tmp = atomicrmw xchg i32* %mem, i32 1 monotonic 25; CHECK: stwcx. 26 ret i32 %tmp 27} 28