[clang] [llvm] [PGO]Add `-fdiagnostics-show-profile-count` option to show real loop count from instr-profile (PR #75021)

[Elvis Wang via llvm-commits]

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@@ -2091,6 +2091,12 @@ bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
   bool UsingProfile =
       UsingSampleProfile || !Opts.ProfileInstrumentUsePath.empty();
 
+  if (Args.hasArg(options::OPT_fdiagnostics_show_profile_count) &&
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ElvisWang123 wrote:

This option `options::OPT_fdiagnostics_show_profile_count` also appears in the `clang/lib/Driver/Toochains/clang.cpp` to enable the profile metadata appending to IR.

https://github.com/llvm/llvm-project/pull/75021