Make test resistant to false matches of numbered (unnamed) labels inside other numbers.

In release builds labels are numbers. Matching just the number may result
in false matches where the label is contained in other numbers, such as
14 inside [114 x i8]. A stricter match requiring start of line or > character
before the label avoids these false matches.

llvm-svn: 246385

1 files changed, 9 insertions, 4 deletions

diff --git a/clang/test/CodeGen/sanitize-trap.c b/clang/test/CodeGen/sanitize-trap.c
index 76ac1f0ad71..efb35a99c48 100644
--- a/clang/test/CodeGen/sanitize-trap.c
+++ b/clang/test/CodeGen/sanitize-trap.c
@@ -7,19 +7,24 @@ int f(int x, int y) {
   // CHECK: %[[B4:.*]] = or i1 %[[B2]], %[[B3]]
   // CHECK: br i1 %[[B1]], label %[[L1:[0-9a-z_.]*]], label %[[L2:[0-9a-z_.]*]]
 
-  // CHECK: [[L2]]
+  // {{^|>}} used to match both Debug form of the captured label
+  // cont:
+  // and Release form
+  // ; <label>14
+  // But avoids false matches inside other numbers such as [114 x i8].
+  // CHECK: {{^|>}}[[L2]]
   // CHECK-NEXT: call void @llvm.trap()
   // CHECK-NEXT: unreachable
 
-  // CHECK: [[L1]]
+  // CHECK: {{^|>}}[[L1]]
   // CHECK-NEXT: br i1 %[[B4]], label %[[L3:[0-9a-z_.]*]], label %[[L4:[0-9a-z_.]*]]
 
-  // CHECK: [[L4]]
+  // CHECK: {{^|>}}[[L4]]
   // CHECK-NEXT: zext
   // CHECK-NEXT: zext
   // CHECK-NEXT: __ubsan_handle_divrem_overflow
 
-  // CHECK: [[L3]]
+  // CHECK: {{^|>}}[[L3]]
   // CHECK-NEXT: sdiv i32 %[[N]], %[[D]]
   return x / y;
 }