MachineFunctionPass.h revision 6fbcc26f1460eaee4e0eb8b426fc1ff0c7af11be
12a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner//===-- MachineFunctionPass.h - Pass for MachineFunctions --------*-C++ -*-===// 26fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 36fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// The LLVM Compiler Infrastructure 46fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 56fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// This file was developed by the LLVM research group and is distributed under 66fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// the University of Illinois Open Source License. See LICENSE.TXT for details. 76fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 86fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell//===----------------------------------------------------------------------===// 92a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// 102a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// This file defines the MachineFunctionPass class. MachineFunctionPass's are 112a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// just FunctionPass's, except they operate on machine code as part of a code 122a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// generator. Because they operate on machine code, not the LLVM 132a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// representation, MachineFunctionPass's are not allowed to modify the LLVM 142a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// representation. Due to this limitation, the MachineFunctionPass class takes 152a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// care of declaring that no LLVM passes are invalidated. 162a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner// 172a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner//===----------------------------------------------------------------------===// 182a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 192a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#ifndef LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H 202a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#define LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H 212a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 222a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#include "llvm/Pass.h" 232a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#include "llvm/CodeGen/MachineFunction.h" 242a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 252a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattnerstruct MachineFunctionPass : public FunctionPass { 262a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 272a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner /// runOnMachineFunction - This method must be overloaded to perform the 282a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner /// desired machine code transformation or analysis. 292a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner /// 302a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner virtual bool runOnMachineFunction(MachineFunction &MF) = 0; 312a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 322a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner // FIXME: This pass should declare that the pass does not invalidate any LLVM 332a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner // passes. 342a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 352a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner virtual bool runOnFunction(Function &F) { 362a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner return runOnMachineFunction(MachineFunction::get(&F)); 372a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner } 382a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner}; 392a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner 402a4a095e5788be7967c0ac311efc269bc87e80b3Chris Lattner#endif 41