[clang] [driver] Only check for unused plugin options (PR #91522)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang

@llvm/pr-subscribers-clang-driver

Author: Jake Egan (jakeegan)

<details>
<summary>Changes</summary>

This fixes matching `clang: error: argument unused during compilation: '-Werror' [-Werror,-Wunused-command-line-argument]` on AIX.

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Full diff: https://github.com/llvm/llvm-project/pull/91522.diff


1 Files Affected:

- (modified) clang/test/Driver/plugin-driver-args.cpp (+2-2) 


``````````diff
diff --git a/clang/test/Driver/plugin-driver-args.cpp b/clang/test/Driver/plugin-driver-args.cpp
index 6f0e6e2ba7525..7667cc4ce7b00 100644
--- a/clang/test/Driver/plugin-driver-args.cpp
+++ b/clang/test/Driver/plugin-driver-args.cpp
@@ -23,5 +23,5 @@
 
 // Plugins are only relevant for the -cc1 phase. No warning should be raised
 // when only using the assembler. See GH #88173.
-// RUN: %clang -c -fpass-plugin=bar.so -fplugin=bar.so -fplugin-arg-bar-option -Werror -x assembler %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-PLUGIN-ASM
-// CHECK-PLUGIN-ASM-NOT: argument unused during compilation
+// RUN: %clang -c -fpass-plugin=bar.so -fplugin=bar.so -fplugin-arg-bar-option -Wunused-command-line-argument -x assembler %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-PLUGIN-ASM
+// CHECK-PLUGIN-ASM-NOT: argument unused during compilation: '-f{{[a-z-]*-plugin[^']*}}'

``````````

</details>


https://github.com/llvm/llvm-project/pull/91522