[clang] [X86] Ignore invalid features in FMV priority (PR #172844)

[Phoebe Wang via cfe-commits]

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@@ -1371,7 +1371,9 @@ llvm::APInt X86TargetInfo::getFMVPriority(ArrayRef<StringRef> Features) const {
 
   unsigned Priority = 0;
   for (StringRef Feature : Features)
-    if (!Feature.empty())
+    if (!Feature.empty() &&
+        (llvm::X86::parseArchX86(Feature) != llvm::X86::CK_None ||
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phoebewang wrote:

This is checked in line 1363. Maybe move `validateCpuSupports(Feature)` check into getPriority?

https://github.com/llvm/llvm-project/pull/172844