| Cameron Zwarich | da592a9e | 2010-12-05 19:51:05 +0000 | [diff] [blame] | 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 |