1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=armv7-apple-ios -verify-machineinstrs | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workerdefine void @test_cmpxchg_weak(i32 *%addr, i32 %desired, i32 %new) { 4*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: test_cmpxchg_weak: 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker %pair = cmpxchg weak i32* %addr, i32 %desired, i32 %new seq_cst monotonic 7*9880d681SAndroid Build Coastguard Worker %oldval = extractvalue { i32, i1 } %pair, 0 8*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: BB#0: 9*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: ldrex [[LOADED:r[0-9]+]], [r0] 10*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: cmp [[LOADED]], r1 11*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bne [[LDFAILBB:LBB[0-9]+_[0-9]+]] 12*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: BB#1: 13*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: dmb ish 14*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: strex [[SUCCESS:r[0-9]+]], r2, [r0] 15*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: cmp [[SUCCESS]], #0 16*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bne [[FAILBB:LBB[0-9]+_[0-9]+]] 17*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: BB#2: 18*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: dmb ish 19*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: str r3, [r0] 20*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bx lr 21*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: [[LDFAILBB]]: 22*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: clrex 23*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: [[FAILBB]]: 24*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: str r3, [r0] 25*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bx lr 26*9880d681SAndroid Build Coastguard Worker 27*9880d681SAndroid Build Coastguard Worker store i32 %oldval, i32* %addr 28*9880d681SAndroid Build Coastguard Worker ret void 29*9880d681SAndroid Build Coastguard Worker} 30*9880d681SAndroid Build Coastguard Worker 31*9880d681SAndroid Build Coastguard Worker 32*9880d681SAndroid Build Coastguard Workerdefine i1 @test_cmpxchg_weak_to_bool(i32, i32 *%addr, i32 %desired, i32 %new) { 33*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: test_cmpxchg_weak_to_bool: 34*9880d681SAndroid Build Coastguard Worker 35*9880d681SAndroid Build Coastguard Worker %pair = cmpxchg weak i32* %addr, i32 %desired, i32 %new seq_cst monotonic 36*9880d681SAndroid Build Coastguard Worker %success = extractvalue { i32, i1 } %pair, 1 37*9880d681SAndroid Build Coastguard Worker 38*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: BB#0: 39*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: ldrex [[LOADED:r[0-9]+]], [r1] 40*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: cmp [[LOADED]], r2 41*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bne [[LDFAILBB:LBB[0-9]+_[0-9]+]] 42*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: BB#1: 43*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: dmb ish 44*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: mov r0, #0 45*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: strex [[SUCCESS:r[0-9]+]], r3, [r1] 46*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: cmp [[SUCCESS]], #0 47*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bxne lr 48*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: dmb ish 49*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: mov r0, #1 50*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bx lr 51*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: [[LDFAILBB]]: 52*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: clrex 53*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: mov r0, #0 54*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bx lr 55*9880d681SAndroid Build Coastguard Worker 56*9880d681SAndroid Build Coastguard Worker ret i1 %success 57*9880d681SAndroid Build Coastguard Worker} 58