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cache result of operator*

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llvm-svn: 107988
This commit is contained in:
Gabor Greif 2010-07-09 16:39:02 +00:00
parent 9e8c9204ef
commit a2c75f904d
1 changed files with 5 additions and 3 deletions
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8
lib/Analysis/ScalarEvolutionExpander.cpp
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@ -30,9 +30,10 @@ Value *SCEVExpander::ReuseOrCreateCast(Value *V, const Type *Ty,
BasicBlock::iterator IP) { BasicBlock::iterator IP) {
// Check to see if there is already a cast! // Check to see if there is already a cast!
for (Value::use_iterator UI = V->use_begin(), E = V->use_end(); for (Value::use_iterator UI = V->use_begin(), E = V->use_end();
UI != E; ++UI) UI != E; ++UI) {
if ((*UI)->getType() == Ty) User *U = *UI;
if (CastInst *CI = dyn_cast<CastInst>(cast<Instruction>(*UI))) if (U->getType() == Ty)
if (CastInst *CI = dyn_cast<CastInst>(cast<Instruction>(U)))
if (CI->getOpcode() == Op) { if (CI->getOpcode() == Op) {
// If the cast isn't where we want it, fix it. // If the cast isn't where we want it, fix it.
if (BasicBlock::iterator(CI) != IP) { if (BasicBlock::iterator(CI) != IP) {
@ -49,6 +50,7 @@ Value *SCEVExpander::ReuseOrCreateCast(Value *V, const Type *Ty,
rememberInstruction(CI); rememberInstruction(CI);
return CI; return CI;
} }
}
// Create a new cast. // Create a new cast.
Instruction *I = CastInst::Create(Op, V, Ty, V->getName(), IP); Instruction *I = CastInst::Create(Op, V, Ty, V->getName(), IP);