[nfc][ctx_prof] Remove the need for PassBuilder to know about UseCtxProfile (#104492)

Author: mtrofin

llvm/include/llvm/Analysis/CtxProfAnalysis.h

@@ -79,7 +79,7 @@ class CtxProfAnalysis : public AnalysisInfoMixin<CtxProfAnalysis> {
 
 public:
   static AnalysisKey Key;
-  explicit CtxProfAnalysis(StringRef Profile) : Profile(Profile) {};
+  explicit CtxProfAnalysis(StringRef Profile = "");
 
   using Result = PGOContextualProfile;
 

llvm/lib/Analysis/CtxProfAnalysis.cpp

@@ -96,6 +96,9 @@ GlobalValue::GUID AssignGUIDPass::getGUID(const Function &F) {
 }
 AnalysisKey CtxProfAnalysis::Key;
 
+CtxProfAnalysis::CtxProfAnalysis(StringRef Profile)
+    : Profile(Profile.empty() ? UseCtxProfile : Profile) {}
+
 PGOContextualProfile CtxProfAnalysis::run(Module &M,
                                           ModuleAnalysisManager &MAM) {
   ErrorOr<std::unique_ptr<MemoryBuffer>> MB = MemoryBuffer::getFile(Profile);

llvm/lib/Passes/PassBuilder.cpp

@@ -334,8 +334,6 @@ cl::opt<bool> PrintPipelinePasses(
              "(best-effort only)."));
 } // namespace llvm
 
-extern cl::opt<std::string> UseCtxProfile;
-
 AnalysisKey NoOpModuleAnalysis::Key;
 AnalysisKey NoOpCGSCCAnalysis::Key;
 AnalysisKey NoOpFunctionAnalysis::Key;

llvm/lib/Passes/PassRegistry.def

@@ -20,7 +20,7 @@
 #endif
 MODULE_ANALYSIS("callgraph", CallGraphAnalysis())
 MODULE_ANALYSIS("collector-metadata", CollectorMetadataAnalysis())
-MODULE_ANALYSIS("ctx-prof-analysis", CtxProfAnalysis(UseCtxProfile))
+MODULE_ANALYSIS("ctx-prof-analysis", CtxProfAnalysis())
 MODULE_ANALYSIS("dxil-metadata", DXILMetadataAnalysis())
 MODULE_ANALYSIS("dxil-resource", DXILResourceAnalysis())
 MODULE_ANALYSIS("inline-advisor", InlineAdvisorAnalysis())