/**
* Select apprioriate function to match the buffer type against
* the specified mpi datatype.
*
* @param typeVisitor contains information about the buffer
* @param mpiCall call whose arguments are observed
* @param mpiDatatypeString
* @param idxPair bufferIdx, mpiDatatypeIdx
*/
void MPICheckerAST::selectTypeMatcher(
const mpi::TypeVisitor &typeVisitor, const MPICall &mpiCall,
const StringRef mpiDatatypeString,
const std::pair<size_t, size_t> &idxPair) const {
const clang::BuiltinType *builtinType = typeVisitor.builtinType();
bool isTypeMatching{true};
// check for exact width types (e.g. int16_t, uint32_t)
if (typeVisitor.isTypedefType()) {
isTypeMatching = matchExactWidthType(typeVisitor, mpiDatatypeString);
}
// check for complex-floating types (e.g. float _Complex)
else if (typeVisitor.isComplexType()) {
isTypeMatching = matchComplexType(typeVisitor, mpiDatatypeString);
}
// check for basic builtin types (e.g. int, char)
else if (!builtinType) {
return; // if no builtin type cancel checking
} else if (builtinType->isBooleanType()) {
isTypeMatching = matchBoolType(typeVisitor, mpiDatatypeString);
} else if (builtinType->isAnyCharacterType()) {
isTypeMatching = matchCharType(typeVisitor, mpiDatatypeString);
} else if (builtinType->isSignedInteger()) {
isTypeMatching = matchSignedType(typeVisitor, mpiDatatypeString);
} else if (builtinType->isUnsignedIntegerType()) {
isTypeMatching = matchUnsignedType(typeVisitor, mpiDatatypeString);
} else if (builtinType->isFloatingType()) {
isTypeMatching = matchFloatType(typeVisitor, mpiDatatypeString);
}
if (!isTypeMatching)
bugReporter_.reportTypeMismatch(mpiCall.callExpr(), idxPair,
typeVisitor.qualType_,
mpiDatatypeString);
}
/**
* Returns index pairs for each buffer, datatype pair.
*
* @param mpiCall
*
* @return index pairs
*/
MPICheckerAST::IndexPairs MPICheckerAST::bufferDataTypeIndices(
const MPICall &mpiCall) const {
IndexPairs indexPairs;
if (funcClassifier_.isPointToPointType(mpiCall)) {
indexPairs.push_back(
{MPIPointToPoint::kBuf, MPIPointToPoint::kDatatype});
} else if (funcClassifier_.isCollectiveType(mpiCall)) {
if (funcClassifier_.isReduceType(mpiCall)) {
// only check buffer type if not inplace
if (util::sourceRangeAsStringRef(
mpiCall.callExpr()->getArg(0)->getSourceRange(),
analysisManager_) != "MPI_IN_PLACE") {
indexPairs.push_back({0, 3});
}
indexPairs.push_back({1, 3});
} else if (funcClassifier_.isScatterType(mpiCall) ||
funcClassifier_.isGatherType(mpiCall) ||
funcClassifier_.isAlltoallType(mpiCall)) {
indexPairs.push_back({0, 2});
indexPairs.push_back({3, 5});
} else if (funcClassifier_.isBcastType(mpiCall)) {
indexPairs.push_back({0, 2});
}
}
return indexPairs;
}
/**
* 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.callExpr()
->getArg(MPIPointToPoint::kDatatype)
->getSourceRange(),
analysisManager_);
llvm::StringRef recvDataType =
util::sourceRangeAsStringRef(recvCall.callExpr()
->getArg(MPIPointToPoint::kDatatype)
->getSourceRange(),
analysisManager_);
return sendDataType == recvDataType;
}
/**
* 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");
}
}
}
}
/**
* Check if there is a redundant call to the call passed.
*
* @param callToCheck
*/
void MPICheckerAST::checkForRedundantCall(const MPICall &callToCheck,
const MPIRankCase &rankCase) const {
for (const MPICall &comparedCall : rankCase.mpiCalls()) {
if (qualifyRedundancyCheck(callToCheck, comparedCall)) {
if (callToCheck == comparedCall) {
bugReporter_.reportRedundantCall(callToCheck.callExpr(),
comparedCall.callExpr());
callToCheck.isMarked_ = true;
callToCheck.isMarked_ = true;
}
}
}
return;
}
