1; RUN: llc -mtriple=aarch64-- -O0 -fast-isel -fast-isel-abort=4 -verify-machineinstrs < %s | FileCheck %s 2 3; CHECK-LABEL: cmpxchg_monotonic_32: 4; CHECK: [[RETRY:.LBB[0-9_]+]]: 5; CHECK-NEXT: mov [[STATUS:w[0-9]+]], #0 6; CHECK-NEXT: ldaxr [[OLD:w[0-9]+]], [x0] 7; CHECK-NEXT: cmp [[OLD]], w1 8; CHECK-NEXT: b.ne [[DONE:.LBB[0-9_]+]] 9; CHECK-NEXT: // %bb.2: 10; CHECK-NEXT: stlxr [[STATUS]], w2, [x0] 11; CHECK-NEXT: cbnz [[STATUS]], [[RETRY]] 12; CHECK-NEXT: [[DONE]]: 13; CHECK-NEXT: cmp [[OLD]], w1 14; CHECK-NEXT: cset [[STATUS:w[0-9]+]], eq 15; CHECK-NEXT: and [[STATUS32:w[0-9]+]], [[STATUS]], #0x1 16; CHECK-NEXT: str [[STATUS32]], [x3] 17; CHECK-NEXT: mov w0, [[OLD]] 18define i32 @cmpxchg_monotonic_32(i32* %p, i32 %cmp, i32 %new, i32* %ps) #0 { 19 %tmp0 = cmpxchg i32* %p, i32 %cmp, i32 %new monotonic monotonic 20 %tmp1 = extractvalue { i32, i1 } %tmp0, 0 21 %tmp2 = extractvalue { i32, i1 } %tmp0, 1 22 %tmp3 = zext i1 %tmp2 to i32 23 store i32 %tmp3, i32* %ps 24 ret i32 %tmp1 25} 26 27; CHECK-LABEL: cmpxchg_acq_rel_32_load: 28; CHECK: // %bb.0: 29; CHECK: ldr [[NEW:w[0-9]+]], [x2] 30; CHECK-NEXT: [[RETRY:.LBB[0-9_]+]]: 31; CHECK-NEXT: mov [[STATUS:w[0-9]+]], #0 32; CHECK-NEXT: ldaxr [[OLD:w[0-9]+]], [x0] 33; CHECK-NEXT: cmp [[OLD]], w1 34; CHECK-NEXT: b.ne [[DONE:.LBB[0-9_]+]] 35; CHECK-NEXT: // %bb.2: 36; CHECK-NEXT: stlxr [[STATUS]], [[NEW]], [x0] 37; CHECK-NEXT: cbnz [[STATUS]], [[RETRY]] 38; CHECK-NEXT: [[DONE]]: 39; CHECK-NEXT: cmp [[OLD]], w1 40; CHECK-NEXT: cset [[STATUS:w[0-9]+]], eq 41; CHECK-NEXT: and [[STATUS32:w[0-9]+]], [[STATUS]], #0x1 42; CHECK-NEXT: str [[STATUS32]], [x3] 43; CHECK-NEXT: mov w0, [[OLD]] 44define i32 @cmpxchg_acq_rel_32_load(i32* %p, i32 %cmp, i32* %pnew, i32* %ps) #0 { 45 %new = load i32, i32* %pnew 46 %tmp0 = cmpxchg i32* %p, i32 %cmp, i32 %new acq_rel acquire 47 %tmp1 = extractvalue { i32, i1 } %tmp0, 0 48 %tmp2 = extractvalue { i32, i1 } %tmp0, 1 49 %tmp3 = zext i1 %tmp2 to i32 50 store i32 %tmp3, i32* %ps 51 ret i32 %tmp1 52} 53 54; CHECK-LABEL: cmpxchg_seq_cst_64: 55; CHECK: [[RETRY:.LBB[0-9_]+]]: 56; CHECK-NEXT: mov [[STATUS:w[0-9]+]], #0 57; CHECK-NEXT: ldaxr [[OLD:x[0-9]+]], [x0] 58; CHECK-NEXT: cmp [[OLD]], x1 59; CHECK-NEXT: b.ne [[DONE:.LBB[0-9_]+]] 60; CHECK-NEXT: // %bb.2: 61; CHECK-NEXT: stlxr [[STATUS]], x2, [x0] 62; CHECK-NEXT: cbnz [[STATUS]], [[RETRY]] 63; CHECK-NEXT: [[DONE]]: 64; CHECK-NEXT: cmp [[OLD]], x1 65; CHECK-NEXT: cset [[STATUS:w[0-9]+]], eq 66; CHECK-NEXT: and [[STATUS32:w[0-9]+]], [[STATUS]], #0x1 67; CHECK-NEXT: str [[STATUS32]], [x3] 68; CHECK-NEXT: mov x0, [[OLD]] 69define i64 @cmpxchg_seq_cst_64(i64* %p, i64 %cmp, i64 %new, i32* %ps) #0 { 70 %tmp0 = cmpxchg i64* %p, i64 %cmp, i64 %new seq_cst seq_cst 71 %tmp1 = extractvalue { i64, i1 } %tmp0, 0 72 %tmp2 = extractvalue { i64, i1 } %tmp0, 1 73 %tmp3 = zext i1 %tmp2 to i32 74 store i32 %tmp3, i32* %ps 75 ret i64 %tmp1 76} 77 78attributes #0 = { nounwind } 79