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      1 //===- lib/MC/MCInst.cpp - MCInst implementation --------------------------===//
      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 #include "llvm/MC/MCInst.h"
     10 #include "llvm/Config/llvm-config.h"
     11 #include "llvm/MC/MCExpr.h"
     12 #include "llvm/MC/MCInstPrinter.h"
     13 #include "llvm/MC/MCRegisterInfo.h"
     14 #include "llvm/Support/Casting.h"
     15 #include "llvm/Support/Compiler.h"
     16 #include "llvm/Support/Debug.h"
     17 #include "llvm/Support/raw_ostream.h"
     18 
     19 using namespace llvm;
     20 
     21 void MCOperand::print(raw_ostream &OS, const MCRegisterInfo *RegInfo) const {
     22   OS << "<MCOperand ";
     23   if (!isValid())
     24     OS << "INVALID";
     25   else if (isReg()) {
     26     OS << "Reg:";
     27     if (RegInfo)
     28       OS << RegInfo->getName(getReg());
     29     else
     30       OS << getReg();
     31   } else if (isImm())
     32     OS << "Imm:" << getImm();
     33   else if (isSFPImm())
     34     OS << "SFPImm:" << bit_cast<float>(getSFPImm());
     35   else if (isDFPImm())
     36     OS << "DFPImm:" << bit_cast<double>(getDFPImm());
     37   else if (isExpr()) {
     38     OS << "Expr:(" << *getExpr() << ")";
     39   } else if (isInst()) {
     40     OS << "Inst:(";
     41     getInst()->print(OS, RegInfo);
     42     OS << ")";
     43   } else
     44     OS << "UNDEFINED";
     45   OS << ">";
     46 }
     47 
     48 bool MCOperand::evaluateAsConstantImm(int64_t &Imm) const {
     49   if (isImm()) {
     50     Imm = getImm();
     51     return true;
     52   }
     53   return false;
     54 }
     55 
     56 bool MCOperand::isBareSymbolRef() const {
     57   assert(isExpr() &&
     58          "isBareSymbolRef expects only expressions");
     59   const MCExpr *Expr = getExpr();
     60   MCExpr::ExprKind Kind = getExpr()->getKind();
     61   return Kind == MCExpr::SymbolRef &&
     62     cast<MCSymbolRefExpr>(Expr)->getKind() == MCSymbolRefExpr::VK_None;
     63 }
     64 
     65 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
     66 LLVM_DUMP_METHOD void MCOperand::dump() const {
     67   print(dbgs());
     68   dbgs() << "\n";
     69 }
     70 #endif
     71 
     72 void MCInst::print(raw_ostream &OS, const MCRegisterInfo *RegInfo) const {
     73   OS << "<MCInst " << getOpcode();
     74   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
     75     OS << " ";
     76     getOperand(i).print(OS, RegInfo);
     77   }
     78   OS << ">";
     79 }
     80 
     81 void MCInst::dump_pretty(raw_ostream &OS, const MCInstPrinter *Printer,
     82                          StringRef Separator,
     83                          const MCRegisterInfo *RegInfo) const {
     84   StringRef InstName = Printer ? Printer->getOpcodeName(getOpcode()) : "";
     85   dump_pretty(OS, InstName, Separator, RegInfo);
     86 }
     87 
     88 void MCInst::dump_pretty(raw_ostream &OS, StringRef Name, StringRef Separator,
     89                          const MCRegisterInfo *RegInfo) const {
     90   OS << "<MCInst #" << getOpcode();
     91 
     92   // Show the instruction opcode name if we have it.
     93   if (!Name.empty())
     94     OS << ' ' << Name;
     95 
     96   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
     97     OS << Separator;
     98     getOperand(i).print(OS, RegInfo);
     99   }
    100   OS << ">";
    101 }
    102 
    103 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
    104 LLVM_DUMP_METHOD void MCInst::dump() const {
    105   print(dbgs());
    106   dbgs() << "\n";
    107 }
    108 #endif
    109