LLVM  6.0.0svn
PHIEliminationUtils.h
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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_LIB_CODEGEN_PHIELIMINATIONUTILS_H
11 #define LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H
12 
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.
21  findPHICopyInsertPoint(MachineBasicBlock* MBB, MachineBasicBlock* SuccMBB,
22  unsigned SrcReg);
23 }
24 
25 #endif
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
MachineBasicBlock::iterator findPHICopyInsertPoint(MachineBasicBlock *MBB, MachineBasicBlock *SuccMBB, unsigned SrcReg)
findPHICopyInsertPoint - Find a safe place in MBB to insert a copy from SrcReg when following the CFG...
MachineInstrBundleIterator< MachineInstr > iterator