[clang] [X86] Support -march=pantherlake, clearwaterforest (PR #69277)

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git-clang-format --diff ce9eaf0360d9f528ab061bcdbcf81c5b2155f098 9e673f332b8f7a3cfdeb1a73f6a77aee651f7664 -- clang/lib/Basic/Targets/X86.cpp clang/test/CodeGen/attr-cpuspecific-cpus.c clang/test/CodeGen/attr-target-mv.c clang/test/CodeGen/target-builtin-noerror.c clang/test/Driver/x86-march.c clang/test/Misc/target-invalid-cpu-note.c clang/test/Preprocessor/predefined-arch-macros.c compiler-rt/lib/builtins/cpu_model.c llvm/include/llvm/TargetParser/X86TargetParser.h llvm/lib/TargetParser/Host.cpp llvm/lib/TargetParser/X86TargetParser.cpp
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diff --git a/llvm/lib/TargetParser/X86TargetParser.cpp b/llvm/lib/TargetParser/X86TargetParser.cpp
index a4da99b32..294273e01 100644
--- a/llvm/lib/TargetParser/X86TargetParser.cpp
+++ b/llvm/lib/TargetParser/X86TargetParser.cpp
@@ -166,10 +166,10 @@ constexpr FeatureBitset FeaturesGrandridge =
     FeaturesSierraforest | FeatureRAOINT;
 constexpr FeatureBitset FeaturesArrowlakeS = FeaturesSierraforest |
     FeatureAVXVNNIINT16 | FeatureSHA512 | FeatureSM3 | FeatureSM4;
-constexpr FeatureBitset FeaturesPantherlake = FeaturesArrowlakeS |
-    FeaturePREFETCHI;
-constexpr FeatureBitset FeaturesClearwaterforest = FeaturesArrowlakeS |
-    FeatureUSERMSR | FeaturePREFETCHI;
+constexpr FeatureBitset FeaturesPantherlake =
+    FeaturesArrowlakeS | FeaturePREFETCHI;
+constexpr FeatureBitset FeaturesClearwaterforest =
+    FeaturesArrowlakeS | FeatureUSERMSR | FeaturePREFETCHI;
 
 // Geode Processor.
 constexpr FeatureBitset FeaturesGeode =

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https://github.com/llvm/llvm-project/pull/69277