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