1 //=- PHIEliminationUtils.h - Helper functions for PHI elimination -*- C++ -*-=// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H 11 #define LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H 12 13 #include "llvm/CodeGen/MachineBasicBlock.h" 14 15 namespace llvm { 16 /// findPHICopyInsertPoint - Find a safe place in MBB to insert a copy from 17 /// SrcReg when following the CFG edge to SuccMBB. This needs to be after 18 /// any def of SrcReg, but before any subsequent point where control flow 19 /// might jump out of the basic block. 20 MachineBasicBlock::iterator 21 findPHICopyInsertPoint(MachineBasicBlock* MBB, MachineBasicBlock* SuccMBB, 22 unsigned SrcReg); 23 } 24 25 #endif 26