[COFF] [CodeView] Add a few new enum values

[mstorsjo]

Summary

These are undocumented, but are visible in the SDK headers since some
versions ago.

[smeenai]

LGTM

Would we want tests for the cpp file changes?

[mstorsjo]

In D105513#2860764, @smeenai wrote:

Would we want tests for the cpp file changes?

Hmm, as long as it just adds constants without any more specific logic I kinda wouldn't bother (I'm sure we don't have test coverage for all enum values that can be printed anyway)...

llvm/include/llvm/BinaryFormat/COFF.h

struct AuxiliaryWeakExternal {
   uint32_t TagIndex;
   uint32_t Characteristics;
   uint8_t unused[10];
 };
 
 enum WeakExternalCharacteristics : unsigned {
   IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY = 1,
   IMAGE_WEAK_EXTERN_SEARCH_LIBRARY = 2,
-  IMAGE_WEAK_EXTERN_SEARCH_ALIAS = 3
+  IMAGE_WEAK_EXTERN_SEARCH_ALIAS = 3,
+  IMAGE_WEAK_EXTERN_ANTI_DEPENDENCY = 4
 };
 
 struct AuxiliarySectionDefinition {
   uint32_t Length;
   uint16_t NumberOfRelocations;
   uint16_t NumberOfLinenumbers;
   uint32_t CheckSum;
   uint32_t Number;

llvm/include/llvm/DebugInfo/CodeView/CodeView.h

enum class CPUType : uint16_t {
   AM33 = 0xa0,
   M32R = 0xb0,
   TriCore = 0xc0,
   X64 = 0xd0,
   EBC = 0xe0,
   Thumb = 0xf0,
   ARMNT = 0xf4,
   ARM64 = 0xf6,
+  HybridX86ARM64 = 0xf7,
+  ARM64EC = 0xf8,
+  ARM64X = 0xf9,
   D3D11_Shader = 0x100,
 };
 
 /// These values correspond to the CV_CFL_LANG enumeration, and are documented
 /// here: https://msdn.microsoft.com/en-us/library/bw3aekw6.aspx
 enum SourceLanguage : uint8_t {
   C = 0x00,
   Cpp = 0x01,

llvm/lib/DebugInfo/CodeView/EnumTables.cpp

static const EnumEntry<unsigned> CPUTypeNames[] = {
     CV_ENUM_CLASS_ENT(CPUType, AM33),
     CV_ENUM_CLASS_ENT(CPUType, M32R),
     CV_ENUM_CLASS_ENT(CPUType, TriCore),
     CV_ENUM_CLASS_ENT(CPUType, X64),
     CV_ENUM_CLASS_ENT(CPUType, EBC),
     CV_ENUM_CLASS_ENT(CPUType, Thumb),
     CV_ENUM_CLASS_ENT(CPUType, ARMNT),
     CV_ENUM_CLASS_ENT(CPUType, ARM64),
+    CV_ENUM_CLASS_ENT(CPUType, HybridX86ARM64),
+    CV_ENUM_CLASS_ENT(CPUType, ARM64EC),
+    CV_ENUM_CLASS_ENT(CPUType, ARM64X),
     CV_ENUM_CLASS_ENT(CPUType, D3D11_Shader),
 };
 
 static const EnumEntry<uint32_t> FrameProcSymFlagNames[] = {
     CV_ENUM_CLASS_ENT(FrameProcedureOptions, HasAlloca),
     CV_ENUM_CLASS_ENT(FrameProcedureOptions, HasSetJmp),
     CV_ENUM_CLASS_ENT(FrameProcedureOptions, HasLongJmp),
     CV_ENUM_CLASS_ENT(FrameProcedureOptions, HasInlineAssembly),

llvm/lib/ObjectYAML/COFFYAML.cpp

 
 void
 ScalarEnumerationTraits<COFFYAML::WeakExternalCharacteristics>::enumeration(
     IO &IO, COFFYAML::WeakExternalCharacteristics &Value) {
   IO.enumCase(Value, "0", 0);
   ECase(IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY);
   ECase(IMAGE_WEAK_EXTERN_SEARCH_LIBRARY);
   ECase(IMAGE_WEAK_EXTERN_SEARCH_ALIAS);
+  ECase(IMAGE_WEAK_EXTERN_ANTI_DEPENDENCY);
 }
 
 void ScalarEnumerationTraits<COFFYAML::AuxSymbolType>::enumeration(
     IO &IO, COFFYAML::AuxSymbolType &Value) {
   ECase(IMAGE_AUX_SYMBOL_TYPE_TOKEN_DEF);
 }
 
 void ScalarEnumerationTraits<COFF::MachineTypes>::enumeration(