[clang] [clang-tools-extra] WIP: Extend SourceLocation to 64 bits. (PR #146314)

[Haojian Wu via cfe-commits]

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@@ -698,8 +703,7 @@ class DeclarationNameLoc {
 
   // The location (if any) of the operator keyword is stored elsewhere.
   struct CXXOpName {
-    SourceLocation::UIntTy BeginOpNameLoc;
-    SourceLocation::UIntTy EndOpNameLoc;
+    CXXOperatorSourceInfo* OInfo;
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hokein wrote:

I don't see the performance impact on this indirection -- this is for the C++ operation call, which is rare in practice (the perf here https://llvm-compile-time-tracker.com/compare.php?from=ff5a67315305f59f91041bad8b905e161b872442&to=38c519de69b127faa823078d3faff5670bc60209&stat=instructions:u) 

https://github.com/llvm/llvm-project/pull/146314