r246385 - Make test resistant to false matches of numbered (unnamed) labels inside other numbers.

[Yaron Keren via cfe-commits]

Author: yrnkrn
Date: Sun Aug 30 10:24:46 2015
New Revision: 246385

URL: http://llvm.org/viewvc/llvm-project?rev=246385&view=rev
Log:
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.


Modified:
    cfe/trunk/test/CodeGen/sanitize-trap.c

Modified: cfe/trunk/test/CodeGen/sanitize-trap.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/sanitize-trap.c?rev=246385&r1=246384&r2=246385&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/sanitize-trap.c (original)
+++ cfe/trunk/test/CodeGen/sanitize-trap.c Sun Aug 30 10:24:46 2015
@@ -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;
 }