| //===-- 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 { |
| |
| MachineFunctionPass(intptr_t ID) : FunctionPass(ID) {} |
| |
| /// runOnMachineFunction - This method must be overloaded to perform the |
| /// desired machine code transformation or analysis. |
| /// |
| virtual bool runOnMachineFunction(MachineFunction &MF) = 0; |
| |
| // FIXME: This pass should declare that the pass does not invalidate any LLVM |
| // passes. |
| virtual bool runOnFunction(Function &F) { |
| return runOnMachineFunction(MachineFunction::get(&F)); |
| } |
| |
| virtual void virtfn(); // out of line virtual fn to give class a home. |
| }; |
| |
| } // End llvm namespace |
| |
| #endif |