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

[Kiran Chandramohan via cfe-commits]

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@@ -130,6 +133,20 @@ static bool saveMLIRTempFile(const CompilerInvocation &ci,
 // Custom BeginSourceFileAction
 //===----------------------------------------------------------------------===//
 
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+static llvm::cl::opt<llvm::PGOOptions::ColdFuncOpt> ClPGOColdFuncAttr(
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kiranchandramohan wrote:

Adding a proper frontend driver option to both frontends is the best way forward.

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