/// Add a CodeGen pass at this point in the pipeline after checking for target
/// and command line overrides.
///
/// addPass cannot return a pointer to the pass instance because is internal the
/// PassManager and the instance we create here may already be freed.
AnalysisID TargetPassConfig::addPass(AnalysisID PassID) {
IdentifyingPassPtr TargetID = getPassSubstitution(PassID);
IdentifyingPassPtr FinalPtr = overridePass(PassID, TargetID);
if (!FinalPtr.isValid())
return nullptr;
Pass *P;
if (FinalPtr.isInstance())
P = FinalPtr.getInstance();
else {
P = Pass::createPass(FinalPtr.getID());
if (!P)
llvm_unreachable("Pass ID not registered");
}
AnalysisID FinalID = P->getPassID();
addPass(P); // Ends the lifetime of P.
// Add the passes after the pass P if there is any.
for (SmallVectorImpl<std::pair<AnalysisID, IdentifyingPassPtr> >::iterator
I = Impl->InsertedPasses.begin(), E = Impl->InsertedPasses.end();
I != E; ++I) {
if ((*I).first == PassID) {
assert((*I).second.isValid() && "Illegal Pass ID!");
Pass *NP;
if ((*I).second.isInstance())
NP = (*I).second.getInstance();
else {
NP = Pass::createPass((*I).second.getID());
assert(NP && "Pass ID not registered");
}
addPass(NP);
}
}
return FinalID;
}
/// Insert InsertedPassID pass after TargetPassID.
void TargetPassConfig::insertPass(AnalysisID TargetPassID,
IdentifyingPassPtr InsertedPassID) {
assert(((!InsertedPassID.isInstance() &&
TargetPassID != InsertedPassID.getID()) ||
(InsertedPassID.isInstance() &&
TargetPassID != InsertedPassID.getInstance()->getPassID())) &&
"Insert a pass after itself!");
std::pair<AnalysisID, IdentifyingPassPtr> P(TargetPassID, InsertedPassID);
Impl->InsertedPasses.push_back(P);
}
/// Insert InsertedPassID pass after TargetPassID.
void TargetPassConfig::insertPass(AnalysisID TargetPassID,
IdentifyingPassPtr InsertedPassID,
bool VerifyAfter, bool PrintAfter) {
assert(((!InsertedPassID.isInstance() &&
TargetPassID != InsertedPassID.getID()) ||
(InsertedPassID.isInstance() &&
TargetPassID != InsertedPassID.getInstance()->getPassID())) &&
"Insert a pass after itself!");
Impl->InsertedPasses.emplace_back(TargetPassID, InsertedPassID, VerifyAfter,
PrintAfter);
}
/// Add a CodeGen pass at this point in the pipeline after checking for target
/// and command line overrides.
///
/// addPass cannot return a pointer to the pass instance because is internal the
/// PassManager and the instance we create here may already be freed.
AnalysisID TargetPassConfig::addPass(AnalysisID PassID, bool verifyAfter,
bool printAfter) {
IdentifyingPassPtr TargetID = getPassSubstitution(PassID);
IdentifyingPassPtr FinalPtr = overridePass(PassID, TargetID);
if (!FinalPtr.isValid())
return nullptr;
Pass *P;
if (FinalPtr.isInstance())
P = FinalPtr.getInstance();
else {
P = Pass::createPass(FinalPtr.getID());
if (!P)
llvm_unreachable("Pass ID not registered");
}
AnalysisID FinalID = P->getPassID();
addPass(P, verifyAfter, printAfter); // Ends the lifetime of P.
return FinalID;
}
/// Allow Pass selection to be overriden by command line options. This supports
/// flags with ternary conditions. TargetID is passed through by default. The
/// pass is suppressed when the option is false. When the option is true, the
/// StandardID is selected if the target provides no default.
static IdentifyingPassPtr applyOverride(IdentifyingPassPtr TargetID,
cl::boolOrDefault Override,
AnalysisID StandardID) {
switch (Override) {
case cl::BOU_UNSET:
return TargetID;
case cl::BOU_TRUE:
if (TargetID.isValid())
return TargetID;
if (StandardID == nullptr)
report_fatal_error("Target cannot enable pass");
return StandardID;
case cl::BOU_FALSE:
return IdentifyingPassPtr();
}
llvm_unreachable("Invalid command line option state");
}
bool TargetPassConfig::isPassSubstitutedOrOverridden(AnalysisID ID) const {
IdentifyingPassPtr TargetID = getPassSubstitution(ID);
IdentifyingPassPtr FinalPtr = overridePass(ID, TargetID);
return !FinalPtr.isValid() || FinalPtr.isInstance() ||
FinalPtr.getID() != ID;
}
