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

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

>From 7684f9e6f99c30287f2822152dc83367a934d8b6 Mon Sep 17 00:00:00 2001
From: Jake Egan <jake.e...@ibm.com>
Date: Wed, 8 May 2024 15:09:46 -0400
Subject: [PATCH] [driver] Only check for unused plugin options

This fixes matching `clang: error: argument unused during compilation: 
'-Werror' [-Werror,-Wunused-command-line-argument]` on AIX.
---
 clang/test/Driver/plugin-driver-args.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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[^']*}}'

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