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Add a CloneModule call that exposes the mapping of values from the old module

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to the new module.  Patch provided by Nick Lewycky!

llvm-svn: 28349
This commit is contained in:
Chris Lattner 2006-05-17 18:05:35 +00:00
parent 4252704561
commit 9a0d02f8f7
2 changed files with 9 additions and 4 deletions
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1
include/llvm/Transforms/Utils/Cloning.h
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@ -37,6 +37,7 @@ class CallGraph;
/// CloneModule - Return an exact copy of the specified module
///
Module *CloneModule(const Module *M);
Module *CloneModule(const Module *M, std::map<const Value*, Value*> &ValueMap);
/// ClonedCodeInfo - This struct can be used to capture information about code
/// being cloned, while it is being cloned.

12
lib/Transforms/Utils/CloneModule.cpp
View File

@ -26,6 +26,14 @@ using namespace llvm;
/// 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 @@ Module *llvm::CloneModule(const Module *M) {
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.