Just enable the extern template declarations and definitions on all platforms

Author: fsfod

llvm/include/llvm/Analysis/LazyCallGraph.h

@@ -1309,10 +1309,8 @@ class LazyCallGraphDOTPrinterPass
   static bool isRequired() { return true; }
 };
 
-#ifdef _WIN32
 extern template struct LLVM_TEMPLATE_ABI
     Any::TypeId<const LazyCallGraph::SCC *>;
-#endif
 } // end namespace llvm
 
 #endif // LLVM_ANALYSIS_LAZYCALLGRAPH_H

llvm/include/llvm/IR/PassInstrumentation.h

@@ -66,11 +66,9 @@ class Module;
 class Loop;
 class Function;
 
-#ifdef _WIN32
 extern template struct LLVM_TEMPLATE_ABI Any::TypeId<const Module *>;
 extern template struct LLVM_TEMPLATE_ABI Any::TypeId<const Function *>;
 extern template struct LLVM_TEMPLATE_ABI Any::TypeId<const Loop *>;
-#endif
 
 /// This class manages callbacks registration, as well as provides a way for
 /// PassInstrumentation to pass control to the registered callbacks.

llvm/lib/Analysis/LazyCallGraph.cpp

@@ -37,9 +37,7 @@ using namespace llvm;
 
 #define DEBUG_TYPE "lcg"
 
-#ifdef _WIN32
 template struct LLVM_EXPORT_TEMPLATE Any::TypeId<const LazyCallGraph::SCC *>;
-#endif
 
 void LazyCallGraph::EdgeSequence::insertEdgeInternal(Node &TargetN,
                                                      Edge::Kind EK) {

llvm/lib/IR/PassInstrumentation.cpp

@@ -17,11 +17,9 @@
 
 namespace llvm {
 
-#ifdef _WIN32
 template struct LLVM_EXPORT_TEMPLATE Any::TypeId<const Module *>;
 template struct LLVM_EXPORT_TEMPLATE Any::TypeId<const Function *>;
 template struct LLVM_EXPORT_TEMPLATE Any::TypeId<const Loop *>;
-#endif
 
 void PassInstrumentationCallbacks::addClassToPassName(StringRef ClassName,
                                                       StringRef PassName) {