1 ; RUN: llc < %s -mtriple=powerpc-apple-darwin -march=ppc32 | FileCheck %s 2 3 define 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 11 define 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 21 define 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
