[clang] [llvm] [X86][APX] Disable PP2/PPX generation on Windows (PR #178122)

[Simon Pilgrim via llvm-commits]

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@@ -2167,8 +2167,10 @@ StringMap<bool> sys::getHostCPUFeatures() {
   bool HasAVX10 = HasLeaf7Subleaf1 && ((EDX >> 19) & 1);
   bool HasAPXF = HasLeaf7Subleaf1 && ((EDX >> 21) & 1) && HasAPXSave;
   Features["egpr"] = HasAPXF;
+#ifndef _WIN32
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RKSimon wrote:

Comments? Is there a plan to support this in the future? 

Ideally we wouldn't filter the host cpu features by OS like this - but I'm not sure what alternatives there are?

https://github.com/llvm/llvm-project/pull/178122