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//===-- PIC16Cloner.h - PIC16 LLVM Cloner for shared functions --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains declaration of a cloner class clone all functions that
// are shared between the main line code (ML) and interrupt line code (IL).
//
//===----------------------------------------------------------------------===//
#ifndef PIC16CLONER_H
#define PIC16CLONER_H
#include "llvm/ADT/ValueMap.h"
using namespace llvm;
using std::vector;
using std::string;
using std::map;
namespace llvm {
// forward classes.
class Value;
class Function;
class Module;
class ModulePass;
class CallGraph;
class CallGraphNode;
class AnalysisUsage;
class PIC16Cloner : public ModulePass {
public:
static char ID; // Class identification
PIC16Cloner() : ModulePass(&ID) {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<CallGraph>();
}
virtual bool runOnModule(Module &M);
private: // Functions
// Mark reachable functions for the MainLine or InterruptLine.
void markCallGraph(CallGraphNode *CGN, string StringMark);
// Clone auto variables of function specified.
void CloneAutos(Function *F);
// Clone the body of a function.
Function *cloneFunction(Function *F);
// Clone all shared functions.
void cloneSharedFunctions(CallGraphNode *isrCGN);
// Remap all call sites to the shared function.
void remapAllSites(Function *Caller, Function *OrgF, Function *Clone);
// Error reporting for PIC16Pass
void reportError(string ErrorString, vector<string> &Values);
void reportError(string ErrorString);
private: //data
// Records if the interrupt function has already been found.
// If more than one interrupt function is found then an error
// should be thrown.
bool foundISR;
// This ValueMap maps the auto variables of the original functions with
// the corresponding cloned auto variable of the cloned function.
// This value map is passed during the function cloning so that all the
// uses of auto variables be updated properly.
ValueMap<const Value*, Value*> VMap;
// Map of a already cloned functions.
map<Function *, Function *> ClonedFunctionMap;
typedef map<Function *, Function *>::iterator cloned_map_iterator;
};
} // End of anonymous namespace
#endif
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