[clang] Make the `CHECK` lines here resistent to `chandlerc` (PR #118736)

[Chandler Carruth via cfe-commits]

https://github.com/chandlerc created https://github.com/llvm/llvm-project/pull/118736

Specifically, usernames containing `handle`, such as `chandlerc`, often end up in paths, including the path of this test file which contains the word `overflow`. Combined, they create a match for `handle.*overflow` in the filename on my system (but likely not many others), leading this test to mysteriously fail for unfortunate usernames like mine. =D

No discussion of the amount of time I spent debugging this please. =[

>From 46633593ab1c6a7c997832b45872250f09dbc06a Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc at gmail.com>
Date: Thu, 5 Dec 2024 03:11:42 +0000
Subject: [PATCH] Make the `CHECK` lines here resistent to `chandlerc`

Specifically, usernames containing `handle`, such as `chandlerc`, often
end up in paths, including the path of this test file which contains the
word `overflow`. Combined, they create a match for `handle.*overflow` in
the filename on my system (but likely not many others), leading this
test to mysteriously fail for unfortunate usernames like mine. =D

No discussion of the amount of time I spent debugging this please. =[
---
 clang/test/CodeGen/ignore-overflow-pattern.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/clang/test/CodeGen/ignore-overflow-pattern.c b/clang/test/CodeGen/ignore-overflow-pattern.c
index c4a9d07b07aaac..4e5ed82d7967ec 100644
--- a/clang/test/CodeGen/ignore-overflow-pattern.c
+++ b/clang/test/CodeGen/ignore-overflow-pattern.c
@@ -21,7 +21,10 @@
 // unsigned negation, for example:
 // unsigned long A = -1UL;
 
+// Skip over parts of the IR containing this file's name.
+// CHECK: source_filename = {{.*}}
 
+// Ensure we don't see anything about handling overflow before the tests below.
 // CHECK-NOT: handle{{.*}}overflow
 
 extern unsigned a, b, c;