void *ExecutionEngine::LazyFunctionCreator( std::string const &functionName )
{
if ( functionName == "report" )
return (void *)&ExecutionEngine::Report;
else
{
void *result = 0;
if ( !result )
result = KL::LookupExternalSymbol( functionName );
if ( !result )
result = Plug::Manager::Instance()->llvmResolveExternalFunction( functionName );
#if defined(FABRIC_MODULE_OPENCL)
if ( !result )
result = OCL::llvmResolveExternalFunction( functionName );
#endif
if ( !result )
{
RC::ConstHandle<Context> context = s_currentContext;
result = context->getCGManager()->llvmResolveExternalFunction( functionName );
}
// We should *always* return a valid symbol. Otherwise something's
// wrong in the KL compiler/support.
if( !result )
throw Exception( "LLVM lookup failed for symbol: " + functionName );
return result;
}
}
ArrayOutputOperator::ArrayOutputOperator(
RC::ConstHandle<Executable> const &executable,
RC::ConstHandle<AST::Operator> const &astOperator,
void (*functionPtr)(...)
)
: m_executable( executable )
{
if ( astOperator )
{
RC::Handle<CG::Manager> cgManager = executable->getCGManager();
RC::ConstHandle<AST::ParamVector> params = astOperator->getParams( cgManager );
size_t numParams = params->size();
if ( numParams < 1 || numParams > 4 )
throw GetPrototypeException();
RC::ConstHandle<AST::Param> valueParam = params->get(0);
if ( valueParam->getUsage() != CG::USAGE_LVALUE )
throw GetPrototypeException();
RC::ConstHandle<RT::Desc> valueDesc = valueParam->getAdapter( cgManager )->getDesc();
RC::ConstHandle<RT::Desc> sharedDesc;
if ( numParams >= 2 )
{
RC::ConstHandle<AST::Param> indexParam = params->get(1);
if ( indexParam->getUsage() != CG::USAGE_RVALUE
|| !indexParam->getAdapter( cgManager )->isEquivalentTo( cgManager->getSizeAdapter() )
)
throw GetPrototypeException();
if ( numParams >= 3 )
{
RC::ConstHandle<AST::Param> countParam = params->get(2);
if ( countParam->getUsage() != CG::USAGE_RVALUE
|| !countParam->getAdapter( cgManager )->isEquivalentTo( cgManager->getSizeAdapter() )
)
throw GetPrototypeException();
if ( numParams >= 4 )
{
RC::ConstHandle<AST::Param> sharedParam = params->get(3);
if ( sharedParam->getUsage() != CG::USAGE_RVALUE )
throw GetPrototypeException();
sharedDesc = sharedParam->getAdapter( cgManager )->getDesc();
}
}
}
init( functionPtr, numParams, valueDesc, sharedDesc );
}
}
ExecutionEngine::ExecutionEngine( RC::ConstHandle<Context> const &context, RC::Handle<CG::Context> const &cgContext, llvm::Module *llvmModule )
: m_contextWeakRef( context )
, m_cgContext( cgContext )
{
std::string errStr;
m_llvmExecutionEngine.reset(
llvm::EngineBuilder(llvmModule)
.setErrorStr(&errStr)
.setEngineKind(llvm::EngineKind::JIT)
.create()
);
if ( !m_llvmExecutionEngine )
throw Exception( "Failed to construct ExecutionEngine: " + errStr );
m_llvmExecutionEngine->InstallLazyFunctionCreator( &LazyFunctionCreator );
// Make sure we don't search loaded libraries for missing symbols.
// Only symbols *we* provide should be available as calling functions.
m_llvmExecutionEngine->DisableSymbolSearching();
context->getCGManager()->llvmAddGlobalMappingsToExecutionEngine( m_llvmExecutionEngine.get(), *llvmModule );
}
