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

[Shengchen Kan via cfe-commits]

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@@ -8359,6 +8359,9 @@ void ClangAs::AddX86TargetArgs(const ArgList &Args,
   addX86AlignBranchArgs(getToolChain().getDriver(), Args, CmdArgs,
                         /*IsLTO=*/false);
 
+  if (Args.hasFlag(options::OPT_msse2avx, options::OPT_mno_sse2avx, true))
+    Args.addOptInFlag(CmdArgs, options::OPT_msse2avx, options::OPT_mno_sse2avx);
+
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KanRobert wrote:

No need this if group is set correctly.

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