MachineFunctionPass.h revision 2a4a095e5788be7967c0ac311efc269bc87e80b3
12a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner//===-- MachineFunctionPass.h - Pass for MachineFunctions --------*-C++ -*-===// 22a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// 32a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// This file defines the MachineFunctionPass class. MachineFunctionPass's are 42a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// just FunctionPass's, except they operate on machine code as part of a code 52a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// generator. Because they operate on machine code, not the LLVM 62a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// representation, MachineFunctionPass's are not allowed to modify the LLVM 72a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// representation. Due to this limitation, the MachineFunctionPass class takes 82a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// care of declaring that no LLVM passes are invalidated. 92a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// 102a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner//===----------------------------------------------------------------------===// 112a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 122a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#ifndef LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H 132a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#define LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H 142a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 152a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#include "llvm/Pass.h" 162a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#include "llvm/CodeGen/MachineFunction.h" 172a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 182a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattnerstruct MachineFunctionPass : public FunctionPass { 192a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 202a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner /// runOnMachineFunction - This method must be overloaded to perform the 212a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner /// desired machine code transformation or analysis. 222a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner /// 232a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner virtual bool runOnMachineFunction(MachineFunction &MF) = 0; 242a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 252a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner // FIXME: This pass should declare that the pass does not invalidate any LLVM 262a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner // passes. 272a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 282a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner virtual bool runOnFunction(Function &F) { 292a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner return runOnMachineFunction(MachineFunction::get(&F)); 302a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner } 312a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner}; 322a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 332a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#endif 34