maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

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
This commit is contained in:
Yaron Keren 2015-08-30 15:24:46 +00:00
parent fc600dc2ec
commit 43e184ee0c
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
clang/test/CodeGen/sanitize-trap.c
View File

@ -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;
}