//===-- MachineInstr.cpp --------------------------------------------------===//
-//
+//
// 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.
-//
+//
//===----------------------------------------------------------------------===//
//
// 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 "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/MRegisterInfo.h"
-#include "Support/LeakDetector.h"
+#include "llvm/Support/LeakDetector.h"
#include <iostream>
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...
//
extern const TargetInstrDescriptor *TargetInstrDescriptors;
}
-// 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);
-}
-
/// 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);
+MachineInstr::MachineInstr(short opcode, unsigned numOperands)
+ : Opcode(opcode), parent(0) {
+ Operands.reserve(numOperands);
// Make sure that we get added to a machine basicblock
LeakDetector::addGarbageObject(this);
}
///
MachineInstr::MachineInstr(MachineBasicBlock *MBB, short opcode,
unsigned numOperands)
- : Opcode(opcode), numImplicitRefs(0), parent(0) {
+ : Opcode(opcode), parent(0) {
assert(MBB && "Cannot use inserting ctor with null basic block!");
- operands.reserve(numOperands);
+ 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!
}
-///MachineInstr ctor - Copies MachineInstr arg exactly
+/// MachineInstr ctor - Copies MachineInstr arg exactly
+///
MachineInstr::MachineInstr(const MachineInstr &MI) {
Opcode = MI.getOpcode();
- numImplicitRefs = MI.getNumImplicitRefs();
- operands.reserve(MI.getNumOperands());
+ Operands.reserve(MI.getNumOperands());
- //Add operands
- for(unsigned i=0; i < MI.getNumOperands(); ++i)
- operands.push_back(MachineOperand(MI.getOperand(i)));
+ // Add operands
+ for (unsigned i = 0; i != MI.getNumOperands(); ++i)
+ Operands.push_back(MI.getOperand(i));
- //Set parent, next, and prev to null
+ // Set parent, next, and prev to null
parent = 0;
prev = 0;
next = 0;
-
}
-MachineInstr::~MachineInstr()
-{
+MachineInstr::~MachineInstr() {
LeakDetector::removeGarbageObject(this);
}
-///clone - Create a copy of 'this' instruction that is identical in
-///all ways except the following: The instruction has no parent The
-///instruction has no name
-MachineInstr* MachineInstr::clone() const {
- return new MachineInstr(*this);
+/// removeFromParent - This method unlinks 'this' from the containing basic
+/// block, and returns it, but does not delete it.
+MachineInstr *MachineInstr::removeFromParent() {
+ assert(getParent() && "Not embedded in a basic block!");
+ getParent()->remove(this);
+ return 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)
+ if ((TargetInstrDescriptors[Opcode].Flags & M_VARIABLE_OPS) == 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].contents.value = V;
- operands[i].regNum = -1;
-}
-
-void
-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].opType = opTy;
- operands[i].contents.value = NULL;
- operands[i].contents.immedVal = intValue;
- operands[i].regNum = -1;
- operands[i].flags = 0;
-}
-
-void MachineInstr::SetMachineOperandReg(unsigned i, int regNum) {
- assert(i < getNumOperands()); // must be explicit op
-
- operands[i].opType = MachineOperand::MO_MachineRegister;
- operands[i].contents.value = NULL;
- operands[i].regNum = regNum;
-}
-
-// 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)
-{
- assert((!defsOnly || !notDefsAndUses) &&
- "notDefsAndUses is irrelevant if defsOnly == true.");
+/// isIdenticalTo - Return true if this operand is identical to the specified
+/// operand.
+bool MachineOperand::isIdenticalTo(const MachineOperand &Other) const {
+ if (getType() != Other.getType()) return false;
- 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().contents.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).contents.value = newVal;
- ++numSubst;
- }
- else
- someArgsWereIgnored = true;
-
- return numSubst;
+ switch (getType()) {
+ default: assert(0 && "Unrecognized operand type");
+ case MachineOperand::MO_Register:
+ return getReg() == Other.getReg() && isDef() == Other.isDef();
+ case MachineOperand::MO_Immediate:
+ return getImm() == Other.getImm();
+ case MachineOperand::MO_MachineBasicBlock:
+ return getMBB() == Other.getMBB();
+ case MachineOperand::MO_FrameIndex:
+ return getFrameIndex() == Other.getFrameIndex();
+ case MachineOperand::MO_ConstantPoolIndex:
+ return getConstantPoolIndex() == Other.getConstantPoolIndex() &&
+ getOffset() == Other.getOffset();
+ case MachineOperand::MO_JumpTableIndex:
+ return getJumpTableIndex() == Other.getJumpTableIndex();
+ case MachineOperand::MO_GlobalAddress:
+ return getGlobal() == Other.getGlobal() && getOffset() == Other.getOffset();
+ case MachineOperand::MO_ExternalSymbol:
+ return !strcmp(getSymbolName(), Other.getSymbolName()) &&
+ getOffset() == Other.getOffset();
+ }
}
+
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)) {
static void print(const MachineOperand &MO, std::ostream &OS,
const TargetMachine *TM) {
-
- const MRegisterInfo *MRI = 0;
-
- if(TM)
- MRI = TM->getRegisterInfo();
-
+ const MRegisterInfo *MRI = 0;
+
+ if (TM) 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;
-
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);
- }
+ case MachineOperand::MO_Register:
+ 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 << ")";
+ case MachineOperand::MO_Immediate:
+ OS << MO.getImmedValue();
break;
- }
case MachineOperand::MO_MachineBasicBlock:
OS << "mbb<"
<< ((Value*)MO.getMachineBasicBlock()->getBasicBlock())->getName()
case MachineOperand::MO_ConstantPoolIndex:
OS << "<cp#" << MO.getConstantPoolIndex() << ">";
break;
+ case MachineOperand::MO_JumpTableIndex:
+ OS << "<jt#" << MO.getJumpTableIndex() << ">";
+ break;
case MachineOperand::MO_GlobalAddress:
- OS << "<ga:" << ((Value*)MO.getGlobal())->getName() << ">";
+ OS << "<ga:" << ((Value*)MO.getGlobal())->getName();
+ if (MO.getOffset()) OS << "+" << MO.getOffset();
+ OS << ">";
break;
case MachineOperand::MO_ExternalSymbol:
- OS << "<es:" << MO.getSymbolName() << ">";
+ OS << "<es:" << MO.getSymbolName();
+ if (MO.getOffset()) OS << "+" << MO.getOffset();
+ OS << ">";
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()) {
+ if (getNumOperands() && getOperand(0).isReg() && getOperand(0).isDef()) {
::print(getOperand(0), OS, TM);
OS << " = ";
++StartOp; // Don't print this operand again!
}
- //Must check if Target machine is not null because machine BB could not
- //be attached to a Machine function yet
- if(TM)
+ // Must check if Target machine is not null because machine BB could not
+ // be attached to a Machine function yet
+ if (TM)
OS << TM->getInstrInfo()->getName(getOpcode());
-
+
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>";
- }
+
+ if (mop.isReg() && mop.isDef())
+ OS << "<def>";
}
-
+
OS << "\n";
}
-namespace llvm {
-std::ostream &operator<<(std::ostream &os, const MachineInstr &MI) {
+std::ostream &llvm::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();
- if(MF)
+ if (MF)
MI.print(os, &MF->getTarget());
else
MI.print(os, 0);
// 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++) {
+
+ 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";
- }
+ if (MI.getOperand(i).isReg() && MI.getOperand(i).isDef())
+ os << "<d>";
}
-
+
return os << "\n";
}
-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_VirtualRegister:
- if (MO.hasAllocatedReg())
- OutputReg(OS, MO.getReg());
-
- if (MO.getVRegValue()) {
- if (MO.hasAllocatedReg()) OS << "==";
- OS << "%vreg";
- OutputValue(OS, MO.getVRegValue());
- }
- break;
- case MachineOperand::MO_CCRegister:
- 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:
- 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 << "<mbb:"
- << ((Value*)MO.getMachineBasicBlock()->getBasicBlock())->getName()
- << "@" << (void*)MO.getMachineBasicBlock() << ">";
- 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;
- }
-
- if (MO.isHiBits32() || MO.isLoBits32() || MO.isHiBits64() || MO.isLoBits64())
- OS << ")";
-
- return OS;
-}
+std::ostream &llvm::operator<<(std::ostream &OS, const MachineOperand &MO) {
+ switch (MO.getType()) {
+ case MachineOperand::MO_Register:
+ OutputReg(OS, MO.getReg());
+ break;
+ case MachineOperand::MO_Immediate:
+ OS << (long)MO.getImmedValue();
+ break;
+ case MachineOperand::MO_MachineBasicBlock:
+ OS << "<mbb:"
+ << ((Value*)MO.getMachineBasicBlock()->getBasicBlock())->getName()
+ << "@" << (void*)MO.getMachineBasicBlock() << ">";
+ break;
+ case MachineOperand::MO_FrameIndex:
+ OS << "<fi#" << MO.getFrameIndex() << ">";
+ break;
+ case MachineOperand::MO_ConstantPoolIndex:
+ OS << "<cp#" << MO.getConstantPoolIndex() << ">";
+ break;
+ case MachineOperand::MO_JumpTableIndex:
+ OS << "<jt#" << MO.getJumpTableIndex() << ">";
+ 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;
}