| ; RUN: llc -mtriple=aarch64-- -O0 -fast-isel -fast-isel-abort=4 -verify-machineinstrs < %s | FileCheck %s |
| |
| ; CHECK-LABEL: cmpxchg_monotonic_32: |
| ; CHECK: mov [[ADDR:x[0-9]+]], x0 |
| ; CHECK: [[RETRY:.LBB[0-9_]+]]: |
| ; CHECK-NEXT: ldaxr w0, [[[ADDR]]] |
| ; CHECK-NEXT: cmp w0, w1 |
| ; CHECK-NEXT: b.ne [[DONE:.LBB[0-9_]+]] |
| ; CHECK-NEXT: // %bb.2: |
| ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], w2, [[[ADDR]]] |
| ; CHECK-NEXT: cbnz [[STATUS]], [[RETRY]] |
| ; CHECK-NEXT: [[DONE]]: |
| ; CHECK-NEXT: cmp w0, w1 |
| ; CHECK-NEXT: cset [[STATUS]], eq |
| ; CHECK-NEXT: and [[STATUS32:w[0-9]+]], [[STATUS]], #0x1 |
| ; CHECK-NEXT: str [[STATUS32]], [x3] |
| define i32 @cmpxchg_monotonic_32(ptr %p, i32 %cmp, i32 %new, ptr %ps) #0 { |
| %tmp0 = cmpxchg ptr %p, i32 %cmp, i32 %new monotonic monotonic |
| %tmp1 = extractvalue { i32, i1 } %tmp0, 0 |
| %tmp2 = extractvalue { i32, i1 } %tmp0, 1 |
| %tmp3 = zext i1 %tmp2 to i32 |
| store i32 %tmp3, ptr %ps |
| ret i32 %tmp1 |
| } |
| |
| ; CHECK-LABEL: cmpxchg_acq_rel_32_load: |
| ; CHECK: // %bb.0: |
| ; CHECK: mov [[ADDR:x[0-9]+]], x0 |
| ; CHECK: ldr [[NEW:w[0-9]+]], [x2] |
| ; CHECK-NEXT: [[RETRY:.LBB[0-9_]+]]: |
| ; CHECK-NEXT: ldaxr w0, [[[ADDR]]] |
| ; CHECK-NEXT: cmp w0, w1 |
| ; CHECK-NEXT: b.ne [[DONE:.LBB[0-9_]+]] |
| ; CHECK-NEXT: // %bb.2: |
| ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [[[ADDR]]] |
| ; CHECK-NEXT: cbnz [[STATUS]], [[RETRY]] |
| ; CHECK-NEXT: [[DONE]]: |
| ; CHECK-NEXT: cmp w0, w1 |
| ; CHECK-NEXT: cset [[STATUS]], eq |
| ; CHECK-NEXT: and [[STATUS32:w[0-9]+]], [[STATUS]], #0x1 |
| ; CHECK-NEXT: str [[STATUS32]], [x3] |
| define i32 @cmpxchg_acq_rel_32_load(ptr %p, i32 %cmp, ptr %pnew, ptr %ps) #0 { |
| %new = load i32, ptr %pnew |
| %tmp0 = cmpxchg ptr %p, i32 %cmp, i32 %new acq_rel acquire |
| %tmp1 = extractvalue { i32, i1 } %tmp0, 0 |
| %tmp2 = extractvalue { i32, i1 } %tmp0, 1 |
| %tmp3 = zext i1 %tmp2 to i32 |
| store i32 %tmp3, ptr %ps |
| ret i32 %tmp1 |
| } |
| |
| ; CHECK-LABEL: cmpxchg_seq_cst_64: |
| ; CHECK: mov [[ADDR:x[0-9]+]], x0 |
| ; CHECK: [[RETRY:.LBB[0-9_]+]]: |
| ; CHECK-NEXT: ldaxr x0, [[[ADDR]]] |
| ; CHECK-NEXT: cmp x0, x1 |
| ; CHECK-NEXT: b.ne [[DONE:.LBB[0-9_]+]] |
| ; CHECK-NEXT: // %bb.2: |
| ; CHECK-NEXT: stlxr [[STATUS]], x2, [[[ADDR]]] |
| ; CHECK-NEXT: cbnz [[STATUS]], [[RETRY]] |
| ; CHECK-NEXT: [[DONE]]: |
| ; CHECK-NEXT: cmp x0, x1 |
| ; CHECK-NEXT: cset [[STATUS:w[0-9]+]], eq |
| ; CHECK-NEXT: and [[STATUS32:w[0-9]+]], [[STATUS]], #0x1 |
| ; CHECK-NEXT: str [[STATUS32]], [x3] |
| define i64 @cmpxchg_seq_cst_64(ptr %p, i64 %cmp, i64 %new, ptr %ps) #0 { |
| %tmp0 = cmpxchg ptr %p, i64 %cmp, i64 %new seq_cst seq_cst |
| %tmp1 = extractvalue { i64, i1 } %tmp0, 0 |
| %tmp2 = extractvalue { i64, i1 } %tmp0, 1 |
| %tmp3 = zext i1 %tmp2 to i32 |
| store i32 %tmp3, ptr %ps |
| ret i64 %tmp1 |
| } |
| |
| attributes #0 = { nounwind } |