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Don't use MCInstrDesc flags for implicit operands.

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When a MachineInstr is constructed, its implicit operands are added
first, then the explicit operands are inserted before the implicits.

MCInstrDesc has oprand flags like early clobber and operand ties that
apply to the explicit operands.

Don't look at those flags when the implicit operands are first added in
the explicit operands's positions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162910 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-08-30 14:39:06 +00:00
parent 1dfe9b5264
commit e941df5e35
1 changed files with 16 additions and 11 deletions
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27
lib/CodeGen/MachineInstr.cpp
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@@ -721,19 +721,24 @@ void MachineInstr::addOperand(const MachineOperand &Op) {
// Add the new operand to RegInfo. // Add the new operand to RegInfo.
if (RegInfo) if (RegInfo)
RegInfo->addRegOperandToUseList(&Operands[OpNo]); RegInfo->addRegOperandToUseList(&Operands[OpNo]);
// Set the IsTied bit if MC indicates this use is tied to a def. // The MCID operand information isn't accurate until we start adding
if (Operands[OpNo].isUse()) { // explicit operands. The implicit operands are added first, then the
int DefIdx = MCID->getOperandConstraint(OpNo, MCOI::TIED_TO); // explicits are inserted before them.
if (DefIdx != -1) { if (!isImpReg) {
MachineOperand &DefMO = getOperand(DefIdx); // Set the IsTied bit if MC indicates this use is tied to a def.
assert(DefMO.isDef() && "Use tied to operand that isn't a def"); if (Operands[OpNo].isUse()) {
DefMO.IsTied = true; int DefIdx = MCID->getOperandConstraint(OpNo, MCOI::TIED_TO);
Operands[OpNo].IsTied = true; if (DefIdx != -1) {
MachineOperand &DefMO = getOperand(DefIdx);
assert(DefMO.isDef() && "Use tied to operand that isn't a def");
DefMO.IsTied = true;
Operands[OpNo].IsTied = true;
}
} }
// If the register operand is flagged as early, mark the operand as such.
if (MCID->getOperandConstraint(OpNo, MCOI::EARLY_CLOBBER) != -1)
Operands[OpNo].setIsEarlyClobber(true);
} }
// If the register operand is flagged as early, mark the operand as such.
if (MCID->getOperandConstraint(OpNo, MCOI::EARLY_CLOBBER) != -1)
Operands[OpNo].setIsEarlyClobber(true);
} }
// Re-add all the implicit ops. // Re-add all the implicit ops.