-// $Id$
-//***************************************************************************
-// File:
-// MachineInstr.cpp
+//===-- MachineInstr.cpp --------------------------------------------------===//
//
-// Purpose:
-//
-//
-// Strategy:
-//
-// History:
-// 7/2/01 - Vikram Adve - Created
-//**************************************************************************/
-
+//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/Target/MachineFrameInfo.h"
-#include "llvm/Target/MachineRegInfo.h"
-#include "llvm/Method.h"
-#include "llvm/iOther.h"
-#include "llvm/Instruction.h"
-
-AnnotationID MachineCodeForMethod::AID(
- AnnotationManager::getID("MachineCodeForMethodAnnotation"));
+#include "llvm/Value.h"
+using std::cerr;
-//************************ Class Implementations **************************/
-
// Constructor for instructions with fixed #operands (nearly all)
MachineInstr::MachineInstr(MachineOpCode _opCode,
OpCodeMask _opCodeMask)
{
}
+//
+// 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::SetMachineOperand(unsigned int i,
- MachineOperand::MachineOperandType operandType,
- Value* _val, bool isdef=false)
+MachineInstr::replace(MachineOpCode _opCode,
+ unsigned numOperands,
+ OpCodeMask _opCodeMask)
+{
+ opCode = _opCode;
+ opCodeMask = _opCodeMask;
+ operands.clear();
+ operands.resize(numOperands);
+}
+
+void
+MachineInstr::SetMachineOperandVal(unsigned int i,
+ MachineOperand::MachineOperandType opType,
+ Value* _val,
+ bool isdef,
+ bool isDefAndUse)
{
assert(i < operands.size());
- operands[i].Initialize(operandType, _val);
- operands[i].isDef = isdef ||
- TargetInstrDescriptors[opCode].resultPos == (int) i;
+ operands[i].Initialize(opType, _val);
+ if (isdef || TargetInstrDescriptors[opCode].resultPos == (int) i)
+ operands[i].markDef();
+ if (isDefAndUse)
+ operands[i].markDefAndUse();
}
void
-MachineInstr::SetMachineOperand(unsigned int i,
+MachineInstr::SetMachineOperandConst(unsigned int i,
MachineOperand::MachineOperandType operandType,
- int64_t intValue, bool isdef=false)
+ int64_t intValue)
{
assert(i < operands.size());
+ assert(TargetInstrDescriptors[opCode].resultPos != (int) i &&
+ "immed. constant cannot be defined");
operands[i].InitializeConst(operandType, intValue);
- operands[i].isDef = isdef ||
- TargetInstrDescriptors[opCode].resultPos == (int) i;
}
void
-MachineInstr::SetMachineOperand(unsigned int i,
- int regNum, bool isdef=false)
+MachineInstr::SetMachineOperandReg(unsigned int i,
+ int regNum,
+ bool isdef,
+ bool isDefAndUse,
+ bool isCCReg)
{
assert(i < operands.size());
- operands[i].InitializeReg(regNum);
- operands[i].isDef = isdef ||
- TargetInstrDescriptors[opCode].resultPos == (int) i;
+ operands[i].InitializeReg(regNum, isCCReg);
+ if (isdef || TargetInstrDescriptors[opCode].resultPos == (int) i)
+ operands[i].markDef();
+ if (isDefAndUse)
+ operands[i].markDefAndUse();
+ regsUsed.insert(regNum);
}
void
-MachineInstr::dump(unsigned int indent) const
+MachineInstr::SetRegForOperand(unsigned i, int regNum)
{
- for (unsigned i=0; i < indent; i++)
- cout << " ";
-
- cout << *this;
+ operands[i].setRegForValue(regNum);
+ regsUsed.insert(regNum);
}
-ostream&
-operator<< (ostream& os, const MachineInstr& minstr)
+
+// Subsitute all occurrences of Value* oldVal with newVal in all operands
+// and all implicit refs. If defsOnly == true, substitute defs only.
+unsigned
+MachineInstr::substituteValue(const Value* oldVal, Value* newVal, bool defsOnly)
+{
+ unsigned numSubst = 0;
+
+ // Subsitute operands
+ for (MachineInstr::val_op_iterator O = begin(), E = end(); O != E; ++O)
+ if (*O == oldVal)
+ if (!defsOnly || O.isDef())
+ {
+ O.getMachineOperand().value = newVal;
+ ++numSubst;
+ }
+
+ // Subsitute implicit refs
+ for (unsigned i=0, N=implicitRefs.size(); i < N; ++i)
+ if (implicitRefs[i] == oldVal)
+ if (!defsOnly || implicitRefIsDefined(i))
+ {
+ implicitRefs[i] = newVal;
+ ++numSubst;
+ }
+
+ return numSubst;
+}
+
+
+void
+MachineInstr::dump() const
+{
+ cerr << " " << *this;
+}
+
+static inline std::ostream&
+OutputValue(std::ostream &os, const Value* val)
+{
+ os << "(val ";
+ if (val && val->hasName())
+ return os << val->getName() << ")";
+ else
+ return os << (void*) val << ")"; // print address only
+}
+
+static inline std::ostream&
+OutputReg(std::ostream &os, unsigned int regNum)
+{
+ return os << "%mreg(" << regNum << ")";
+}
+
+std::ostream &operator<<(std::ostream& os, const MachineInstr& minstr)
{
os << TargetInstrDescriptors[minstr.opCode].opCodeString;
- for (unsigned i=0, N=minstr.getNumOperands(); i < N; i++)
+ for (unsigned i=0, N=minstr.getNumOperands(); i < N; i++) {
os << "\t" << minstr.getOperand(i);
+ if( minstr.operandIsDefined(i) )
+ os << "*";
+ if( minstr.operandIsDefinedAndUsed(i) )
+ os << "*";
+ }
-#undef DEBUG_VAL_OP_ITERATOR
-#ifdef DEBUG_VAL_OP_ITERATOR
- os << endl << "\tValue operands are: ";
- for (MachineInstr::val_op_const_iterator vo(&minstr); ! vo.done(); ++vo)
- {
- const Value* val = *vo;
- os << val << (vo.isDef()? "(def), " : ", ");
- }
-#endif
-
-
-
-#if 1
// code for printing implict references
-
unsigned NumOfImpRefs = minstr.getNumImplicitRefs();
if( NumOfImpRefs > 0 ) {
-
- os << "\tImplicit:";
-
+ os << "\tImplicit: ";
for(unsigned z=0; z < NumOfImpRefs; z++) {
- os << minstr.getImplicitRef(z);
- cout << "\t";
+ OutputValue(os, minstr.getImplicitRef(z));
+ if( minstr.implicitRefIsDefined(z)) os << "*";
+ if( minstr.implicitRefIsDefinedAndUsed(z)) os << "*";
+ os << "\t";
}
}
-
-#endif
-
-
- os << endl;
- return os;
-}
-
-static inline ostream&
-OutputOperand(ostream &os, const MachineOperand &mop)
-{
- switch (mop.getOperandType())
- {
- case MachineOperand::MO_CCRegister:
- case MachineOperand::MO_VirtualRegister:
- return os << "(val " << mop.getVRegValue() << ")";
- case MachineOperand::MO_MachineRegister:
- return os << "(" << mop.getMachineRegNum() << ")";
- default:
- assert(0 && "Unknown operand type");
- return os;
- }
+ return os << "\n";
}
-
-ostream&
-operator<<(ostream &os, const MachineOperand &mop)
+std::ostream &operator<<(std::ostream &os, const MachineOperand &mop)
{
+ if (mop.opHiBits32())
+ os << "%lm(";
+ else if (mop.opLoBits32())
+ os << "%lo(";
+ else if (mop.opHiBits64())
+ os << "%hh(";
+ else if (mop.opLoBits64())
+ os << "%hm(";
+
switch(mop.opType)
{
case MachineOperand::MO_VirtualRegister:
- case MachineOperand::MO_MachineRegister:
os << "%reg";
- return OutputOperand(os, mop);
+ OutputValue(os, mop.getVRegValue());
+ if (mop.hasAllocatedReg())
+ os << "==" << OutputReg(os, mop.getAllocatedRegNum());
+ break;
case MachineOperand::MO_CCRegister:
os << "%ccreg";
- return OutputOperand(os, mop);
+ OutputValue(os, mop.getVRegValue());
+ if (mop.hasAllocatedReg())
+ os << "==" << OutputReg(os, mop.getAllocatedRegNum());
+ break;
+ case MachineOperand::MO_MachineRegister:
+ OutputReg(os, mop.getMachineRegNum());
+ break;
case MachineOperand::MO_SignExtendedImmed:
- return os << mop.immedVal;
+ os << (long)mop.immedVal;
+ break;
case MachineOperand::MO_UnextendedImmed:
- return os << mop.immedVal;
+ os << (long)mop.immedVal;
+ break;
case MachineOperand::MO_PCRelativeDisp:
{
const Value* opVal = mop.getVRegValue();
- bool isLabel = isa<Method>(opVal) || isa<BasicBlock>(opVal);
- return os << "%disp("
- << (isLabel? "label " : "addr-of-val ")
- << opVal << ")";
+ 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;
}
default:
assert(0 && "Unrecognized operand type");
break;
}
- return os;
-}
-
-static unsigned int
-ComputeMaxOptionalArgsSize(const TargetMachine& target, const Method* method)
-{
- const MachineFrameInfo& frameInfo = target.getFrameInfo();
-
- unsigned int maxSize = 0;
-
- for (Method::inst_const_iterator I=method->inst_begin(),E=method->inst_end();
- I != E; ++I)
- if ((*I)->getOpcode() == Instruction::Call)
- {
- CallInst* callInst = cast<CallInst>(*I);
- unsigned int numOperands = callInst->getNumOperands() - 1;
- unsigned int numExtra = numOperands
- - frameInfo.getNumFixedOutgoingArgs();
-
- unsigned int sizeForThisCall;
- if (frameInfo.argsOnStackHaveFixedSize())
- {
- int argSize = frameInfo.getSizeOfEachArgOnStack();
- sizeForThisCall = numExtra * (unsigned) argSize;
- }
- else
- {
- assert(0 && "UNTESTED CODE: Size per stack argument is not fixed on this architecture: use actual arg sizes to compute MaxOptionalArgsSize");
- sizeForThisCall = 0;
- for (unsigned i=0; i < numOperands; ++i)
- sizeForThisCall += target.findOptimalStorageSize(callInst->
- getOperand(i)->getType());
- }
-
- if (maxSize < sizeForThisCall)
- maxSize = sizeForThisCall;
- }
-
- return maxSize;
-}
-
-
-/*ctor*/
-MachineCodeForMethod::MachineCodeForMethod(const Method* _M,
- const TargetMachine& target)
- : Annotation(AID),
- method(_M), compiledAsLeaf(false), staticStackSize(0),
- automaticVarsSize(0), regSpillsSize(0),
- currentOptionalArgsSize(0), maxOptionalArgsSize(0),
- currentTmpValuesSize(0)
-{
- maxOptionalArgsSize = ComputeMaxOptionalArgsSize(target, method);
- staticStackSize = maxOptionalArgsSize +
- target.getFrameInfo().getMinStackFrameSize();
-}
-
-int
-MachineCodeForMethod::allocateLocalVar(const TargetMachine& target,
- const Value* val)
-{
- // Check if we've allocated a stack slot for this value already
- //
- int offset = getOffset(val);
- if (offset == INVALID_FRAME_OFFSET)
- {
- bool growUp;
- int firstOffset =target.getFrameInfo().getFirstAutomaticVarOffset(*this,
- growUp);
- offset = growUp? firstOffset + getAutomaticVarsSize()
- : firstOffset - getAutomaticVarsSize();
- offsets[val] = offset;
-
- unsigned int size = target.findOptimalStorageSize(val->getType());
- incrementAutomaticVarsSize(size);
- }
- return offset;
-}
-
-int
-MachineCodeForMethod::allocateSpilledValue(const TargetMachine& target,
- const Type* type)
-{
- bool growUp;
- int firstOffset = target.getFrameInfo().getRegSpillAreaOffset(*this, growUp);
- int offset = growUp? firstOffset + getRegSpillsSize()
- : firstOffset - getRegSpillsSize();
-
- unsigned int size = target.findOptimalStorageSize(type);
- incrementRegSpillsSize(size);
-
- return offset;
-}
-
-int
-MachineCodeForMethod::allocateOptionalArg(const TargetMachine& target,
- const Type* type)
-{
- const MachineFrameInfo& frameInfo = target.getFrameInfo();
- bool growUp;
- int firstOffset = frameInfo.getFirstOptionalOutgoingArgOffset(*this, growUp);
- int offset = growUp? firstOffset + getCurrentOptionalArgsSize()
- : firstOffset - getCurrentOptionalArgsSize();
-
- int size = MAXINT;
- if (frameInfo.argsOnStackHaveFixedSize())
- size = frameInfo.getSizeOfEachArgOnStack();
- else
- {
- assert(0 && "UNTESTED CODE: Size per stack argument is not fixed on this architecture: use actual argument sizes for computing optional arg offsets");
- size = target.findOptimalStorageSize(type);
- }
-
- incrementCurrentOptionalArgsSize(size);
-
- return offset;
-}
-
-void
-MachineCodeForMethod::resetOptionalArgs(const TargetMachine& target)
-{
- currentOptionalArgsSize = 0;
-}
-
-int
-MachineCodeForMethod::pushTempValue(const TargetMachine& target,
- unsigned int size)
-{
- bool growUp;
- int firstTmpOffset = target.getFrameInfo().getTmpAreaOffset(*this, growUp);
- int offset = growUp? firstTmpOffset + currentTmpValuesSize
- : firstTmpOffset - currentTmpValuesSize;
- currentTmpValuesSize += size;
- return offset;
-}
-
-void
-MachineCodeForMethod::popAllTempValues(const TargetMachine& target)
-{
- currentTmpValuesSize = 0;
-}
-
-
-// void
-// MachineCodeForMethod::putLocalVarAtOffsetFromSP(const Value* local,
-// int offset,
-// unsigned int size)
-// {
-// offsetsFromSP[local] = offset;
-// incrementAutomaticVarsSize(size);
-// }
-//
-
-int
-MachineCodeForMethod::getOffset(const Value* val) const
-{
- hash_map<const Value*, int>::const_iterator pair = offsets.find(val);
- return (pair == offsets.end())? INVALID_FRAME_OFFSET : (*pair).second;
-}
-
-
-// int
-// MachineCodeForMethod::getOffsetFromSP(const Value* local) const
-// {
-// hash_map<const Value*, int>::const_iterator pair = offsetsFromSP.find(local);
-// return (pair == offsetsFromSP.end())? INVALID_FRAME_OFFSET : (*pair).second;
-// }
-
-
-void
-MachineCodeForMethod::dump() const
-{
- cout << "\n" << method->getReturnType()
- << " \"" << method->getName() << "\"" << endl;
+ if (mop.flags &
+ (MachineOperand::HIFLAG32 | MachineOperand::LOFLAG32 |
+ MachineOperand::HIFLAG64 | MachineOperand::LOFLAG64))
+ os << ")";
- for (Method::const_iterator BI = method->begin(); BI != method->end(); ++BI)
- {
- BasicBlock* bb = *BI;
- cout << "\n"
- << (bb->hasName()? bb->getName() : "Label")
- << " (" << bb << ")" << ":"
- << endl;
-
- MachineCodeForBasicBlock& mvec = bb->getMachineInstrVec();
- for (unsigned i=0; i < mvec.size(); i++)
- cout << "\t" << *mvec[i];
- }
- cout << endl << "End method \"" << method->getName() << "\""
- << endl << endl;
+ return os;
}
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