; CHECK: bne [[LOOP]]
; CHECK-NOT: cmp {{r[0-9]+}}, {{r[0-9]+}}
-; CHECK: movs r0, #1
; CHECK: dmb ish
+; CHECK: movs r0, #1
; CHECK: bx lr
; CHECK: [[FAILED]]:
; CHECK-NOT: cmp {{r[0-9]+}}, {{r[0-9]+}}
-; CHECK: movs r0, #0
; CHECK: dmb ish
+; CHECK: movs r0, #0
; CHECK: bx lr
- %loaded = cmpxchg i32* %p, i32 %oldval, i32 %newval seq_cst seq_cst
- %success = icmp eq i32 %loaded, %oldval
+ %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: uxtb [[OLDBYTE:r[0-9]+]], r1
; CHECK: dmb ishst
+; CHECK: uxtb [[OLDBYTE:r[0-9]+]], r1
; CHECK: [[LOOP:LBB[0-9]+_[0-9]+]]:
; CHECK: ldrexb [[LOADED:r[0-9]+]], [r0]
; CHECK: cmp [[LOADED]], [[OLDBYTE]]
-
-; CHECK: itt ne
-; CHECK: movne r0, #1
-; CHECK: bxne lr
+; CHECK: bne [[FAIL:LBB[0-9]+_[0-9]+]]
; CHECK: strexb [[STATUS:r[0-9]+]], {{r[0-9]+}}, [r0]
; CHECK: cmp [[STATUS]], #0
; CHECK: bne [[LOOP]]
+ ; FIXME: this eor is redundant. Need to teach DAG combine that.
; CHECK-NOT: cmp {{r[0-9]+}}, {{r[0-9]+}}
-; CHECK: movs r0, #0
+; CHECK: movs [[TMP:r[0-9]+]], #1
+; CHECK: eor r0, [[TMP]], #1
; CHECK: bx lr
- %loaded = cmpxchg i8* %value, i8 %oldValue, i8 %newValue acq_rel monotonic
- %failure = icmp ne i8 %loaded, %oldValue
+; CHECK: [[FAIL]]:
+; CHECK: movs [[TMP:r[0-9]+]], #0
+; CHECK: eor r0, [[TMP]], #1
+; CHECK: bx lr
+
+
+ %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
}
; CHECK: dmb ish
; CHECK: b.w _baz
- %loaded = cmpxchg i32* %p, i32 %oldval, i32 %newval seq_cst seq_cst
- %success = icmp eq i32 %loaded, %oldval
+ %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: