1*0b57cec5SDimitry Andric //=- PHIEliminationUtils.h - Helper functions for PHI elimination -*- C++ -*-=// 2*0b57cec5SDimitry Andric // 3*0b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*0b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0b57cec5SDimitry Andric // 7*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 8*0b57cec5SDimitry Andric 9*0b57cec5SDimitry Andric #ifndef LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H 10*0b57cec5SDimitry Andric #define LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H 11*0b57cec5SDimitry Andric 12*0b57cec5SDimitry Andric #include "llvm/CodeGen/MachineBasicBlock.h" 13*0b57cec5SDimitry Andric 14*0b57cec5SDimitry Andric namespace llvm { 15*0b57cec5SDimitry Andric /// findPHICopyInsertPoint - Find a safe place in MBB to insert a copy from 16*0b57cec5SDimitry Andric /// SrcReg when following the CFG edge to SuccMBB. This needs to be after 17*0b57cec5SDimitry Andric /// any def of SrcReg, but before any subsequent point where control flow 18*0b57cec5SDimitry Andric /// might jump out of the basic block. 19*0b57cec5SDimitry Andric MachineBasicBlock::iterator 20*0b57cec5SDimitry Andric findPHICopyInsertPoint(MachineBasicBlock* MBB, MachineBasicBlock* SuccMBB, 21*0b57cec5SDimitry Andric unsigned SrcReg); 22*0b57cec5SDimitry Andric } 23*0b57cec5SDimitry Andric 24*0b57cec5SDimitry Andric #endif 25