PHIEliminationUtils.h revision 261991
1219820Sjeff//=- PHIEliminationUtils.h - Helper functions for PHI elimination -*- C++ -*-=// 2219820Sjeff// 3219820Sjeff// The LLVM Compiler Infrastructure 4219820Sjeff// 5219820Sjeff// This file is distributed under the University of Illinois Open Source 6219820Sjeff// License. See LICENSE.TXT for details. 7219820Sjeff// 8219820Sjeff//===----------------------------------------------------------------------===// 9219820Sjeff 10219820Sjeff#ifndef LLVM_CODEGEN_PHIELIMINATIONUTILS_H 11219820Sjeff#define LLVM_CODEGEN_PHIELIMINATIONUTILS_H 12219820Sjeff 13219820Sjeff#include "llvm/CodeGen/MachineBasicBlock.h" 14219820Sjeff 15219820Sjeffnamespace llvm { 16219820Sjeff /// findPHICopyInsertPoint - Find a safe place in MBB to insert a copy from 17219820Sjeff /// SrcReg when following the CFG edge to SuccMBB. This needs to be after 18219820Sjeff /// any def of SrcReg, but before any subsequent point where control flow 19219820Sjeff /// might jump out of the basic block. 20219820Sjeff MachineBasicBlock::iterator 21219820Sjeff findPHICopyInsertPoint(MachineBasicBlock* MBB, MachineBasicBlock* SuccMBB, 22219820Sjeff unsigned SrcReg); 23219820Sjeff} 24219820Sjeff 25219820Sjeff#endif 26219820Sjeff