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//===- llvm/Transforms/LowerAllocations.h - Remove Malloc & Free -*- C++ -*--=//
//
// This file defines the interface to a pass that lowers malloc and free
// instructions to calls to %malloc & %free functions. This transformation is
// a target dependant tranformation because we depend on the size of data types
// and alignment constraints.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_LOWERALLOCATIONS_H
#define LLVM_TRANSFORMS_LOWERALLOCATIONS_H
#include "llvm/Pass.h"
class TargetData;
class LowerAllocations : public Pass {
Method *MallocMeth; // Methods in the module we are processing
Method *FreeMeth; // Initialized by doPassInitializationVirt
const TargetData &DataLayout;
public:
inline LowerAllocations(const TargetData &TD) : DataLayout(TD) {
MallocMeth = FreeMeth = 0;
}
// doPassInitialization - For the lower allocations pass, this ensures that a
// module contains a declaration for a malloc and a free function.
//
// This function is always successful.
//
bool doPassInitialization(Module *M);
// doPerMethodWork - This method does the actual work of converting
// instructions over, assuming that the pass has already been initialized.
//
bool doPerMethodWork(Method *M);
};
#endif
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