lib/CodeGen/PHIEliminationUtils.h

   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_CODEGEN_PHIELIMINATIONUTILS_H
  11 #define LLVM_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