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Add @earlyclobber TableGen constraint

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91554 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2009-12-16 19:43:02 +00:00
parent 0a0124e4f6
commit 06801722a4
3 changed files with 48 additions and 9 deletions
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24
lib/CodeGen/MachineInstr.cpp
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@ -555,8 +555,13 @@ void MachineInstr::addOperand(const MachineOperand &Op) {
Operands.back().ParentMI = this;
// If the operand is a register, update the operand's use list.
if (Op.isReg())
if (Op.isReg()) {
Operands.back().AddRegOperandToRegInfo(RegInfo);
// If the register operand is flagged as early, mark the operand as such
unsigned OpNo = Operands.size() - 1;
if (TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1)
Operands[OpNo].setIsEarlyClobber(true);
}
return;
}
}
@ -573,8 +578,12 @@ void MachineInstr::addOperand(const MachineOperand &Op) {
// Do explicitly set the reginfo for this operand though, to ensure the
// next/prev fields are properly nulled out.
if (Operands[OpNo].isReg())
if (Operands[OpNo].isReg()) {
Operands[OpNo].AddRegOperandToRegInfo(0);
// If the register operand is flagged as early, mark the operand as such
if (TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1)
Operands[OpNo].setIsEarlyClobber(true);
}
} else if (Operands.size()+1 <= Operands.capacity()) {
// Otherwise, we have to remove register operands from their register use
@ -594,8 +603,12 @@ void MachineInstr::addOperand(const MachineOperand &Op) {
Operands.insert(Operands.begin()+OpNo, Op);
Operands[OpNo].ParentMI = this;
if (Operands[OpNo].isReg())
if (Operands[OpNo].isReg()) {
Operands[OpNo].AddRegOperandToRegInfo(RegInfo);
// If the register operand is flagged as early, mark the operand as such
if (TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1)
Operands[OpNo].setIsEarlyClobber(true);
}
// Re-add all the implicit ops.
for (unsigned i = OpNo+1, e = Operands.size(); i != e; ++i) {
@ -613,6 +626,11 @@ void MachineInstr::addOperand(const MachineOperand &Op) {
// Re-add all the operands.
AddRegOperandsToUseLists(*RegInfo);
// If the register operand is flagged as early, mark the operand as such
if (Operands[OpNo].isReg()
&& TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1)
Operands[OpNo].setIsEarlyClobber(true);
}
}