-// $Id$
-//***************************************************************************
-// File:
-// MachineInstr.cpp
-//
-// Purpose:
-//
-//
-// Strategy:
-//
-// History:
-// 7/2/01 - Vikram Adve - Created
-//**************************************************************************/
-
+//===-- 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.
+//
+//===----------------------------------------------------------------------===//
#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"));
-
-
-//************************ Class Implementations **************************/
-
-// 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);
-}
-
-// Constructor for instructions with variable #operands
-MachineInstr::MachineInstr(MachineOpCode _opCode,
- unsigned numOperands,
- OpCodeMask _opCodeMask)
- : opCode(_opCode),
- opCodeMask(_opCodeMask),
- operands(numOperands)
-{
-}
-
-void
-MachineInstr::SetMachineOperand(unsigned int i,
- MachineOperand::MachineOperandType operandType,
- Value* _val, bool isdef=false)
-{
- assert(i < operands.size());
- operands[i].Initialize(operandType, _val);
- operands[i].isDef = isdef ||
- TargetInstrDescriptors[opCode].resultPos == (int) i;
-}
-
-void
-MachineInstr::SetMachineOperand(unsigned int i,
- MachineOperand::MachineOperandType operandType,
- int64_t intValue, bool isdef=false)
-{
- assert(i < operands.size());
- operands[i].InitializeConst(operandType, intValue);
- operands[i].isDef = isdef ||
- TargetInstrDescriptors[opCode].resultPos == (int) i;
-}
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Support/LeakDetector.h"
+#include <iostream>
-void
-MachineInstr::SetMachineOperand(unsigned int i,
- int regNum, bool isdef=false)
-{
- assert(i < operands.size());
- operands[i].InitializeReg(regNum);
- operands[i].isDef = isdef ||
- TargetInstrDescriptors[opCode].resultPos == (int) i;
-}
-
-void
-MachineInstr::dump(unsigned int indent) const
-{
- for (unsigned i=0; i < indent; i++)
- cout << " ";
-
- cout << *this;
+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;
+}
+
+/// 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)
+ : Opcode(opcode), parent(0) {
+ Operands.reserve(numOperands);
+ // Make sure that we get added to a machine basicblock
+ LeakDetector::addGarbageObject(this);
+}
+
+/// 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), 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!
+}
+
+/// MachineInstr ctor - Copies MachineInstr arg exactly
+///
+MachineInstr::MachineInstr(const MachineInstr &MI) {
+ Opcode = MI.getOpcode();
+ Operands.reserve(MI.getNumOperands());
+
+ // Add operands
+ for (unsigned i = 0; i != MI.getNumOperands(); ++i)
+ Operands.push_back(MI.getOperand(i));
+
+ // Set parent, next, and prev to null
+ parent = 0;
+ prev = 0;
+ next = 0;
+}
+
+
+MachineInstr::~MachineInstr() {
+ LeakDetector::removeGarbageObject(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 ((TargetInstrDescriptors[Opcode].Flags & M_VARIABLE_OPS) == 0 &&
+ getNumOperands() >= (unsigned)NumOperands)
+ return true; // Broken: we have all the operands of this instruction!
+ return false;
+}
+
+void MachineInstr::dump() const {
+ std::cerr << " " << *this;
+}
+
+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 = 0;
+
+ if (TM) MRI = TM->getRegisterInfo();
+
+ switch (MO.getType()) {
+ case MachineOperand::MO_Register:
+ OutputReg(OS, MO.getReg(), MRI);
+ break;
+ case MachineOperand::MO_Immediate:
+ OS << 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();
+ if (MO.getOffset()) OS << "+" << MO.getOffset();
+ OS << ">";
+ break;
+ case MachineOperand::MO_ExternalSymbol:
+ OS << "<es:" << MO.getSymbolName();
+ if (MO.getOffset()) OS << "+" << MO.getOffset();
+ OS << ">";
+ break;
+ default:
+ assert(0 && "Unrecognized operand type");
+ }
}
-ostream&
-operator<< (ostream& os, const MachineInstr& minstr)
-{
- os << TargetInstrDescriptors[minstr.opCode].opCodeString;
-
- for (unsigned i=0, N=minstr.getNumOperands(); i < N; i++)
- os << "\t" << minstr.getOperand(i);
-
-#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
-
-
+void MachineInstr::print(std::ostream &OS, const TargetMachine *TM) const {
+ unsigned StartOp = 0;
-#if 1
- // code for printing implict references
-
- unsigned NumOfImpRefs = minstr.getNumImplicitRefs();
- if( NumOfImpRefs > 0 ) {
-
- os << "\tImplicit:";
-
- for(unsigned z=0; z < NumOfImpRefs; z++) {
- os << minstr.getImplicitRef(z);
- cout << "\t";
- }
+ // 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!
}
-#endif
-
-
- os << endl;
-
- return os;
-}
-
-static inline ostream&
-OutputOperand(ostream &os, const MachineOperand &mop)
-{
- Value* val;
- switch (mop.getOperandType())
- {
- case MachineOperand::MO_CCRegister:
- case MachineOperand::MO_VirtualRegister:
- val = mop.getVRegValue();
- os << "(val ";
- if (val && val->hasName())
- os << val->getName().c_str();
+ // 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 << val;
- return os << ")";
- case MachineOperand::MO_MachineRegister:
- return os << "(" << mop.getMachineRegNum() << ")";
- default:
- assert(0 && "Unknown operand type");
- return os;
- }
-}
-
-
-ostream&
-operator<<(ostream &os, const MachineOperand &mop)
-{
- switch(mop.opType)
- {
- case MachineOperand::MO_VirtualRegister:
- case MachineOperand::MO_MachineRegister:
- os << "%reg";
- return OutputOperand(os, mop);
- case MachineOperand::MO_CCRegister:
- os << "%ccreg";
- return OutputOperand(os, mop);
- case MachineOperand::MO_SignExtendedImmed:
- return os << mop.immedVal;
- case MachineOperand::MO_UnextendedImmed:
- return os << mop.immedVal;
- case MachineOperand::MO_PCRelativeDisp:
- {
- const Value* opVal = mop.getVRegValue();
- bool isLabel = isa<Method>(opVal) || isa<BasicBlock>(opVal);
- os << "%disp(" << (isLabel? "label " : "addr-of-val ");
- if (opVal->hasName())
- os << opVal->getName().c_str();
- else
- os << opVal;
- return os << ")";
- }
- 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;
- int numExtra = (int) numOperands - frameInfo.getNumFixedOutgoingArgs();
- if (numExtra <= 0)
- continue;
-
- 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)
- {
- unsigned int size = target.findOptimalStorageSize(val->getType());
- unsigned char align = target.DataLayout.getTypeAlignment(val->getType());
-
- offset = getAutomaticVarsSize();
- if (unsigned int mod = offset % align)
- {
- offset += align - mod;
- size += align - mod;
- }
-
- bool growUp;
- int firstOffset =target.getFrameInfo().getFirstAutomaticVarOffset(*this,
- growUp);
- offset = growUp? firstOffset + offset
- : firstOffset - offset - size;
-
- offsets[val] = offset;
-
- incrementAutomaticVarsSize(size);
- }
- return offset;
-}
-
-int
-MachineCodeForMethod::allocateSpilledValue(const TargetMachine& target,
- const Type* type)
-{
- unsigned int size = target.findOptimalStorageSize(type);
- unsigned char align = target.DataLayout.getTypeAlignment(type);
-
- int offset = getRegSpillsSize();
- if (unsigned int mod = offset % align)
- {
- offset += align - mod;
- size += align - mod;
- }
-
- bool growUp;
- int firstOffset = target.getFrameInfo().getRegSpillAreaOffset(*this, growUp);
- offset = growUp? firstOffset + offset
- : firstOffset - offset - size;
-
- incrementRegSpillsSize(size);
-
- return offset;
-}
-
-int
-MachineCodeForMethod::allocateOptionalArg(const TargetMachine& target,
- const Type* type)
-{
- const MachineFrameInfo& frameInfo = target.getFrameInfo();
-
- int size = MAXINT;
- if (frameInfo.argsOnStackHaveFixedSize())
- size = frameInfo.getSizeOfEachArgOnStack();
- else
- {
- size = target.findOptimalStorageSize(type);
- assert(0 && "UNTESTED CODE: Size per stack argument is not fixed on this architecture: use actual argument sizes for computing optional arg offsets");
- }
- unsigned char align = target.DataLayout.getTypeAlignment(type);
-
- int offset = getCurrentOptionalArgsSize();
- if (unsigned int mod = offset % align)
- {
- offset += align - mod;
- size += align - mod;
- }
-
- bool growUp;
- int firstOffset = frameInfo.getFirstOptionalOutgoingArgOffset(*this, growUp);
- offset = growUp? firstOffset + offset
- : firstOffset - offset - size;
-
- incrementCurrentOptionalArgsSize(size);
-
- return offset;
-}
-
-void
-MachineCodeForMethod::resetOptionalArgs(const TargetMachine& target)
-{
- currentOptionalArgsSize = 0;
-}
-
-int
-MachineCodeForMethod::pushTempValue(const TargetMachine& target,
- unsigned int size)
-{
- // Compute a power-of-2 alignment according to the possible sizes,
- // but not greater than the alignment of the largest type we support
- // (currently a double word -- see class TargetData).
- unsigned char align = 1;
- for (; align < size && align < target.DataLayout.getDoubleAlignment();
- align = 2*align)
- ;
-
- int offset = currentTmpValuesSize;
- if (unsigned int mod = offset % align)
- {
- offset += align - mod;
- size += align - mod;
- }
-
- bool growUp;
- int firstTmpOffset = target.getFrameInfo().getTmpAreaOffset(*this, growUp);
- offset = growUp? firstTmpOffset + offset
- : firstTmpOffset - offset - size;
-
- currentTmpValuesSize += size;
- return offset;
-}
+ OS << "<def>";
+ }
-void
-MachineCodeForMethod::popAllTempValues(const TargetMachine& target)
-{
- currentTmpValuesSize = 0;
+ OS << "\n";
}
+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)
+ MI.print(os, &MF->getTarget());
+ else
+ MI.print(os, 0);
+ return os;
+ }
-// 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;
-}
-
+ // Otherwise, print it out in the "raw" format without symbolic register names
+ // and such.
+ os << TargetInstrDescriptors[MI.getOpcode()].Name;
-// 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;
-// }
+ 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>";
+ }
+ return os << "\n";
+}
+
+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;
+ }
-void
-MachineCodeForMethod::dump() const
-{
- cout << "\n" << method->getReturnType()
- << " \"" << method->getName() << "\"" << endl;
-
- 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;
}
projects / oota-llvm.git / blobdiff