r367176 - Attempt to make test in r367165 more robust.

[Nico Weber via cfe-commits]

Author: nico
Date: Sat Jul 27 09:57:19 2019
New Revision: 367176

URL: http://llvm.org/viewvc/llvm-project?rev=367176&view=rev
Log:
Attempt to make test in r367165 more robust.

Some people were seeing this failure:

```
: 'RUN: at line 83';   clang -mrelax-all -fno-integrated-as /b/s/w/ir/k/llvm-project/clang/test/Driver/as-options.s -S 2>&1 \
         | /FileCheck --check-prefix=WARN --allow-empty clang/test/Driver/as-options.s
--
Exit Code: 1

Command Output (stderr):
--
clang/test/Driver/as-options.s:66:16: error: NOWARN-NOT: excluded string found in input
// NOWARN-NOT: unused
               ^
<stdin>:1:95: note: found here
clang-10: warning: clang/test/Driver/as-options.s: 'assembler' input unused [-Wunused-command-line-argument]
```

Maybe this helps with that.

Modified:
    cfe/trunk/test/Driver/as-options.s

Modified: cfe/trunk/test/Driver/as-options.s
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/as-options.s?rev=367176&r1=367175&r2=367176&view=diff
==============================================================================
--- cfe/trunk/test/Driver/as-options.s (original)
+++ cfe/trunk/test/Driver/as-options.s Sat Jul 27 09:57:19 2019
@@ -78,8 +78,8 @@
 
 // But -m flags for the integrated assembler _should_ warn if the integrated
 // assembler is not in use.
-// RUN: %clang -mrelax-all -fintegrated-as %s -S 2>&1 \
+// RUN: %clang -mrelax-all -fintegrated-as -x c++ %s -S 2>&1 \
 // RUN:   | FileCheck --check-prefix=NOWARN --allow-empty %s
-// RUN: %clang -mrelax-all -fno-integrated-as %s -S 2>&1 \
+// RUN: %clang -mrelax-all -fno-integrated-as -x c++ %s -S 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN --allow-empty %s
 // WARN: unused