const AccessSummaryAnalysis::FunctionSummary &
AccessSummaryAnalysis::getOrCreateSummary(SILFunction *fn) {
FunctionInfo *info = getFunctionInfo(fn);
if (!info->isValid())
recompute(info);
return info->getSummary();
}
bool AccessSummaryAnalysis::propagateFromCalleeToCaller(
FunctionInfo *callerInfo, ArgumentFlow flow) {
// For a given flow from a caller's argument to a callee's argument,
// propagate the argument summary information to the caller.
FunctionInfo *calleeInfo = flow.CalleeFunctionInfo;
const auto &calleeArgument =
calleeInfo->getSummary().getAccessForArgument(flow.CalleeArgumentIndex);
auto &callerArgument =
callerInfo->getSummary().getAccessForArgument(flow.CallerArgumentIndex);
bool changed = callerArgument.mergeWith(calleeArgument);
return changed;
}
