ImmediateAnalyzer.cc

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/*
 Copyright (c) 2002-2016 Tampere University.
 
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/*
 * @file ImmediateAnalyzer.cc
 *
 * Implementation of ImmediateAnalyzer class.
 *
 * Created on: 8.3.2016
 * @author Henry Linjamäki 2016 (henry.linjamaki-no.spam-tut.fi)
 * @note rating: red
 */
 
#include "ImmediateAnalyzer.hh"
 
#include <memory>
#include <utility>
#include <set>
 
#include "ImmInfo.hh"
 
#include "Machine.hh"
#include "FunctionUnit.hh"
#include "ControlUnit.hh"
#include "HWOperation.hh"
#include "MachineConnectivityCheck.hh"
#include "FUPort.hh"
 
#include "TCEString.hh"
 
using namespace TTAMachine;
 
 
/**
 * Collects short immediate capabilities of the machine.
 *
 * @param mach The machine.
 */
ImmInfo*
ImmediateAnalyzer::analyze(const TTAMachine::Machine& mach) {
    std::unique_ptr<ImmInfo> result(new ImmInfo);
 
    for (const FunctionUnit* fu : mach.functionUnitNavigator()) {
        analyzeImmediateCapabilitiesForFU(*fu, *result);
    }
 
    analyzeImmediateCapabilitiesForFU(*mach.controlUnit(), *result);
    // ^ todo: fix this. operations of CU are not getting included in analysis.
 
    //todo: remove duplicates (entries with identical (key, value pairs)).
 
 
    return result.release();
}
 
 
/**
 * Collects short immediate capabilities for each operation in the FU.
 *
 * @param fu The function unit.
 * @param result The short immediate analysis result object where the
 *               capabilities are inserted into.
 */
void
ImmediateAnalyzer::analyzeImmediateCapabilitiesForFU(
    const TTAMachine::FunctionUnit& fu, ImmInfo& result) {
 
    for (int i = 0; i < fu.operationCount(); i++) {
        HWOperation& hwop = *fu.operation(i);
        analyzeImmediateCapabilitiesForOperation(hwop, result);
    }
}
 
 
/**
 * Collects immediate transport capabilities for the operation.
 *
 * @param hwop The operation.
 * @param result The short immediate analysis result object where the
 *               capabilities are inserted into.
 */
void
ImmediateAnalyzer::analyzeImmediateCapabilitiesForOperation(
    const TTAMachine::HWOperation& hwop, ImmInfo& result) {
 
    using std::make_pair;
 
    for (int i = 0; i < hwop.operandCount(); i++) {
        assert(hwop.port(i+1) != nullptr);
        const FUPort& boundPort = *hwop.port(i+1);
    const Machine& mach = *boundPort.parentUnit()->machine();
        std::set<const TTAMachine::Bus*> connectedBuses =
            MachineConnectivityCheck::connectedSourceBuses(boundPort);
        for (const Bus* bus : connectedBuses) {
            if (bus->immediateWidth() < 1) {
                continue;
            }
            result.insert(
                make_pair(
                    make_pair(TCEString::toUpper(hwop.name()), i+1),
                    ImmInfoValue(bus->immediateWidth(), bus->signExtends())));
        }
 
        for (const ImmediateUnit* iu : mach.immediateUnitNavigator()) {
            if (MachineConnectivityCheck::isConnected(*iu, boundPort)) {
                for (auto& it : mach.instructionTemplateNavigator()) {
                    int supportedWidth = it->supportedWidth(*iu);
                    if (supportedWidth < 1) {
                        continue;
                    }
 
                    result.insert(
                        make_pair(
                            make_pair(TCEString::toUpper(hwop.name()), i+1),
                            ImmInfoValue(supportedWidth, iu->signExtends())));
                }
            }
        }
    }
}