-// $Id$
-//***************************************************************************
-// File:
-// MachineInstr.cpp
+//===-- MachineInstr.cpp --------------------------------------------------===//
//
-// Purpose:
-//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
-// Strategy:
-//
-// History:
-// 7/2/01 - Vikram Adve - Created
-//**************************************************************************/
+//===----------------------------------------------------------------------===//
+//
+// Methods common to all machine instructions.
+//
+// FIXME: Now that MachineInstrs have parent pointers, they should always
+// print themselves using their MachineFunction's TargetMachine.
+//
+//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/Value.h"
-#include <iostream>
-using std::cerr;
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/MRegisterInfo.h"
+#include "Support/LeakDetector.h"
+using namespace llvm;
+// Global variable holding an array of descriptors for machine instructions.
+// The actual object needs to be created separately for each target machine.
+// This variable is initialized and reset by class TargetInstrInfo.
+//
+// FIXME: This should be a property of the target so that more than one target
+// at a time can be active...
+//
+namespace llvm {
+ extern const TargetInstrDescriptor *TargetInstrDescriptors;
+}
-//************************ Class Implementations **************************/
+// Constructor for instructions with variable #operands
+MachineInstr::MachineInstr(short opcode, unsigned numOperands)
+ : Opcode(opcode),
+ numImplicitRefs(0),
+ operands(numOperands, MachineOperand()),
+ parent(0) {
+ // Make sure that we get added to a machine basicblock
+ LeakDetector::addGarbageObject(this);
+}
-// Constructor for instructions with fixed #operands (nearly all)
-MachineInstr::MachineInstr(MachineOpCode _opCode,
- OpCodeMask _opCodeMask)
- : opCode(_opCode),
- opCodeMask(_opCodeMask),
- operands(TargetInstrDescriptors[_opCode].numOperands)
-{
- assert(TargetInstrDescriptors[_opCode].numOperands >= 0);
+/// MachineInstr ctor - This constructor only does a _reserve_ of the operands,
+/// not a resize for them. It is expected that if you use this that you call
+/// add* methods below to fill up the operands, instead of the Set methods.
+/// Eventually, the "resizing" ctors will be phased out.
+///
+MachineInstr::MachineInstr(short opcode, unsigned numOperands, bool XX, bool YY)
+ : Opcode(opcode), numImplicitRefs(0), parent(0) {
+ operands.reserve(numOperands);
+ // Make sure that we get added to a machine basicblock
+ LeakDetector::addGarbageObject(this);
}
-// Constructor for instructions with variable #operands
-MachineInstr::MachineInstr(MachineOpCode _opCode,
- unsigned numOperands,
- OpCodeMask _opCodeMask)
- : opCode(_opCode),
- opCodeMask(_opCodeMask),
- operands(numOperands)
-{
+/// MachineInstr ctor - Work exactly the same as the ctor above, except that the
+/// MachineInstr is created and added to the end of the specified basic block.
+///
+MachineInstr::MachineInstr(MachineBasicBlock *MBB, short opcode,
+ unsigned numOperands)
+ : Opcode(opcode), numImplicitRefs(0), parent(0) {
+ assert(MBB && "Cannot use inserting ctor with null basic block!");
+ operands.reserve(numOperands);
+ // Make sure that we get added to a machine basicblock
+ LeakDetector::addGarbageObject(this);
+ MBB->push_back(this); // Add instruction to end of basic block!
}
-void
-MachineInstr::SetMachineOperandVal(unsigned int i,
- MachineOperand::MachineOperandType operandType,
- Value* _val, bool isdef=false)
+MachineInstr::~MachineInstr()
{
- assert(i < operands.size());
- operands[i].Initialize(operandType, _val);
- operands[i].isDef = isdef ||
- TargetInstrDescriptors[opCode].resultPos == (int) i;
+ LeakDetector::removeGarbageObject(this);
+}
+
+/// OperandComplete - Return true if it's illegal to add a new operand
+///
+bool MachineInstr::OperandsComplete() const {
+ int NumOperands = TargetInstrDescriptors[Opcode].numOperands;
+ if (NumOperands >= 0 && getNumOperands() >= (unsigned)NumOperands)
+ return true; // Broken: we have all the operands of this instruction!
+ return false;
+}
+
+/// replace - Support for replacing opcode and operands of a MachineInstr in
+/// place. This only resets the size of the operand vector and initializes it.
+/// The new operands must be set explicitly later.
+///
+void MachineInstr::replace(short opcode, unsigned numOperands) {
+ assert(getNumImplicitRefs() == 0 &&
+ "This is probably broken because implicit refs are going to be lost.");
+ Opcode = opcode;
+ operands.clear();
+ operands.resize(numOperands, MachineOperand());
+}
+
+void MachineInstr::SetMachineOperandVal(unsigned i,
+ MachineOperand::MachineOperandType opTy,
+ Value* V) {
+ assert(i < operands.size()); // may be explicit or implicit op
+ operands[i].opType = opTy;
+ operands[i].value = V;
+ operands[i].regNum = -1;
}
void
-MachineInstr::SetMachineOperandConst(unsigned int i,
- MachineOperand::MachineOperandType operandType,
- int64_t intValue)
-{
- assert(i < operands.size());
- assert(TargetInstrDescriptors[opCode].resultPos != (int) i &&
+MachineInstr::SetMachineOperandConst(unsigned i,
+ MachineOperand::MachineOperandType opTy,
+ int intValue) {
+ assert(i < getNumOperands()); // must be explicit op
+ assert(TargetInstrDescriptors[Opcode].resultPos != (int) i &&
"immed. constant cannot be defined");
- operands[i].InitializeConst(operandType, intValue);
- operands[i].isDef = false;
+
+ operands[i].opType = opTy;
+ operands[i].value = NULL;
+ operands[i].immedVal = intValue;
+ operands[i].regNum = -1;
+ operands[i].flags = 0;
}
-void
-MachineInstr::SetMachineOperandReg(unsigned int i,
- int regNum,
- bool isdef=false,
- bool isCCReg=false)
-{
- assert(i < operands.size());
- operands[i].InitializeReg(regNum, isCCReg);
- operands[i].isDef = isdef ||
- TargetInstrDescriptors[opCode].resultPos == (int) i;
+void MachineInstr::SetMachineOperandReg(unsigned i, int regNum) {
+ assert(i < getNumOperands()); // must be explicit op
+
+ operands[i].opType = MachineOperand::MO_MachineRegister;
+ operands[i].value = NULL;
+ operands[i].regNum = regNum;
}
-void
-MachineInstr::dump(unsigned int indent) const
+// Used only by the SPARC back-end.
+void MachineInstr::SetRegForOperand(unsigned i, int regNum) {
+ assert(i < getNumOperands()); // must be explicit op
+ operands[i].setRegForValue(regNum);
+}
+
+// Used only by the SPARC back-end.
+void MachineInstr::SetRegForImplicitRef(unsigned i, int regNum) {
+ getImplicitOp(i).setRegForValue(regNum);
+}
+
+/// substituteValue - Substitute all occurrences of Value* oldVal with newVal
+/// in all operands and all implicit refs. If defsOnly == true, substitute defs
+/// only.
+///
+/// FIXME: Fold this into its single caller, at SparcInstrSelection.cpp:2865,
+/// or make it a static function in that file.
+///
+unsigned
+MachineInstr::substituteValue(const Value* oldVal, Value* newVal,
+ bool defsOnly, bool notDefsAndUses,
+ bool& someArgsWereIgnored)
{
- for (unsigned i=0; i < indent; i++)
- cerr << " ";
+ assert((!defsOnly || !notDefsAndUses) &&
+ "notDefsAndUses is irrelevant if defsOnly == true.");
- cerr << *this;
+ unsigned numSubst = 0;
+
+ // Substitute operands
+ for (MachineInstr::val_op_iterator O = begin(), E = end(); O != E; ++O)
+ if (*O == oldVal)
+ if (!defsOnly ||
+ notDefsAndUses && (O.isDef() && !O.isUse()) ||
+ !notDefsAndUses && O.isDef())
+ {
+ O.getMachineOperand().value = newVal;
+ ++numSubst;
+ }
+ else
+ someArgsWereIgnored = true;
+
+ // Substitute implicit refs
+ for (unsigned i=0, N=getNumImplicitRefs(); i < N; ++i)
+ if (getImplicitRef(i) == oldVal)
+ if (!defsOnly ||
+ notDefsAndUses && (getImplicitOp(i).isDef() && !getImplicitOp(i).isUse()) ||
+ !notDefsAndUses && getImplicitOp(i).isDef())
+ {
+ getImplicitOp(i).value = newVal;
+ ++numSubst;
+ }
+ else
+ someArgsWereIgnored = true;
+
+ return numSubst;
}
-std::ostream &operator<<(std::ostream& os, const MachineInstr& minstr)
-{
- os << TargetInstrDescriptors[minstr.opCode].opCodeString;
+void MachineInstr::dump() const {
+ std::cerr << " " << *this;
+}
+
+static inline std::ostream& OutputValue(std::ostream &os, const Value* val) {
+ os << "(val ";
+ os << (void*) val; // print address always
+ if (val && val->hasName())
+ os << " " << val->getName(); // print name also, if available
+ os << ")";
+ return os;
+}
+
+static inline void OutputReg(std::ostream &os, unsigned RegNo,
+ const MRegisterInfo *MRI = 0) {
+ if (!RegNo || MRegisterInfo::isPhysicalRegister(RegNo)) {
+ if (MRI)
+ os << "%" << MRI->get(RegNo).Name;
+ else
+ os << "%mreg(" << RegNo << ")";
+ } else
+ os << "%reg" << RegNo;
+}
+
+static void print(const MachineOperand &MO, std::ostream &OS,
+ const TargetMachine &TM) {
+ const MRegisterInfo *MRI = TM.getRegisterInfo();
+ bool CloseParen = true;
+ if (MO.isHiBits32())
+ OS << "%lm(";
+ else if (MO.isLoBits32())
+ OS << "%lo(";
+ else if (MO.isHiBits64())
+ OS << "%hh(";
+ else if (MO.isLoBits64())
+ OS << "%hm(";
+ else
+ CloseParen = false;
- for (unsigned i=0, N=minstr.getNumOperands(); i < N; i++) {
- os << "\t" << minstr.getOperand(i);
- if( minstr.getOperand(i).opIsDef() )
- os << "*";
+ switch (MO.getType()) {
+ case MachineOperand::MO_VirtualRegister:
+ if (MO.getVRegValue()) {
+ OS << "%reg";
+ OutputValue(OS, MO.getVRegValue());
+ if (MO.hasAllocatedReg())
+ OS << "==";
+ }
+ if (MO.hasAllocatedReg())
+ OutputReg(OS, MO.getReg(), MRI);
+ break;
+ case MachineOperand::MO_CCRegister:
+ OS << "%ccreg";
+ OutputValue(OS, MO.getVRegValue());
+ if (MO.hasAllocatedReg()) {
+ OS << "==";
+ OutputReg(OS, MO.getReg(), MRI);
+ }
+ break;
+ case MachineOperand::MO_MachineRegister:
+ OutputReg(OS, MO.getMachineRegNum(), MRI);
+ break;
+ case MachineOperand::MO_SignExtendedImmed:
+ OS << (long)MO.getImmedValue();
+ break;
+ case MachineOperand::MO_UnextendedImmed:
+ OS << (long)MO.getImmedValue();
+ break;
+ case MachineOperand::MO_PCRelativeDisp: {
+ const Value* opVal = MO.getVRegValue();
+ bool isLabel = isa<Function>(opVal) || isa<BasicBlock>(opVal);
+ OS << "%disp(" << (isLabel? "label " : "addr-of-val ");
+ if (opVal->hasName())
+ OS << opVal->getName();
+ else
+ OS << (const void*) opVal;
+ OS << ")";
+ break;
}
+ case MachineOperand::MO_MachineBasicBlock:
+ OS << "bb<"
+ << ((Value*)MO.getMachineBasicBlock()->getBasicBlock())->getName()
+ << "," << (void*)MO.getMachineBasicBlock()->getBasicBlock() << ">";
+ break;
+ case MachineOperand::MO_FrameIndex:
+ OS << "<fi#" << MO.getFrameIndex() << ">";
+ break;
+ case MachineOperand::MO_ConstantPoolIndex:
+ OS << "<cp#" << MO.getConstantPoolIndex() << ">";
+ break;
+ case MachineOperand::MO_GlobalAddress:
+ OS << "<ga:" << ((Value*)MO.getGlobal())->getName() << ">";
+ break;
+ case MachineOperand::MO_ExternalSymbol:
+ OS << "<es:" << MO.getSymbolName() << ">";
+ break;
+ default:
+ assert(0 && "Unrecognized operand type");
+ }
+
+ if (CloseParen)
+ OS << ")";
+}
+
+void MachineInstr::print(std::ostream &OS, const TargetMachine &TM) const {
+ unsigned StartOp = 0;
+
+ // Specialize printing if op#0 is definition
+ if (getNumOperands() && getOperand(0).isDef() && !getOperand(0).isUse()) {
+ ::print(getOperand(0), OS, TM);
+ OS << " = ";
+ ++StartOp; // Don't print this operand again!
+ }
+ OS << TM.getInstrInfo().getName(getOpcode());
-#undef DEBUG_VAL_OP_ITERATOR
-#ifdef DEBUG_VAL_OP_ITERATOR
- os << "\n\tValue operands are: ";
- for (MachineInstr::val_const_op_iterator vo(&minstr); ! vo.done(); ++vo)
- {
- const Value* val = *vo;
- os << val << (vo.isDef()? "(def), " : ", ");
+ for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) {
+ const MachineOperand& mop = getOperand(i);
+ if (i != StartOp)
+ OS << ",";
+ OS << " ";
+ ::print(mop, OS, TM);
+
+ if (mop.isDef())
+ if (mop.isUse())
+ OS << "<def&use>";
+ else
+ OS << "<def>";
+ }
+
+ // code for printing implicit references
+ if (getNumImplicitRefs()) {
+ OS << "\tImplicitRefs: ";
+ for(unsigned i = 0, e = getNumImplicitRefs(); i != e; ++i) {
+ OS << "\t";
+ OutputValue(OS, getImplicitRef(i));
+ if (getImplicitOp(i).isDef())
+ if (getImplicitOp(i).isUse())
+ OS << "<def&use>";
+ else
+ OS << "<def>";
}
-#endif
+ }
-
-
-#if 1
- // code for printing implict references
+ OS << "\n";
+}
- unsigned NumOfImpRefs = minstr.getNumImplicitRefs();
- if( NumOfImpRefs > 0 ) {
-
- os << "\tImplicit:";
+namespace llvm {
+std::ostream &operator<<(std::ostream &os, const MachineInstr &MI) {
+ // If the instruction is embedded into a basic block, we can find the target
+ // info for the instruction.
+ if (const MachineBasicBlock *MBB = MI.getParent()) {
+ const MachineFunction *MF = MBB->getParent();
+ MI.print(os, MF->getTarget());
+ return os;
+ }
- for(unsigned z=0; z < NumOfImpRefs; z++) {
- os << minstr.getImplicitRef(z);
- if( minstr.implicitRefIsDefined(z)) os << "*";
+ // Otherwise, print it out in the "raw" format without symbolic register names
+ // and such.
+ os << TargetInstrDescriptors[MI.getOpcode()].Name;
+
+ for (unsigned i=0, N=MI.getNumOperands(); i < N; i++) {
+ os << "\t" << MI.getOperand(i);
+ if (MI.getOperand(i).isDef())
+ if (MI.getOperand(i).isUse())
+ os << "<d&u>";
+ else
+ os << "<d>";
+ }
+
+ // code for printing implicit references
+ unsigned NumOfImpRefs = MI.getNumImplicitRefs();
+ if (NumOfImpRefs > 0) {
+ os << "\tImplicit: ";
+ for (unsigned z=0; z < NumOfImpRefs; z++) {
+ OutputValue(os, MI.getImplicitRef(z));
+ if (MI.getImplicitOp(z).isDef())
+ if (MI.getImplicitOp(z).isUse())
+ os << "<d&u>";
+ else
+ os << "<d>";
os << "\t";
}
}
-
-#endif
+
return os << "\n";
}
-static inline std::ostream &OutputOperand(std::ostream &os,
- const MachineOperand &mop)
-{
- Value* val;
- switch (mop.getOperandType())
+std::ostream &operator<<(std::ostream &OS, const MachineOperand &MO) {
+ if (MO.isHiBits32())
+ OS << "%lm(";
+ else if (MO.isLoBits32())
+ OS << "%lo(";
+ else if (MO.isHiBits64())
+ OS << "%hh(";
+ else if (MO.isLoBits64())
+ OS << "%hm(";
+
+ switch (MO.getType())
{
- case MachineOperand::MO_CCRegister:
case MachineOperand::MO_VirtualRegister:
- val = mop.getVRegValue();
- os << "(val ";
- if (val && val->hasName())
- os << val->getName();
- else
- os << val;
- return os << ")";
- case MachineOperand::MO_MachineRegister:
- return os << "(" << mop.getMachineRegNum() << ")";
- default:
- assert(0 && "Unknown operand type");
- return os;
- }
-}
+ if (MO.hasAllocatedReg())
+ OutputReg(OS, MO.getReg());
-
-std::ostream &operator<<(std::ostream &os, const MachineOperand &mop)
-{
- switch(mop.opType)
- {
- case MachineOperand::MO_VirtualRegister:
- case MachineOperand::MO_MachineRegister:
- os << "%reg";
- return OutputOperand(os, mop);
+ if (MO.getVRegValue()) {
+ if (MO.hasAllocatedReg()) OS << "==";
+ OS << "%vreg";
+ OutputValue(OS, MO.getVRegValue());
+ }
+ break;
case MachineOperand::MO_CCRegister:
- os << "%ccreg";
- return OutputOperand(os, mop);
+ OS << "%ccreg";
+ OutputValue(OS, MO.getVRegValue());
+ if (MO.hasAllocatedReg()) {
+ OS << "==";
+ OutputReg(OS, MO.getReg());
+ }
+ break;
+ case MachineOperand::MO_MachineRegister:
+ OutputReg(OS, MO.getMachineRegNum());
+ break;
case MachineOperand::MO_SignExtendedImmed:
- return os << (long)mop.immedVal;
+ OS << (long)MO.getImmedValue();
+ break;
case MachineOperand::MO_UnextendedImmed:
- return os << (long)mop.immedVal;
+ OS << (long)MO.getImmedValue();
+ break;
case MachineOperand::MO_PCRelativeDisp:
{
- const Value* opVal = mop.getVRegValue();
- bool isLabel = isa<Method>(opVal) || isa<BasicBlock>(opVal);
- os << "%disp(" << (isLabel? "label " : "addr-of-val ");
+ const Value* opVal = MO.getVRegValue();
+ bool isLabel = isa<Function>(opVal) || isa<BasicBlock>(opVal);
+ OS << "%disp(" << (isLabel? "label " : "addr-of-val ");
if (opVal->hasName())
- os << opVal->getName();
+ OS << opVal->getName();
else
- os << opVal;
- return os << ")";
+ OS << (const void*) opVal;
+ OS << ")";
+ break;
}
+ case MachineOperand::MO_MachineBasicBlock:
+ OS << "bb<"
+ << ((Value*)MO.getMachineBasicBlock()->getBasicBlock())->getName()
+ << "," << (void*)MO.getMachineBasicBlock()->getBasicBlock() << ">";
+ break;
+ case MachineOperand::MO_FrameIndex:
+ OS << "<fi#" << MO.getFrameIndex() << ">";
+ break;
+ case MachineOperand::MO_ConstantPoolIndex:
+ OS << "<cp#" << MO.getConstantPoolIndex() << ">";
+ break;
+ case MachineOperand::MO_GlobalAddress:
+ OS << "<ga:" << ((Value*)MO.getGlobal())->getName() << ">";
+ break;
+ case MachineOperand::MO_ExternalSymbol:
+ OS << "<es:" << MO.getSymbolName() << ">";
+ break;
default:
assert(0 && "Unrecognized operand type");
break;
}
- return os;
+ if (MO.isHiBits32() || MO.isLoBits32() || MO.isHiBits64() || MO.isLoBits64())
+ OS << ")";
+
+ return OS;
+}
+
}
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