/// Run the optimization.
bool run() {
bool Changed = false;
// Run OwnedToGuaranteed optimization.
if (OwnedToGuaranteedAnalyze()) {
Changed = true;
OwnedToGuaranteedTransform();
}
// Run DeadArgument elimination transformation. We only specialize
// if this function has a caller inside the current module or we have
// already created a thunk.
if ((hasCaller || Changed) && DeadArgumentAnalyzeParameters()) {
Changed = true;
DeadArgumentTransformFunction();
}
// Run ArgumentExplosion transformation. We only specialize
// if this function has a caller inside the current module or we have
// already created a thunk.
//
// NOTE: we run argument explosion last because we've already initialized
// the ArgumentDescList to have unexploded number of arguments. Exploding
// it without changing the argument count is not going to help with
// owned-to-guaranteed transformation.
//
// In order to not miss any opportunity, we send the optimized function
// to the passmanager to optimize any opportunities exposed by argument
// explosion.
if ((hasCaller || Changed) && ArgumentExplosionAnalyzeParameters()) {
Changed = true;
}
// Create the specialized function and invalidate the old function.
if (Changed) {
createFunctionSignatureOptimizedFunction();
PM->invalidateAnalysis(F, SILAnalysis::InvalidationKind::Everything);
}
return Changed;
}
