[rustc.git] / src / llvm / lib / CodeGen / PHIEliminationUtils.h

//=- 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
Commit	Line	Data
1a4d82fc	1	//=- PHIEliminationUtils.h - Helper functions for PHI elimination -- C++ --=//
223e47cc LB	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
1a4d82fc JJ	10	#ifndef LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H
1a4d82fc JJ	11	#define LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H
223e47cc LB	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