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The lastOp operand is never used

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llvm-svn: 9331
This commit is contained in:
Chris Lattner 2003-10-21 16:06:07 +00:00
parent 57cbb53968
commit 4b8ce1c80d
1 changed files with 11 additions and 20 deletions
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31
lib/Target/Sparc/PreSelection.cpp
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@ -81,7 +81,7 @@ namespace {
//
// visitOneOperand() does all the work for one operand.
//
void visitOperands(Instruction &I, int firstOp=0, int lastOp=0);
void visitOperands(Instruction &I, int firstOp=0);
void visitOneOperand(Instruction &I, Value* Op, unsigned opNum,
Instruction& insertBefore);
};
@ -208,30 +208,21 @@ PreSelection::visitOneOperand(Instruction &I, Value* Op, unsigned opNum,
// firstOp and lastOp can be used to skip leading and trailing operands.
// If lastOp is 0, it defaults to #operands or #incoming Phi values.
//
inline void
PreSelection::visitOperands(Instruction &I, int firstOp, int lastOp)
{
inline void PreSelection::visitOperands(Instruction &I, int firstOp) {
// For any instruction other than PHI, copies go just before the instr.
// For a PHI, operand copies must be before the terminator of the
// appropriate predecessor basic block. Remaining logic is simple
// so just handle PHIs and other instructions separately.
//
if (PHINode* phi = dyn_cast<PHINode>(&I))
{
if (lastOp == 0)
lastOp = phi->getNumIncomingValues();
for (unsigned i=firstOp, N=lastOp; i < N; ++i)
this->visitOneOperand(I, phi->getIncomingValue(i),
phi->getOperandNumForIncomingValue(i),
* phi->getIncomingBlock(i)->getTerminator());
}
else
{
if (lastOp == 0)
lastOp = I.getNumOperands();
for (unsigned i=firstOp, N=lastOp; i < N; ++i)
this->visitOneOperand(I, I.getOperand(i), i, I);
}
if (PHINode* phi = dyn_cast<PHINode>(&I)) {
for (unsigned i=firstOp, N=phi->getNumIncomingValues(); i != N; ++i)
visitOneOperand(I, phi->getIncomingValue(i),
phi->getOperandNumForIncomingValue(i),
* phi->getIncomingBlock(i)->getTerminator());
} else {
for (unsigned i=firstOp, N=lastOp; i != I.getNumOperands(); ++i)
visitOneOperand(I, I.getOperand(i), i, I);
}
}