llvm/lib/CodeGen/PHIEliminationUtils.h

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