[clang] [llvm] [X86][MC] Added support for -msse2avx option in llvm-mc (PR #96860)

[Shengchen Kan via cfe-commits]

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@@ -0,0 +1,89 @@
+# RUN: %clang -march=x86-64 -msse2avx %s -c -o %t
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KanRobert wrote:

Do not add end2end test. Check test for other flags.

https://github.com/llvm/llvm-project/pull/96860