Differential D29933 Diff 119619 llvm/trunk/lib/Target/RISCV/RISCVMCInstLower.cpp

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		1		//===-- RISCVMCInstLower.cpp - Convert RISCV MachineInstr to an MCInst ------=//
		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		// This file contains code to lower RISCV MachineInstrs to their corresponding
		11		// MCInst records.
		12		//
		13		//===----------------------------------------------------------------------===//
		14
		15		#include "RISCV.h"
		16		#include "llvm/CodeGen/MachineBasicBlock.h"
		17		#include "llvm/CodeGen/MachineInstr.h"
		18		#include "llvm/MC/MCAsmInfo.h"
		19		#include "llvm/MC/MCContext.h"
		20		#include "llvm/MC/MCExpr.h"
		21		#include "llvm/MC/MCInst.h"
		22		#include "llvm/Support/ErrorHandling.h"
		23		#include "llvm/Support/raw_ostream.h"
		24
		25		using namespace llvm;
		26
		27		void llvm::LowerRISCVMachineInstrToMCInst(const MachineInstr *MI,
		28		MCInst &OutMI) {
		29		OutMI.setOpcode(MI->getOpcode());
		30
		31		for (const MachineOperand &MO : MI->operands()) {
		32		MCOperand MCOp;
		33		switch (MO.getType()) {
		34		default:
		35		report_fatal_error(
		36		"LowerRISCVMachineInstrToMCInst: unknown operand type");
		37		case MachineOperand::MO_Register:
		38		// Ignore all implicit register operands.
		39		if (MO.isImplicit())
		40		continue;
		41		MCOp = MCOperand::createReg(MO.getReg());
		42		break;
		43		case MachineOperand::MO_Immediate:
		44		MCOp = MCOperand::createImm(MO.getImm());
		45		break;
		46		}
		47
		48		OutMI.addOperand(MCOp);
		49		}
		50		}