Examples with SpecializationGroup com.oracle.truffle.dsl.processor.parser.SpecializationGroup used on opensource projects

Example 1 with SpecializationGroup

use of com.oracle.truffle.dsl.processor.parser.SpecializationGroup in project graal by oracle.

the class FlatNodeGenFactory method createExecute.

private CodeExecutableElement createExecute(CodeTypeElement clazz, ExecutableTypeData type, List<ExecutableTypeData> delegateableTypes) {
    final List<SpecializationData> allSpecializations = reachableSpecializations;
    final List<SpecializationData> compatibleSpecializations = filterCompatibleSpecializations(type, allSpecializations);
    List<SpecializationData> implementedSpecializations;
    if (delegateableTypes.isEmpty()) {
        implementedSpecializations = compatibleSpecializations;
    } else {
        implementedSpecializations = filterImplementedSpecializations(type, compatibleSpecializations);
    }
    FrameState frameState = FrameState.load(this, type, Integer.MAX_VALUE);
    CodeExecutableElement method = createExecuteMethod(null, type, frameState, true);
    clazz.add(method);
    CodeTreeBuilder builder = method.createBuilder();
    // do I miss specializations that are reachable from this executable?
    if (compatibleSpecializations.size() != implementedSpecializations.size()) {
        ExecuteDelegationResult delegation = createExecuteDelegation(builder, frameState, type, delegateableTypes, compatibleSpecializations, implementedSpecializations);
        builder.tree(delegation.tree);
        if (!delegation.hasFallthrough) {
            return method;
        }
    }
    if (implementedSpecializations.isEmpty()) {
        implementedSpecializations = compatibleSpecializations;
    }
    if (implementedSpecializations.isEmpty()) {
        builder.tree(createTransferToInterpreterAndInvalidate());
        builder.startThrow().startNew(getType(AssertionError.class)).doubleQuote("Delegation failed.").end().end();
    } else {
        SpecializationGroup group = SpecializationGroup.create(implementedSpecializations);
        builder.tree(createFastPath(builder, implementedSpecializations, group, type, frameState));
    }
    return method;
}

Example 2 with SpecializationGroup

use of com.oracle.truffle.dsl.processor.parser.SpecializationGroup in project graal by oracle.

the class FlatNodeGenFactory method visitSpecializationGroup.

private CodeTree visitSpecializationGroup(CodeTreeBuilder parent, SpecializationGroup group, ExecutableTypeData forType, FrameState frameState, List<SpecializationData> allowedSpecializations, NodeExecutionMode mode) {
    CodeTreeBuilder builder = parent.create();
    boolean hasFallthrough = false;
    boolean hasImplicitCast = false;
    List<IfTriple> cachedTriples = new ArrayList<>();
    for (TypeGuard guard : group.getTypeGuards()) {
        IfTriple triple = createTypeCheckOrCast(frameState, group, guard, mode, false, true);
        if (triple != null) {
            cachedTriples.add(triple);
        }
        hasImplicitCast = hasImplicitCast || node.getTypeSystem().hasImplicitSourceTypes(guard.getType());
        if (!mode.isGuardFallback()) {
            triple = createTypeCheckOrCast(frameState, group, guard, mode, true, true);
            if (triple != null) {
                cachedTriples.add(triple);
            }
        }
    }
    SpecializationData specialization = group.getSpecialization();
    SpecializationData[] specializations = group.collectSpecializations().toArray(new SpecializationData[0]);
    List<GuardExpression> guardExpressions = new ArrayList<>(group.getGuards());
    // out of the loop.
    if (specialization != null && specialization.hasMultipleInstances()) {
        List<GuardExpression> unboundGuards = new ArrayList<>();
        for (GuardExpression guard : guardExpressions) {
            if (!specialization.isGuardBoundWithCache(guard)) {
                unboundGuards.add(guard);
            } else {
                // we need to stop as we need to ensure guard execution order
                break;
            }
        }
        cachedTriples.addAll(createMethodGuardCheck(frameState, group, unboundGuards, mode));
        guardExpressions.removeAll(unboundGuards);
    }
    boolean useSpecializationClass = specialization != null && useSpecializationClass(specialization);
    if (mode.isFastPath()) {
        int ifCount = 0;
        final boolean stateGuaranteed = group.isLast() && allowedSpecializations != null && allowedSpecializations.size() == 1 && group.getAllSpecializations().size() == allowedSpecializations.size();
        if ((!group.isEmpty() || specialization != null)) {
            CodeTree stateCheck = state.createContains(frameState, specializations);
            CodeTree stateGuard = null;
            CodeTree assertCheck = null;
            if (stateGuaranteed) {
                assertCheck = CodeTreeBuilder.createBuilder().startAssert().tree(stateCheck).end().build();
            } else {
                stateGuard = stateCheck;
            }
            cachedTriples.add(0, new IfTriple(null, stateGuard, assertCheck));
        }
        ifCount += IfTriple.materialize(builder, IfTriple.optimize(cachedTriples), false);
        // reset current triples
        cachedTriples = new ArrayList<>();
        String specializationLocalName = null;
        if (useSpecializationClass) {
            specializationLocalName = createSpecializationLocalName(specialization);
            builder.tree(loadSpecializationClass(frameState, specialization));
            if (specialization.getMaximumNumberOfInstances() > 1) {
                builder.startWhile();
            } else {
                builder.startIf();
            }
            builder.string(specializationLocalName, " != null");
            builder.end();
            builder.startBlock();
            ifCount++;
        }
        if (specialization != null) {
            if (!specialization.getAssumptionExpressions().isEmpty()) {
                builder.tree(createFastPathAssumptionCheck(builder, specialization, forType, frameState));
            }
        }
        cachedTriples = createMethodGuardCheck(frameState, group, guardExpressions, mode);
        int innerIfCount = IfTriple.materialize(builder, IfTriple.optimize(cachedTriples), false);
        SpecializationGroup prev = null;
        for (SpecializationGroup child : group.getChildren()) {
            if (prev != null && !prev.hasFallthrough()) {
                break;
            }
            builder.tree(visitSpecializationGroup(builder, child, forType, frameState.copy(), allowedSpecializations, mode));
        }
        if (specialization != null && (prev == null || prev.hasFallthrough())) {
            builder.tree(createFastPathExecute(builder, forType, specialization, frameState));
        }
        builder.end(innerIfCount);
        hasFallthrough |= innerIfCount > 0;
        if (useSpecializationClass && specialization.getMaximumNumberOfInstances() > 1) {
            String name = createSpecializationLocalName(specialization);
            builder.startStatement().string(name, " = ", name, ".next_").end();
        }
        builder.end(ifCount);
        hasFallthrough |= ifCount > 0;
    } else if (mode.isSlowPath()) {
        if (specialization != null && mayBeExcluded(specialization)) {
            CodeTree excludeCheck = exclude.createNotContains(frameState, specializations);
            cachedTriples.add(0, new IfTriple(null, excludeCheck, null));
        }
        int outerIfCount = 0;
        if (specialization == null) {
            cachedTriples.addAll(createMethodGuardCheck(frameState, group, guardExpressions, mode));
            outerIfCount += IfTriple.materialize(builder, IfTriple.optimize(cachedTriples), false);
            SpecializationGroup prev = null;
            for (SpecializationGroup child : group.getChildren()) {
                if (prev != null && !prev.hasFallthrough()) {
                    break;
                }
                builder.tree(visitSpecializationGroup(builder, child, forType, frameState.copy(), allowedSpecializations, mode));
                prev = child;
            }
        } else {
            outerIfCount += IfTriple.materialize(builder, IfTriple.optimize(cachedTriples), false);
            String countName = specialization != null ? "count" + specialization.getIndex() + "_" : null;
            boolean needsDuplicationCheck = specialization.isGuardBindsCache() || specialization.hasMultipleInstances();
            boolean useDuplicateFlag = specialization.isGuardBindsCache() && !specialization.hasMultipleInstances();
            String duplicateFoundName = specialization.getId() + "_duplicateFound_";
            int innerIfCount = 0;
            String specializationLocalName = createSpecializationLocalName(specialization);
            if (needsDuplicationCheck) {
                builder.tree(createDuplicationCheck(builder, frameState, group, guardExpressions, useDuplicateFlag, countName, duplicateFoundName, specializationLocalName));
                builder.startIf();
                if (useDuplicateFlag) {
                    // we reuse the specialization class local name instead of a duplicate found
                    // name
                    builder.string("!", duplicateFoundName);
                } else {
                    builder.string(createSpecializationLocalName(specialization), " == null");
                }
                builder.end().startBlock();
                innerIfCount++;
            }
            List<IfTriple> innerTripples = createMethodGuardCheck(frameState, group, guardExpressions, mode);
            List<AssumptionExpression> assumptions = specialization.getAssumptionExpressions();
            if (!assumptions.isEmpty()) {
                for (AssumptionExpression assumption : assumptions) {
                    innerTripples.addAll(createAssumptionSlowPathTriples(frameState, group, assumption));
                }
            }
            if (specialization.hasMultipleInstances()) {
                DSLExpression limit = specialization.getLimitExpression();
                innerTripples.addAll(initializeCaches(frameState, group, specialization.getBoundCaches(limit), NodeExecutionMode.SLOW_PATH, true, false));
                CodeTree limitExpression = DSLExpressionGenerator.write(limit, null, castBoundTypes(bindExpressionValues(frameState, limit, specialization)));
                CodeTree limitCondition = CodeTreeBuilder.createBuilder().string(countName).string(" < ").tree(limitExpression).build();
                innerTripples.add(new IfTriple(null, limitCondition, null));
                // assert that specialization is not initialized
                // otherwise we have been inserting invalid instances
                assertSpecializationClassNotInitialized(frameState, specialization);
            } else if (needsDuplicationCheck) {
                innerTripples.add(new IfTriple(null, state.createNotContains(frameState, new Object[] { specialization }), null));
            }
            innerIfCount += IfTriple.materialize(builder, IfTriple.optimize(innerTripples), false);
            builder.tree(createSpecialize(builder, frameState, group, specialization));
            if (needsDuplicationCheck) {
                hasFallthrough = true;
                if (useDuplicateFlag) {
                    builder.startStatement().string(duplicateFoundName, " = true").end();
                }
                builder.end(innerIfCount);
                // need to ensure that we update the implicit cast specializations on duplicates
                CodeTree updateImplicitCast = createUpdateImplicitCastState(builder, frameState, specialization);
                if (updateImplicitCast != null) {
                    builder.startElseBlock();
                    builder.tree(createUpdateImplicitCastState(builder, frameState, specialization));
                    builder.tree(state.createSet(frameState, new Object[] { specialization }, true, true));
                    builder.end();
                }
                builder.startIf();
                if (useDuplicateFlag) {
                    builder.string(duplicateFoundName);
                } else {
                    builder.string(createSpecializationLocalName(specialization), " != null");
                }
                builder.end().startBlock();
                builder.tree(createExecute(builder, frameState, executeAndSpecializeType, specialization, mode));
                builder.end();
            } else {
                builder.tree(createExecute(builder, frameState, executeAndSpecializeType, specialization, mode));
                builder.end(innerIfCount);
                hasFallthrough |= innerIfCount > 0;
            }
        }
        builder.end(outerIfCount);
        hasFallthrough |= outerIfCount > 0;
    } else if (mode.isGuardFallback()) {
        int ifCount = 0;
        if (specialization != null && specialization.getMaximumNumberOfInstances() > 1) {
            throw new AssertionError("unsupported path. should be caught by parser..");
        }
        int innerIfCount = 0;
        cachedTriples.addAll(createMethodGuardCheck(frameState, group, guardExpressions, mode));
        cachedTriples.addAll(createAssumptionCheckTriples(frameState, specialization));
        cachedTriples = IfTriple.optimize(cachedTriples);
        if (specialization != null && !hasImplicitCast) {
            IfTriple singleCondition = null;
            if (cachedTriples.size() == 1) {
                singleCondition = cachedTriples.get(0);
            }
            if (singleCondition != null) {
                int index = cachedTriples.indexOf(singleCondition);
                CodeTree stateCheck = state.createNotContains(frameState, specializations);
                cachedTriples.set(index, new IfTriple(singleCondition.prepare, combineTrees(" && ", stateCheck, singleCondition.condition), singleCondition.statements));
                fallbackNeedsState = true;
            }
        }
        innerIfCount += IfTriple.materialize(builder, cachedTriples, false);
        SpecializationGroup prev = null;
        for (SpecializationGroup child : group.getChildren()) {
            if (prev != null && !prev.hasFallthrough()) {
                break;
            }
            builder.tree(visitSpecializationGroup(builder, child, forType, frameState.copy(), allowedSpecializations, mode));
            prev = child;
        }
        if (specialization != null) {
            builder.returnFalse();
        }
        builder.end(innerIfCount);
        builder.end(ifCount);
        hasFallthrough |= ifCount > 0 || innerIfCount > 0;
    } else {
        throw new AssertionError("unexpected path");
    }
    group.setFallthrough(hasFallthrough);
    return builder.build();
}

Example 3 with SpecializationGroup

use of com.oracle.truffle.dsl.processor.parser.SpecializationGroup in project graal by oracle.

the class FlatNodeGenFactory method createExecuteAndSpecialize.

private CodeExecutableElement createExecuteAndSpecialize() {
    if (!node.needsRewrites(context)) {
        return null;
    }
    final FrameState frameState = FrameState.load(this);
    String frame = null;
    if (needsFrameToExecute(reachableSpecializations)) {
        frame = FRAME_VALUE;
    }
    TypeMirror returnType = executeAndSpecializeType.getReturnType();
    CodeExecutableElement method = frameState.createMethod(modifiers(PRIVATE), returnType, "executeAndSpecialize", frame);
    final CodeTreeBuilder builder = method.createBuilder();
    builder.declaration(context.getType(Lock.class), "lock", "getLock()");
    builder.declaration(context.getType(boolean.class), "hasLock", "true");
    builder.statement("lock.lock()");
    builder.tree(state.createLoad(frameState));
    if (requiresExclude()) {
        builder.tree(exclude.createLoad(frameState));
    }
    if (shouldReportPolymorphism(node, reachableSpecializations)) {
        generateSaveOldPolymorphismState(builder, frameState);
    }
    builder.startTryBlock();
    FrameState originalFrameState = frameState.copy();
    SpecializationGroup group = createSpecializationGroups();
    CodeTree execution = visitSpecializationGroup(builder, group, executeAndSpecializeType, frameState, null, NodeExecutionMode.SLOW_PATH);
    builder.tree(execution);
    if (group.hasFallthrough()) {
        builder.tree(createTransferToInterpreterAndInvalidate());
        builder.tree(createThrowUnsupported(builder, originalFrameState));
    }
    builder.end().startFinallyBlock();
    if (shouldReportPolymorphism(node, reachableSpecializations)) {
        generateCheckNewPolymorphismState(builder);
    }
    builder.startIf().string("hasLock").end().startBlock();
    builder.statement("lock.unlock()");
    builder.end();
    builder.end();
    return method;
}

Example 4 with SpecializationGroup

use of com.oracle.truffle.dsl.processor.parser.SpecializationGroup in project graal by oracle.

the class FlatNodeGenFactory method createFallbackGuard.

private Element createFallbackGuard() {
    boolean frameUsed = false;
    FrameState frameState = FrameState.load(this);
    List<SpecializationData> specializations = new ArrayList<>(reachableSpecializations);
    for (ListIterator<SpecializationData> iterator = specializations.listIterator(); iterator.hasNext(); ) {
        SpecializationData specialization = iterator.next();
        if (specialization.isFallback()) {
            iterator.remove();
        } else if (!specialization.isReachesFallback()) {
            iterator.remove();
        } else {
            if (specialization.isFrameUsedByGuard()) {
                frameUsed = true;
            }
        }
    }
    SpecializationGroup group = SpecializationGroup.create(specializations);
    ExecutableTypeData executableType = node.findAnyGenericExecutableType(context, -1);
    if (!frameUsed) {
        frameState.removeValue(FRAME_VALUE);
    }
    fallbackNeedsState = false;
    fallbackNeedsFrame = frameUsed;
    state.createLoad(frameState);
    CodeExecutableElement method = frameState.createMethod(modifiers(PRIVATE), getType(boolean.class), METHOD_FALLBACK_GUARD, FRAME_VALUE, STATE_VALUE);
    CodeTree result = visitSpecializationGroup(CodeTreeBuilder.createBuilder(), group, executableType, frameState, null, NodeExecutionMode.FALLBACK_GUARD);
    if (!fallbackNeedsState) {
        VariableElement toRemove = null;
        for (VariableElement v : method.getParameters()) {
            if (v.getSimpleName().toString().equals(STATE_VALUE)) {
                toRemove = v;
                break;
            }
        }
        if (toRemove != null) {
            method.getParameters().remove(toRemove);
        }
    }
    final CodeTreeBuilder builder = method.createBuilder();
    for (SpecializationData implemented : specializations) {
        if (implemented.getMaximumNumberOfInstances() > 1) {
            method.getAnnotationMirrors().add(createExplodeLoop());
            break;
        }
    }
    builder.tree(result);
    builder.returnTrue();
    if (!accessesCachedState(specializations)) {
        method.getModifiers().add(STATIC);
    }
    return method;
}