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implement two helper methods 

llvm-svn: 22736
This commit is contained in:
Chris Lattner 2005-08-09 23:36:33 +00:00
parent 67017db5c6
commit b310ac4a86
1 changed files with 28 additions and 0 deletions
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28
llvm/lib/Analysis/ScalarEvolution.cpp
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@ -1095,6 +1095,20 @@ namespace {
/// expression and create a new one.
SCEVHandle getSCEV(Value *V);
/// hasSCEV - Return true if the SCEV for this value has already been
/// computed.
bool hasSCEV(Value *V) const {
return Scalars.count(V);
}
/// setSCEV - Insert the specified SCEV into the map of current SCEVs for
/// the specified value.
void setSCEV(Value *V, const SCEVHandle &H) {
bool isNew = Scalars.insert(std::make_pair(V, H)).second;
assert(isNew && "This entry already existed!");
}
/// getSCEVAtScope - Compute the value of the specified expression within
/// the indicated loop (which may be null to indicate in no loop). If the
/// expression cannot be evaluated, return UnknownValue itself.
@ -2327,6 +2341,20 @@ SCEVHandle ScalarEvolution::getSCEV(Value *V) const {
return ((ScalarEvolutionsImpl*)Impl)->getSCEV(V);
}
/// hasSCEV - Return true if the SCEV for this value has already been
/// computed.
bool ScalarEvolution::hasSCEV(Value *V) const {
((ScalarEvolutionsImpl*)Impl)->hasSCEV(V);
}
/// setSCEV - Insert the specified SCEV into the map of current SCEVs for
/// the specified value.
void ScalarEvolution::setSCEV(Value *V, const SCEVHandle &H) {
((ScalarEvolutionsImpl*)Impl)->setSCEV(V, H);
}
SCEVHandle ScalarEvolution::getIterationCount(const Loop *L) const {
return ((ScalarEvolutionsImpl*)Impl)->getIterationCount(L);
}