#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/MRegisterInfo.h"
-using std::cerr;
-
// Global variable holding an array of descriptors for machine instructions.
// The actual object needs to be created separately for each target machine.
//
extern const TargetInstrDescriptor *TargetInstrDescriptors;
-// Constructor for instructions with fixed #operands (nearly all)
-MachineInstr::MachineInstr(MachineOpCode _opCode)
- : opCode(_opCode),
- operands(TargetInstrDescriptors[_opCode].numOperands, MachineOperand()),
- numImplicitRefs(0)
-{
- assert(TargetInstrDescriptors[_opCode].numOperands >= 0);
-}
-
// Constructor for instructions with variable #operands
MachineInstr::MachineInstr(MachineOpCode OpCode, unsigned numOperands)
: opCode(OpCode),
+ opCodeFlags(0),
operands(numOperands, MachineOperand()),
numImplicitRefs(0)
{
MachineInstr::MachineInstr(MachineOpCode Opcode, unsigned numOperands,
bool XX, bool YY)
: opCode(Opcode),
+ opCodeFlags(0),
numImplicitRefs(0)
{
operands.reserve(numOperands);
MachineInstr::MachineInstr(MachineBasicBlock *MBB, MachineOpCode Opcode,
unsigned numOperands)
: opCode(Opcode),
+ opCodeFlags(0),
numImplicitRefs(0)
{
assert(MBB && "Cannot use inserting ctor with null basic block!");
{
int NumOperands = TargetInstrDescriptors[opCode].numOperands;
if (NumOperands >= 0 && getNumOperands() >= (unsigned)NumOperands)
- return true; // Broken!
+ return true; // Broken: we have all the operands of this instruction!
return false;
}
operands.resize(numOperands, MachineOperand());
}
-void
-MachineInstr::SetMachineOperandVal(unsigned i,
- MachineOperand::MachineOperandType opType,
- Value* V,
- bool isdef,
- bool isDefAndUse)
-{
+void MachineInstr::SetMachineOperandVal(unsigned i,
+ MachineOperand::MachineOperandType opTy,
+ Value* V) {
assert(i < operands.size()); // may be explicit or implicit op
- operands[i].opType = opType;
+ operands[i].opType = opTy;
operands[i].value = V;
operands[i].regNum = -1;
-
- if (isDefAndUse)
- operands[i].flags = MachineOperand::DEFUSEFLAG;
- else if (isdef || TargetInstrDescriptors[opCode].resultPos == (int) i)
- operands[i].flags = MachineOperand::DEFFLAG;
- else
- operands[i].flags = 0;
}
void
operands[i].flags = 0;
}
-void
-MachineInstr::SetMachineOperandReg(unsigned i,
- int regNum,
- bool isdef) {
+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;
-
- if (isdef || TargetInstrDescriptors[opCode].resultPos == (int) i)
- operands[i].flags = MachineOperand::DEFFLAG;
- else
- operands[i].flags = 0;
-
- insertUsedReg(regNum);
}
void
{
assert(i < getNumOperands()); // must be explicit op
operands[i].setRegForValue(regNum);
- insertUsedReg(regNum);
+}
+
+void
+MachineInstr::SetRegForImplicitRef(unsigned i, int regNum)
+{
+ getImplicitOp(i).setRegForValue(regNum);
}
-// Subsitute all occurrences of Value* oldVal with newVal in all operands
-// and all implicit refs. If defsOnly == true, substitute defs only.
+// Substitute 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)
+MachineInstr::substituteValue(const Value* oldVal, Value* newVal,
+ bool defsOnly, bool notDefsAndUses,
+ bool& someArgsWereIgnored)
{
+ assert((!defsOnly || !notDefsAndUses) &&
+ "notDefsAndUses is irrelevant if defsOnly == true.");
+
unsigned numSubst = 0;
- // Subsitute operands
+ // Substitute operands
for (MachineInstr::val_op_iterator O = begin(), E = end(); O != E; ++O)
if (*O == oldVal)
- if (!defsOnly || O.isDef())
+ if (!defsOnly ||
+ notDefsAndUses && O.isDefOnly() ||
+ !notDefsAndUses && !O.isUseOnly())
{
O.getMachineOperand().value = newVal;
++numSubst;
}
+ else
+ someArgsWereIgnored = true;
- // Subsitute implicit refs
+ // Substitute implicit refs
for (unsigned i=0, N=getNumImplicitRefs(); i < N; ++i)
if (getImplicitRef(i) == oldVal)
- if (!defsOnly || implicitRefIsDefined(i))
+ if (!defsOnly ||
+ notDefsAndUses && getImplicitOp(i).opIsDefOnly() ||
+ !notDefsAndUses && !getImplicitOp(i).opIsUse())
{
getImplicitOp(i).value = newVal;
++numSubst;
}
+ else
+ someArgsWereIgnored = true;
return numSubst;
}
void
MachineInstr::dump() const
{
- cerr << " " << *this;
+ 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())
- return os << val->getName() << ")";
- else
- return os << (void*) val << ")"; // print address only
+ os << " " << val->getName() << ")"; // print name also, if available
+ return os;
}
static inline void OutputReg(std::ostream &os, unsigned RegNo,
unsigned StartOp = 0;
// Specialize printing if op#0 is definition
- if (getNumOperands() && operandIsDefined(0)) {
+ if (getNumOperands() &&
+ (getOperand(0).opIsDefOnly() || getOperand(0).opIsDefAndUse())) {
::print(getOperand(0), OS, TM);
OS << " = ";
++StartOp; // Don't print this operand again!
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(getOperand(i), OS, TM);
+ ::print(mop, OS, TM);
- if (operandIsDefinedAndUsed(i))
+ if (mop.opIsDefAndUse())
OS << "<def&use>";
- else if (operandIsDefined(i))
+ else if (mop.opIsDefOnly())
OS << "<def>";
}
- // code for printing implict references
+ // 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 (implicitRefIsDefinedAndUsed(i))
+ OutputValue(OS, getImplicitRef(i));
+ if (getImplicitOp(i).opIsDefAndUse())
OS << "<def&use>";
- else if (implicitRefIsDefined(i))
+ else if (getImplicitOp(i).opIsDefOnly())
OS << "<def>";
}
}
for (unsigned i=0, N=MI.getNumOperands(); i < N; i++) {
os << "\t" << MI.getOperand(i);
- if (MI.operandIsDefined(i))
+ if (MI.getOperand(i).opIsDefOnly())
os << "<d>";
- if (MI.operandIsDefinedAndUsed(i))
+ if (MI.getOperand(i).opIsDefAndUse())
os << "<d&u>";
}
- // code for printing implict references
+ // 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.implicitRefIsDefined(z)) os << "<d>";
- if (MI.implicitRefIsDefinedAndUsed(z)) os << "<d&u>";
+ if (MI.getImplicitOp(z).opIsDefOnly()) os << "<d>";
+ if (MI.getImplicitOp(z).opIsDefAndUse()) os << "<d&u>";
os << "\t";
}
}