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cache result of operator* 

llvm-svn: 107976
This commit is contained in:
Gabor Greif 2010-07-09 15:40:10 +00:00
parent 6d8870fc35
commit e82532a1c5
2 changed files with 10 additions and 7 deletions
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12
llvm/lib/Analysis/ScalarEvolutionExpander.cpp
View File

@ -1118,17 +1118,19 @@ Value *SCEVExpander::visitAddRecExpr(const SCEVAddRecExpr *S) {
Constant *One = ConstantInt::get(Ty, 1);
for (pred_iterator HPI = pred_begin(Header), HPE = pred_end(Header);
HPI != HPE; ++HPI)
if (L->contains(*HPI)) {
HPI != HPE; ++HPI) {
BasicBlock *HP = *HPI;
if (L->contains(HP)) {
// Insert a unit add instruction right before the terminator
// corresponding to the back-edge.
Instruction *Add = BinaryOperator::CreateAdd(PN, One, "indvar.next",
(*HPI)->getTerminator());
HP->getTerminator());
rememberInstruction(Add);
PN->addIncoming(Add, *HPI);
PN->addIncoming(Add, HP);
} else {
PN->addIncoming(Constant::getNullValue(Ty), *HPI);
PN->addIncoming(Constant::getNullValue(Ty), HP);
}
}
}
// {0,+,F} --> {0,+,1} * F

5
llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
View File

@ -771,8 +771,9 @@ void IndVarSimplify::SinkUnusedInvariants(Loop *L) {
bool UsedInLoop = false;
for (Value::use_iterator UI = I->use_begin(), UE = I->use_end();
UI != UE; ++UI) {
BasicBlock *UseBB = cast<Instruction>(UI)->getParent();
if (PHINode *P = dyn_cast<PHINode>(UI)) {
User *U = *UI;
BasicBlock *UseBB = cast<Instruction>(U)->getParent();
if (PHINode *P = dyn_cast<PHINode>(U)) {
unsigned i =
PHINode::getIncomingValueNumForOperand(UI.getOperandNo());
UseBB = P->getIncomingBlock(i);