1*09467b48Spatrick //=- PHIEliminationUtils.h - Helper functions for PHI elimination -*- C++ -*-=// 2*09467b48Spatrick // 3*09467b48Spatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*09467b48Spatrick // See https://llvm.org/LICENSE.txt for license information. 5*09467b48Spatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*09467b48Spatrick // 7*09467b48Spatrick //===----------------------------------------------------------------------===// 8*09467b48Spatrick 9*09467b48Spatrick #ifndef LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H 10*09467b48Spatrick #define LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H 11*09467b48Spatrick 12*09467b48Spatrick #include "llvm/CodeGen/MachineBasicBlock.h" 13*09467b48Spatrick 14*09467b48Spatrick namespace llvm { 15*09467b48Spatrick /// findPHICopyInsertPoint - Find a safe place in MBB to insert a copy from 16*09467b48Spatrick /// SrcReg when following the CFG edge to SuccMBB. This needs to be after 17*09467b48Spatrick /// any def of SrcReg, but before any subsequent point where control flow 18*09467b48Spatrick /// might jump out of the basic block. 19*09467b48Spatrick MachineBasicBlock::iterator 20*09467b48Spatrick findPHICopyInsertPoint(MachineBasicBlock* MBB, MachineBasicBlock* SuccMBB, 21*09467b48Spatrick unsigned SrcReg); 22*09467b48Spatrick } 23*09467b48Spatrick 24*09467b48Spatrick #endif 25