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performance: cache result of looking up user

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llvm-svn: 100862
This commit is contained in:
Gabor Greif 2010-04-09 15:18:34 +00:00
parent a451b859f9
commit f63f840826
1 changed files with 6 additions and 4 deletions
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10
lib/Transforms/Utils/AddrModeMatcher.cpp
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@ -434,19 +434,21 @@ static bool FindAllMemoryUses(Instruction *I,
// Loop over all the uses, recursively processing them.
for (Value::use_iterator UI = I->use_begin(), E = I->use_end();
UI != E; ++UI) {
if (LoadInst *LI = dyn_cast<LoadInst>(*UI)) {
User *U = *UI;
if (LoadInst *LI = dyn_cast<LoadInst>(U)) {
MemoryUses.push_back(std::make_pair(LI, UI.getOperandNo()));
continue;
}
if (StoreInst *SI = dyn_cast<StoreInst>(*UI)) {
if (StoreInst *SI = dyn_cast<StoreInst>(U)) {
unsigned opNo = UI.getOperandNo();
if (opNo == 0) return true; // Storing addr, not into addr.
MemoryUses.push_back(std::make_pair(SI, opNo));
continue;
}
if (CallInst *CI = dyn_cast<CallInst>(*UI)) {
if (CallInst *CI = dyn_cast<CallInst>(U)) {
InlineAsm *IA = dyn_cast<InlineAsm>(CI->getCalledValue());
if (IA == 0) return true;
@ -456,7 +458,7 @@ static bool FindAllMemoryUses(Instruction *I,
continue;
}
if (FindAllMemoryUses(cast<Instruction>(*UI), MemoryUses, ConsideredInsts,
if (FindAllMemoryUses(cast<Instruction>(U), MemoryUses, ConsideredInsts,
TLI))
return true;
}