| //=- PHIEliminationUtils.h - Helper functions for PHI elimination -*- C++ -*-=// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H |
| #define LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H |
| |
| #include "llvm/CodeGen/MachineBasicBlock.h" |
| |
| namespace llvm { |
| /// findPHICopyInsertPoint - Find a safe place in MBB to insert a copy from |
| /// SrcReg when following the CFG edge to SuccMBB. This needs to be after |
| /// any def of SrcReg, but before any subsequent point where control flow |
| /// might jump out of the basic block. |
| MachineBasicBlock::iterator |
| findPHICopyInsertPoint(MachineBasicBlock* MBB, MachineBasicBlock* SuccMBB, |
| unsigned SrcReg); |
| } |
| |
| #endif |