diff options
Diffstat (limited to 'test/CodeGen/sanitize-atomic-int-overflow.c')
| -rw-r--r-- | test/CodeGen/sanitize-atomic-int-overflow.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/CodeGen/sanitize-atomic-int-overflow.c b/test/CodeGen/sanitize-atomic-int-overflow.c new file mode 100644 index 0000000000..a1064f47c3 --- /dev/null +++ b/test/CodeGen/sanitize-atomic-int-overflow.c @@ -0,0 +1,33 @@ +// 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++; +} |