[clang] [X86] Support apxf in attribute target (PR #184078)

[Phoebe Wang via cfe-commits]

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@@ -1169,14 +1194,7 @@ bool X86TargetInfo::isValidFeatureName(StringRef Name) const {
       .Case("xsavec", true)
       .Case("xsaves", true)
       .Case("xsaveopt", true)
-      .Case("egpr", true)
-      .Case("push2pop2", true)
-      .Case("ppx", true)
-      .Case("ndd", true)
-      .Case("ccmp", true)
-      .Case("nf", true)
-      .Case("cf", true)
-      .Case("zu", true)
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phoebewang wrote:

Won't this cause single feature fail when using -mapx-features=xxx?

https://github.com/llvm/llvm-project/pull/184078