LLVM  9.0.0svn
PHIEliminationUtils.h
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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 
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.
20  findPHICopyInsertPoint(MachineBasicBlock* MBB, MachineBasicBlock* SuccMBB,
21  unsigned SrcReg);
22 }
23 
24 #endif
This class represents lattice values for constants.
Definition: AllocatorList.h:23
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