[clang] [X86] Emit Warnings for frontend options to enable knl/knm specific ISAs. (PR #75580)

[Freddy Ye via cfe-commits]

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@@ -69,7 +69,10 @@
 // RUN: %clang_cl -m32 -arch:avx2 --target=i386-pc-windows -### -- 2>&1 %s | FileCheck -check-prefix=avx2 %s
 // avx2: invalid /arch: argument
 
-// RUN: %clang_cl -m32 -arch:AVX512F --target=i386-pc-windows /c /Fo%t.obj -Xclang -verify -DTEST_32_ARCH_AVX512F -- %s
+// RUN: %clang_cl -m32 -arch:AVX512F --target=i386-pc-windows /c /Fo%t.obj -Xclang -verify=KNL1 -DTEST_32_ARCH_AVX512F -- %s
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FreddyLeaf wrote:

AVX512F will be handled as "knl" in driver

https://github.com/llvm/llvm-project/pull/75580