[clang] [flang] Add IR Profile-Guided Optimization (IR PGO) support to the Flang compiler (PR #136098)

[via cfe-commits]

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@@ -892,6 +909,20 @@ static void generateMachineCodeOrAssemblyImpl(clang::DiagnosticsEngine &diags,
   delete tlii;
 }
 
+
+// Default filename used for profile generation.
+namespace llvm {
+  extern llvm::cl::opt<bool> DebugInfoCorrelate;
+  extern llvm::cl::opt<InstrProfCorrelator::ProfCorrelatorKind> ProfileCorrelate;
+
+
+std::string getDefaultProfileGenName() {
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fanju110 wrote:

Thank you for your review.


The `getDefaultProfileGenName` function in the original clang is defined in an anonymous namespace and cannot be directly reused in flang. If I reuse this function, I may need to change the source code of clang, is this appropriate?

https://github.com/llvm/llvm-project/pull/136098