[all-commits] [llvm/llvm-project] 1be64e: [clang][Sema] Add instant event when template inst...

[ivanaivanovska via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1be64e5413cbe9cfa89539f70ad02ee1d8945ebe
      https://github.com/llvm/llvm-project/commit/1be64e5413cbe9cfa89539f70ad02ee1d8945ebe
  Author: ivanaivanovska <iivanovska at google.com>
  Date:   2024-10-09 (Wed, 09 Oct 2024)

  Changed paths:
    M clang/lib/Sema/SemaExpr.cpp
    M clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
    M clang/unittests/Support/TimeProfilerTest.cpp

  Log Message:
  -----------
  [clang][Sema] Add instant event when template instantiation is deferred. (#111524)

While profiling a clang invocation using `-ftime-trace`, now we add
instant events when template instantiation is deferred.
These events include the fully qualified name of the function template
being deferred and therefore could be very verbose. This is therefore
only added in verbose mode (when `TimeTraceVerbose` is enabled).

The point of time when a particular instantiation is deferred can be
used to identify the parent TimeTrace scope (usually another function
instantiation), which is responsible for deferring this instantiation.
This relationship can be used to attribute the cost of a deferred
template instantiation to the function deferring this particular
instantiation.



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