[clang] Add source file name for template instantiations in -ftime-trace (PR #98320)

[Ilya Biryukov via cfe-commits]

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@@ -3430,6 +3430,7 @@ Sema::InstantiateClass(SourceLocation PointOfInstantiation,
     llvm::raw_string_ostream OS(Name);
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ilya-biryukov wrote:

Should we do this for other things?
Most of the nodes are likely to have a source location they can be attributed to.

https://github.com/llvm/llvm-project/pull/98320