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//===- LoongArchInstPrinter.cpp - Convert LoongArch MCInst to asm syntax --===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This class prints an LoongArch MCInst to a .s file.
//
//===----------------------------------------------------------------------===//
#include "LoongArchInstPrinter.h"
#include "LoongArchBaseInfo.h"
#include "LoongArchMCTargetDesc.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
#define DEBUG_TYPE "loongarch-asm-printer"
// Include the auto-generated portion of the assembly writer.
#define PRINT_ALIAS_INSTR
#include "LoongArchGenAsmWriter.inc"
static cl::opt<bool>
NumericReg("loongarch-numeric-reg",
cl::desc("Print numeric register names rather than the ABI "
"names (such as $r0 instead of $zero)"),
cl::init(false), cl::Hidden);
// The command-line flag above is used by llvm-mc and llc. It can be used by
// `llvm-objdump`, but we override the value here to handle options passed to
// `llvm-objdump` with `-M` (which matches GNU objdump). There did not seem to
// be an easier way to allow these options in all these tools, without doing it
// this way.
bool LoongArchInstPrinter::applyTargetSpecificCLOption(StringRef Opt) {
if (Opt == "numeric") {
NumericReg = true;
return true;
}
return false;
}
void LoongArchInstPrinter::printInst(const MCInst *MI, uint64_t Address,
StringRef Annot,
const MCSubtargetInfo &STI,
raw_ostream &O) {
if (!printAliasInstr(MI, Address, STI, O))
printInstruction(MI, Address, STI, O);
printAnnotation(O, Annot);
}
void LoongArchInstPrinter::printRegName(raw_ostream &O, MCRegister Reg) const {
O << '$' << getRegisterName(Reg);
}
void LoongArchInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNo);
if (MO.isReg()) {
printRegName(O, MO.getReg());
return;
}
if (MO.isImm()) {
O << MO.getImm();
return;
}
assert(MO.isExpr() && "Unknown operand kind in printOperand");
MO.getExpr()->print(O, &MAI);
}
void LoongArchInstPrinter::printAtomicMemOp(const MCInst *MI, unsigned OpNo,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNo);
assert(MO.isReg() && "printAtomicMemOp can only print register operands");
printRegName(O, MO.getReg());
}
const char *LoongArchInstPrinter::getRegisterName(MCRegister Reg) {
// Default print reg alias name
return getRegisterName(Reg, NumericReg ? LoongArch::NoRegAltName
: LoongArch::RegAliasName);
}
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