Add a CloneModule call that exposes the mapping of values from the old module
to the new module. Patch provided by Nick Lewycky!
llvm-svn: 28349
diff --git a/llvm/lib/Transforms/Utils/CloneModule.cpp b/llvm/lib/Transforms/Utils/CloneModule.cpp
index a872551..229debf 100644
--- a/llvm/lib/Transforms/Utils/CloneModule.cpp
+++ b/llvm/lib/Transforms/Utils/CloneModule.cpp
@@ -26,6 +26,14 @@
/// respectively) refer to the right globals.
///
Module *llvm::CloneModule(const Module *M) {
+ // Create the value map that maps things from the old module over to the new
+ // module.
+ std::map<const Value*, Value*> ValueMap;
+
+ return CloneModule(M, ValueMap);
+}
+
+Module *llvm::CloneModule(const Module *M, std::map<const Value*, Value*> &ValueMap) {
// First off, we need to create the new module...
Module *New = new Module(M->getModuleIdentifier());
New->setEndianness(M->getEndianness());
@@ -44,10 +52,6 @@
for (Module::lib_iterator I = M->lib_begin(), E = M->lib_end(); I != E; ++I)
New->addLibrary(*I);
- // Create the value map that maps things from the old module over to the new
- // module.
- std::map<const Value*, Value*> ValueMap;
-
// Loop over all of the global variables, making corresponding globals in the
// new module. Here we add them to the ValueMap and to the new Module. We
// don't worry about attributes or initializers, they will come later.