; RUN: llc -mtriple=aarch64-apple-ios7.0 -o - %s | FileCheck %s define i32 @test_return(i32* %p, i32 %oldval, i32 %newval) { ; CHECK-LABEL: test_return: ; CHECK: [[LOOP:LBB[0-9]+_[0-9]+]]: ; CHECK: ldaxr [[LOADED:w[0-9]+]], [x0] ; CHECK: cmp [[LOADED]], w1 ; CHECK: b.ne [[FAILED:LBB[0-9]+_[0-9]+]] ; CHECK: stlxr [[STATUS:w[0-9]+]], {{w[0-9]+}}, [x0] ; CHECK: cbnz [[STATUS]], [[LOOP]] ; CHECK-NOT: cmp {{w[0-9]+}}, {{w[0-9]+}} ; CHECK: orr w0, wzr, #0x1 ; CHECK: ret ; CHECK: [[FAILED]]: ; CHECK-NOT: cmp {{w[0-9]+}}, {{w[0-9]+}} ; CHECK: mov w0, wzr ; CHECK: ret %pair = cmpxchg i32* %p, i32 %oldval, i32 %newval seq_cst seq_cst %success = extractvalue { i32, i1 } %pair, 1 %conv = zext i1 %success to i32 ret i32 %conv } define i1 @test_return_bool(i8* %value, i8 %oldValue, i8 %newValue) { ; CHECK-LABEL: test_return_bool: ; CHECK: [[LOOP:LBB[0-9]+_[0-9]+]]: ; CHECK: ldaxrb [[LOADED:w[0-9]+]], [x0] ; CHECK: cmp [[LOADED]], w1, uxtb ; CHECK: b.ne [[FAILED:LBB[0-9]+_[0-9]+]] ; CHECK: stlxrb [[STATUS:w[0-9]+]], {{w[0-9]+}}, [x0] ; CHECK: cbnz [[STATUS]], [[LOOP]] ; CHECK-NOT: cmp {{w[0-9]+}}, {{w[0-9]+}} ; FIXME: DAG combine should be able to deal with this. ; CHECK: orr [[TMP:w[0-9]+]], wzr, #0x1 ; CHECK: eor w0, [[TMP]], #0x1 ; CHECK: ret ; CHECK: [[FAILED]]: ; CHECK-NOT: cmp {{w[0-9]+}}, {{w[0-9]+}} ; CHECK: mov [[TMP:w[0-9]+]], wzr ; CHECK: eor w0, [[TMP]], #0x1 ; CHECK: ret %pair = cmpxchg i8* %value, i8 %oldValue, i8 %newValue acq_rel monotonic %success = extractvalue { i8, i1 } %pair, 1 %failure = xor i1 %success, 1 ret i1 %failure } define void @test_conditional(i32* %p, i32 %oldval, i32 %newval) { ; CHECK-LABEL: test_conditional: ; CHECK: [[LOOP:LBB[0-9]+_[0-9]+]]: ; CHECK: ldaxr [[LOADED:w[0-9]+]], [x0] ; CHECK: cmp [[LOADED]], w1 ; CHECK: b.ne [[FAILED:LBB[0-9]+_[0-9]+]] ; CHECK: stlxr [[STATUS:w[0-9]+]], w2, [x0] ; CHECK: cbnz [[STATUS]], [[LOOP]] ; CHECK-NOT: cmp {{w[0-9]+}}, {{w[0-9]+}} ; CHECK: b _bar ; CHECK: [[FAILED]]: ; CHECK-NOT: cmp {{w[0-9]+}}, {{w[0-9]+}} ; CHECK: b _baz %pair = cmpxchg i32* %p, i32 %oldval, i32 %newval seq_cst seq_cst %success = extractvalue { i32, i1 } %pair, 1 br i1 %success, label %true, label %false true: tail call void @bar() #2 br label %end false: tail call void @baz() #2 br label %end end: ret void } declare void @bar() declare void @baz()