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1cf9c54e5c
This patch includes all missing functionality needed to provide first compilation of a simple program that just returns from a function. I've added a test case that checks for "ret" instruction printed in assembly output. Patch by Andrei Grischenko (andrei.l.grischenko@intel.com) Differential revision: https://reviews.llvm.org/D39688 llvm-svn: 320035
67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
//===-- Nios2InstPrinter.cpp - Convert Nios2 MCInst to assembly syntax-----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class prints an Nios2 MCInst to a .s file.
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//
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//===----------------------------------------------------------------------===//
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#include "Nios2InstPrinter.h"
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#include "Nios2InstrInfo.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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#define DEBUG_TYPE "asm-printer"
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#define PRINT_ALIAS_INSTR
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#include "Nios2GenAsmWriter.inc"
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void Nios2InstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
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OS << getRegisterName(RegNo);
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}
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void Nios2InstPrinter::printInst(const MCInst *MI, raw_ostream &O,
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StringRef Annot, const MCSubtargetInfo &STI) {
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// Try to print any aliases first.
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if (!printAliasInstr(MI, STI, O))
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printInstruction(MI, STI, O);
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printAnnotation(O, Annot);
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}
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void Nios2InstPrinter::printOperand(const MCInst *MI, int OpNo,
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const MCSubtargetInfo &STI,
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raw_ostream &O) {
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const MCOperand &Op = MI->getOperand(OpNo);
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if (Op.isReg()) {
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printRegName(O, Op.getReg());
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return;
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}
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if (Op.isImm()) {
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O << Op.getImm();
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return;
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}
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assert(Op.isExpr() && "unknown operand kind in printOperand");
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Op.getExpr()->print(O, &MAI, true);
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}
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void Nios2InstPrinter::printMemOperand(const MCInst *MI, int opNum,
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const MCSubtargetInfo &STI,
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raw_ostream &O, const char *Modifier) {
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// Load/Store memory operands -- imm($reg)
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printOperand(MI, opNum + 1, STI, O);
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O << "(";
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printOperand(MI, opNum, STI, O);
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O << ")";
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}
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