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//===-- MachineFunctionPass.h - Pass for MachineFunctions --------*-C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the MachineFunctionPass class. MachineFunctionPass's are
// just FunctionPass's, except they operate on machine code as part of a code
// generator. Because they operate on machine code, not the LLVM
// representation, MachineFunctionPass's are not allowed to modify the LLVM
// representation. Due to this limitation, the MachineFunctionPass class takes
// care of declaring that no LLVM passes are invalidated.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H
#define LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H
#include "llvm/Pass.h"
#include "llvm/CodeGen/MachineFunction.h"
namespace llvm {
struct MachineFunctionPass : public FunctionPass {
explicit MachineFunctionPass(intptr_t ID) : FunctionPass(ID) {}
protected:
/// runOnMachineFunction - This method must be overloaded to perform the
/// desired machine code transformation or analysis.
///
virtual bool runOnMachineFunction(MachineFunction &MF) = 0;
public:
// FIXME: This pass should declare that the pass does not invalidate any LLVM
// passes.
bool runOnFunction(Function &F) {
return runOnMachineFunction(MachineFunction::get(&F));
}
private:
virtual void virtfn(); // out of line virtual fn to give class a home.
};
} // End llvm namespace
#endif
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