1 ; RUN: llc -mtriple=aarch64-- -O0 -fast-isel -fast-isel-abort=4 -verify-machineinstrs < %s | FileCheck %s
3 ; CHECK-LABEL: cmpxchg_monotonic_32:
4 ; CHECK: mov [[ADDR:x[0-9]+]], x0
5 ; CHECK: [[RETRY:.LBB[0-9_]+]]:
6 ; CHECK-NEXT: ldaxr w0, [[[ADDR]]]
7 ; CHECK-NEXT: cmp w0, w1
8 ; CHECK-NEXT: b.ne [[DONE:.LBB[0-9_]+]]
9 ; CHECK-NEXT: // %bb.2:
10 ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], w2, [[[ADDR]]]
11 ; CHECK-NEXT: cbnz [[STATUS]], [[RETRY]]
12 ; CHECK-NEXT: [[DONE]]:
13 ; CHECK-NEXT: cmp w0, w1
14 ; CHECK-NEXT: cset [[STATUS]], eq
15 ; CHECK-NEXT: and [[STATUS32:w[0-9]+]], [[STATUS]], #0x1
16 ; CHECK-NEXT: str [[STATUS32]], [x3]
17 define i32 @cmpxchg_monotonic_32(ptr %p, i32 %cmp, i32 %new, ptr %ps) #0 {
18 %tmp0 = cmpxchg ptr %p, i32 %cmp, i32 %new monotonic monotonic
19 %tmp1 = extractvalue { i32, i1 } %tmp0, 0
20 %tmp2 = extractvalue { i32, i1 } %tmp0, 1
21 %tmp3 = zext i1 %tmp2 to i32
22 store i32 %tmp3, ptr %ps
26 ; CHECK-LABEL: cmpxchg_acq_rel_32_load:
28 ; CHECK: mov [[ADDR:x[0-9]+]], x0
29 ; CHECK: ldr [[NEW:w[0-9]+]], [x2]
30 ; CHECK-NEXT: [[RETRY:.LBB[0-9_]+]]:
31 ; CHECK-NEXT: ldaxr w0, [[[ADDR]]]
32 ; CHECK-NEXT: cmp w0, w1
33 ; CHECK-NEXT: b.ne [[DONE:.LBB[0-9_]+]]
34 ; CHECK-NEXT: // %bb.2:
35 ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [[[ADDR]]]
36 ; CHECK-NEXT: cbnz [[STATUS]], [[RETRY]]
37 ; CHECK-NEXT: [[DONE]]:
38 ; CHECK-NEXT: cmp w0, w1
39 ; CHECK-NEXT: cset [[STATUS]], eq
40 ; CHECK-NEXT: and [[STATUS32:w[0-9]+]], [[STATUS]], #0x1
41 ; CHECK-NEXT: str [[STATUS32]], [x3]
42 define i32 @cmpxchg_acq_rel_32_load(ptr %p, i32 %cmp, ptr %pnew, ptr %ps) #0 {
43 %new = load i32, ptr %pnew
44 %tmp0 = cmpxchg ptr %p, i32 %cmp, i32 %new acq_rel acquire
45 %tmp1 = extractvalue { i32, i1 } %tmp0, 0
46 %tmp2 = extractvalue { i32, i1 } %tmp0, 1
47 %tmp3 = zext i1 %tmp2 to i32
48 store i32 %tmp3, ptr %ps
52 ; CHECK-LABEL: cmpxchg_seq_cst_64:
53 ; CHECK: mov [[ADDR:x[0-9]+]], x0
54 ; CHECK: [[RETRY:.LBB[0-9_]+]]:
55 ; CHECK-NEXT: ldaxr x0, [[[ADDR]]]
56 ; CHECK-NEXT: cmp x0, x1
57 ; CHECK-NEXT: b.ne [[DONE:.LBB[0-9_]+]]
58 ; CHECK-NEXT: // %bb.2:
59 ; CHECK-NEXT: stlxr [[STATUS]], x2, [[[ADDR]]]
60 ; CHECK-NEXT: cbnz [[STATUS]], [[RETRY]]
61 ; CHECK-NEXT: [[DONE]]:
62 ; CHECK-NEXT: cmp x0, x1
63 ; CHECK-NEXT: cset [[STATUS:w[0-9]+]], eq
64 ; CHECK-NEXT: and [[STATUS32:w[0-9]+]], [[STATUS]], #0x1
65 ; CHECK-NEXT: str [[STATUS32]], [x3]
66 define i64 @cmpxchg_seq_cst_64(ptr %p, i64 %cmp, i64 %new, ptr %ps) #0 {
67 %tmp0 = cmpxchg ptr %p, i64 %cmp, i64 %new seq_cst seq_cst
68 %tmp1 = extractvalue { i64, i1 } %tmp0, 0
69 %tmp2 = extractvalue { i64, i1 } %tmp0, 1
70 %tmp3 = zext i1 %tmp2 to i32
71 store i32 %tmp3, ptr %ps
75 attributes #0 = { nounwind }