| // RUN: %clang_cc1 -triple x86_64-apple-macosx10.14.0 -fsanitize=unsigned-integer-overflow %s -emit-llvm -o - | FileCheck %s |
| |
| _Atomic(unsigned) atomic; |
| |
| // CHECK-LABEL: define{{.*}} void @cmpd_assign |
| void cmpd_assign() { |
| // CHECK: br label %[[LOOP_START:.*]] |
| |
| // CHECK: [[LOOP_START]]: |
| // CHECK-NEXT: phi i32 {{.*}}, [ {{.*}}, %[[INCOMING_BLOCK:.*]] ] |
| |
| // CHECK: [[INCOMING_BLOCK]]: |
| // CHECK-NEXT: cmpxchg |
| // CHECK-NEXT: extractvalue |
| // CHECK-NEXT: extractvalue |
| // CHECK-NEXT: br i1 %8, label %{{.*}}, label %[[LOOP_START]] |
| atomic += 1; |
| } |
| |
| // CHECK-LABEL: define{{.*}} void @inc |
| void inc() { |
| // CHECK: br label %[[LOOP_START:.*]] |
| |
| // CHECK: [[LOOP_START]]: |
| // CHECK-NEXT: phi i32 {{.*}}, [ {{.*}}, %[[INCOMING_BLOCK:.*]] ] |
| |
| // CHECK: [[INCOMING_BLOCK]]: |
| // CHECK-NEXT: cmpxchg |
| // CHECK-NEXT: extractvalue |
| // CHECK-NEXT: extractvalue |
| // CHECK-NEXT: br i1 %8, label %{{.*}}, label %[[LOOP_START]] |
| atomic++; |
| } |
