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Remove separate vector of implicit refs from MachineInstr, and

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instead record them as extra operands in the operands[] vector.
Also, move CallArgsDescriptor into this class instead of making it an
annotation on the machine instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4399 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve
2002-10-29 19:41:18 +00:00
parent e68a3435ee
commit a2bae305fb
5 changed files with 161 additions and 90 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/CodeGen/MachineInstr.cpp
+24 -11
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@@ -19,24 +19,33 @@ extern const MachineInstrDescriptor *TargetInstrDescriptors;
// Constructor for instructions with fixed #operands (nearly all)
MachineInstr::MachineInstr(MachineOpCode _opCode)
: opCode(_opCode),
operands(TargetInstrDescriptors[_opCode].numOperands, MachineOperand()) {
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), operands(numOperands, MachineOperand()) {
: opCode(OpCode),
operands(numOperands, MachineOperand()),
numImplicitRefs(0)
{
}
MachineInstr::MachineInstr(MachineOpCode Opcode, unsigned numOperands,
bool XX, bool YY) : opCode(Opcode) {
bool XX, bool YY)
: opCode(Opcode),
numImplicitRefs(0)
{
operands.reserve(numOperands);
}
// OperandComplete - Return true if it's illegal to add a new operand
bool MachineInstr::OperandsComplete() const {
bool MachineInstr::OperandsComplete() const
{
int NumOperands = TargetInstrDescriptors[opCode].numOperands;
if (NumOperands >= 0 && operands.size() >= (unsigned)NumOperands)
if (NumOperands >= 0 && getNumOperands() >= (unsigned)NumOperands)
return true; // Broken!
return false;
}
@@ -47,7 +56,10 @@ bool MachineInstr::OperandsComplete() const {
// This only resets the size of the operand vector and initializes it.
// The new operands must be set explicitly later.
//
void MachineInstr::replace(MachineOpCode Opcode, unsigned numOperands) {
void MachineInstr::replace(MachineOpCode 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());
@@ -60,7 +72,7 @@ MachineInstr::SetMachineOperandVal(unsigned i,
bool isdef,
bool isDefAndUse)
{
assert(i < operands.size());
assert(i < operands.size()); // may be explicit or implicit op
operands[i].opType = opType;
operands[i].value = V;
operands[i].regNum = -1;
@@ -77,7 +89,7 @@ MachineInstr::SetMachineOperandConst(unsigned i,
MachineOperand::MachineOperandType operandType,
int64_t intValue)
{
assert(i < operands.size());
assert(i < getNumOperands()); // must be explicit op
assert(TargetInstrDescriptors[opCode].resultPos != (int) i &&
"immed. constant cannot be defined");
@@ -92,7 +104,7 @@ void
MachineInstr::SetMachineOperandReg(unsigned i,
int regNum,
bool isdef) {
assert(i < operands.size());
assert(i < getNumOperands()); // must be explicit op
operands[i].opType = MachineOperand::MO_MachineRegister;
operands[i].value = NULL;
@@ -107,6 +119,7 @@ MachineInstr::SetMachineOperandReg(unsigned i,
void
MachineInstr::SetRegForOperand(unsigned i, int regNum)
{
assert(i < getNumOperands()); // must be explicit op
operands[i].setRegForValue(regNum);
insertUsedReg(regNum);
}
@@ -129,11 +142,11 @@ MachineInstr::substituteValue(const Value* oldVal, Value* newVal, bool defsOnly)
}
// Subsitute implicit refs
for (unsigned i=0, N=implicitRefs.size(); i < N; ++i)
for (unsigned i=0, N=getNumImplicitRefs(); i < N; ++i)
if (getImplicitRef(i) == oldVal)
if (!defsOnly || implicitRefIsDefined(i))
{
implicitRefs[i].Val = newVal;
getImplicitOp(i).value = newVal;
++numSubst;
}