/**
* Check if two calls are a send/recv pair.
*
* @param sendCall
* @param recvCall
*
* @return if they are send/recv pair
*/
bool MPICheckerAST::isSendRecvPair(const MPICall &sendCall,
const MPICall &recvCall) const {
if (!funcClassifier_.isSendType(sendCall)) return false;
if (!funcClassifier_.isRecvType(recvCall)) return false;
if (!areDatatypesEqual(sendCall, recvCall)) return false;
// compare count, tag
for (const size_t idx : {MPIPointToPoint::kCount, MPIPointToPoint::kTag}) {
if (!sendCall.arguments()[idx].isEqual(recvCall.arguments()[idx])) {
return false;
}
}
// compare ranks
const auto &rankArgSend = sendCall.arguments()[MPIPointToPoint::kRank];
const auto &rankArgRecv = recvCall.arguments()[MPIPointToPoint::kRank];
if (rankArgSend.typeSequence().size() != rankArgRecv.typeSequence().size())
return false;
// build sequences without last operator(skip first element)
std::vector<ArgumentVisitor::ComponentType> seq1, seq2;
std::vector<std::string> val1, val2;
bool containsSubtraction{false};
for (size_t i = 1; i < rankArgSend.typeSequence().size(); ++i) {
seq1.push_back(rankArgSend.typeSequence()[i]);
val1.push_back(rankArgSend.valueSequence()[i]);
seq2.push_back(rankArgRecv.typeSequence()[i]);
val2.push_back(rankArgRecv.valueSequence()[i]);
if (rankArgSend.valueSequence()[i] == "-") containsSubtraction = true;
if (rankArgRecv.valueSequence()[i] == "-") containsSubtraction = true;
}
if (containsSubtraction) {
// check ordered
if (seq1 != seq2 || val1 != val2) return false;
} else {
// check permutation
if ((!cont::isPermutation(seq1, seq2)) ||
(!cont::isPermutation(val1, val2))) {
return false;
}
}
// last (value|var|function) must be identical
if (val1.back() != val2.back()) return false;
// last operator must be inverse
if (!rankArgSend.isLastOperatorInverse(rankArgRecv)) return false;
return true;
}
/**
* Checks if mpi-datatypes for 2 different point to point calls are equal.
*
* @param sendCall
* @param recvCall
*
* @return equality
*/
bool MPICheckerAST::areDatatypesEqual(const MPICall &sendCall,
const MPICall &recvCall) const {
// compare mpi datatype
llvm::StringRef sendDataType = util::sourceRangeAsStringRef(
sendCall.arguments()[MPIPointToPoint::kDatatype]
.stmt_->getSourceRange(),
analysisManager_);
llvm::StringRef recvDataType = util::sourceRangeAsStringRef(
recvCall.arguments()[MPIPointToPoint::kDatatype]
.stmt_->getSourceRange(),
analysisManager_);
return sendDataType == recvDataType;
}
/**
* Checks if buffer type and specified mpi datatype matches.
*
* @param mpiCall call to check type correspondence for
*/
void MPICheckerAST::checkBufferTypeMatch(const MPICall &mpiCall) const {
// one pair consists of {bufferIdx, mpiDatatypeIdx}
IndexPairs indexPairs = bufferDataTypeIndices(mpiCall);
// for every buffer mpi-data pair in function
// check if their types match
for (const auto &idxPair : indexPairs) {
const VarDecl *bufferArg =
mpiCall.arguments()[idxPair.first].vars().front();
// collect buffer type information
const mpi::TypeVisitor typeVisitor{bufferArg->getType()};
// get mpi datatype as string
auto mpiDatatype = mpiCall.arguments()[idxPair.second].stmt_;
StringRef mpiDatatypeString{util::sourceRangeAsStringRef(
mpiDatatype->getSourceRange(), analysisManager_)};
selectTypeMatcher(typeVisitor, mpiCall, mpiDatatypeString, idxPair);
}
}
/**
* Check if invalid argument types are used in a mpi call.
* This check looks at indices where only integer values are valid.
* (count, rank, tag) Any non integer type usage is reported.
*
* @param mpiCall to check the arguments for
*/
void MPICheckerAST::checkForInvalidArgs(const MPICall &mpiCall) const {
std::vector<size_t> indicesToCheck = integerIndices(mpiCall);
if (!indicesToCheck.size()) return;
// iterate indices which should not have integer arguments
for (const size_t idx : indicesToCheck) {
// check for invalid variable types
const auto &arg = mpiCall.arguments()[idx];
const auto &vars = arg.vars();
for (const auto &var : vars) {
const mpi::TypeVisitor typeVisitor{var->getType()};
if (!typeVisitor.builtinType() ||
!typeVisitor.builtinType()->isIntegerType()) {
bugReporter_.reportInvalidArgumentType(
mpiCall.callExpr(), idx, var->getSourceRange(), "Variable");
}
}
// check for float literals
if (arg.floatingLiterals().size()) {
bugReporter_.reportInvalidArgumentType(
mpiCall.callExpr(), idx,
arg.floatingLiterals().front()->getSourceRange(), "Literal");
}
// check for invalid return types from functions
const auto &functions = arg.functions();
for (const auto &function : functions) {
const mpi::TypeVisitor typeVisitor{function->getReturnType()};
if (!typeVisitor.builtinType() ||
!typeVisitor.builtinType()->isIntegerType()) {
bugReporter_.reportInvalidArgumentType(
mpiCall.callExpr(), idx, function->getSourceRange(),
"Return value");
}
}
}
}
