llvm/lib/MC/MCInst.cpp

   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     if (const auto *Inst = getInst())
  42       Inst->print(OS, RegInfo);
  43     else
  44       OS << "NULL";
  45     OS << ")";
  46   } else
  47     OS << "UNDEFINED";
  48   OS << ">";
  49 }
  50
  51 bool MCOperand::evaluateAsConstantImm(int64_t &Imm) const {
  52   if (isImm()) {
  53     Imm = getImm();
  54     return true;
  55   }
  56   return false;
  57 }
  58
  59 bool MCOperand::isBareSymbolRef() const {
  60   assert(isExpr() &&
  61          "isBareSymbolRef expects only expressions");
  62   const MCExpr *Expr = getExpr();
  63   MCExpr::ExprKind Kind = getExpr()->getKind();
  64   return Kind == MCExpr::SymbolRef &&
  65     cast<MCSymbolRefExpr>(Expr)->getKind() == MCSymbolRefExpr::VK_None;
  66 }
  67
  68 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
  69 LLVM_DUMP_METHOD void MCOperand::dump() const {
  70   print(dbgs());
  71   dbgs() << "\n";
  72 }
  73 #endif
  74
  75 void MCInst::print(raw_ostream &OS, const MCRegisterInfo *RegInfo) const {
  76   OS << "<MCInst " << getOpcode();
  77   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
  78     OS << " ";
  79     getOperand(i).print(OS, RegInfo);
  80   }
  81   OS << ">";
  82 }
  83
  84 void MCInst::dump_pretty(raw_ostream &OS, const MCInstPrinter *Printer,
  85                          StringRef Separator,
  86                          const MCRegisterInfo *RegInfo) const {
  87   StringRef InstName = Printer ? Printer->getOpcodeName(getOpcode()) : "";
  88   dump_pretty(OS, InstName, Separator, RegInfo);
  89 }
  90
  91 void MCInst::dump_pretty(raw_ostream &OS, StringRef Name, StringRef Separator,
  92                          const MCRegisterInfo *RegInfo) const {
  93   OS << "<MCInst #" << getOpcode();
  94
  95   // Show the instruction opcode name if we have it.
  96   if (!Name.empty())
  97     OS << ' ' << Name;
  98
  99   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
 100     OS << Separator;
 101     getOperand(i).print(OS, RegInfo);
 102   }
 103   OS << ">";
 104 }
 105
 106 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 107 LLVM_DUMP_METHOD void MCInst::dump() const {
 108   print(dbgs());
 109   dbgs() << "\n";
 110 }
 111 #endif