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Remove an iteration pass over the entire scalarmap for each function created

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by not allowing integer constants to get into the scalar map in the first
place.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20764 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-03-22 02:45:13 +00:00
parent 9308a35532
commit a513fb127f
1 changed files with 8 additions and 15 deletions
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23
lib/Analysis/DataStructure/Local.cpp
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@ -82,7 +82,8 @@ namespace {
FunctionCalls(&fc) {
// Create scalar nodes for all pointer arguments...
for (Function::arg_iterator I = f.arg_begin(), E = f.arg_end(); I != E; ++I)
for (Function::arg_iterator I = f.arg_begin(), E = f.arg_end();
I != E; ++I)
if (isPointerType(I->getType()))
getValueDest(*I);
@ -177,13 +178,6 @@ DSGraph::DSGraph(EquivalenceClasses<GlobalValue*> &ECs, const TargetData &td,
Timer::addPeakMemoryMeasurement();
#endif
// Remove all integral constants from the scalarmap!
for (DSScalarMap::iterator I = ScalarMap.begin(); I != ScalarMap.end();)
if (isa<ConstantIntegral>(I->first))
ScalarMap.erase(I++);
else
++I;
// If there are any constant globals referenced in this function, merge their
// initializers into the local graph from the globals graph.
if (ScalarMap.global_begin() != ScalarMap.global_end()) {
@ -228,9 +222,12 @@ DSNodeHandle GraphBuilder::getValueDest(Value &Val) {
N->addGlobal(GV);
} else if (Constant *C = dyn_cast<Constant>(V)) {
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
if (CE->getOpcode() == Instruction::Cast)
NH = getValueDest(*CE->getOperand(0));
else if (CE->getOpcode() == Instruction::GetElementPtr) {
if (CE->getOpcode() == Instruction::Cast) {
if (isa<PointerType>(CE->getOperand(0)->getType()))
NH = getValueDest(*CE->getOperand(0));
else
NH = createNode()->setUnknownNodeMarker();
} else if (CE->getOpcode() == Instruction::GetElementPtr) {
visitGetElementPtrInst(*CE);
DSScalarMap::iterator I = ScalarMap.find(CE);
assert(I != ScalarMap.end() && "GEP didn't get processed right?");
@ -244,10 +241,6 @@ DSNodeHandle GraphBuilder::getValueDest(Value &Val) {
return 0;
}
return NH;
} else if (ConstantIntegral *CI = dyn_cast<ConstantIntegral>(C)) {
// Random constants are unknown mem
return NH = createNode()->setUnknownNodeMarker();
} else if (isa<UndefValue>(C)) {
ScalarMap.erase(V);
return 0;