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

Example 1 with TypeGuard

use of com.oracle.truffle.dsl.processor.parser.SpecializationGroup.TypeGuard 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 2 with TypeGuard

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

the class FlatNodeGenFactory method createUpdateImplicitCastState.

private CodeTree createUpdateImplicitCastState(CodeTreeBuilder parent, FrameState frameState, SpecializationData specialization) {
    CodeTreeBuilder builder = null;
    int signatureIndex = 0;
    for (Parameter p : specialization.getSignatureParameters()) {
        TypeMirror targetType = p.getType();
        TypeMirror polymorphicType = node.getPolymorphicSpecialization().findParameterOrDie(p.getSpecification().getExecution()).getType();
        if (typeSystem.hasImplicitSourceTypes(targetType) && needsCastTo(polymorphicType, targetType)) {
            String implicitFieldName = createImplicitTypeStateLocalName(p);
            if (builder == null) {
                builder = parent.create();
            }
            builder.tree(state.createSetInteger(frameState, new TypeGuard(p.getType(), signatureIndex), CodeTreeBuilder.singleString(implicitFieldName)));
        }
        signatureIndex++;
    }
    return builder == null ? null : builder.build();
}

Example 3 with TypeGuard

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

the class FlatNodeGenFactory method createExecuteChildImplicitCast.

private ChildExecutionResult createExecuteChildImplicitCast(CodeTreeBuilder parent, FrameState originalFrameState, FrameState frameState, NodeExecutionData execution, LocalVariable target) {
    CodeTreeBuilder builder = parent.create();
    List<TypeMirror> originalSourceTypes = typeSystem.lookupSourceTypes(target.getTypeMirror());
    List<TypeMirror> sourceTypes = resolveOptimizedImplicitSourceTypes(execution, target.getTypeMirror());
    TypeGuard typeGuard = new TypeGuard(target.getTypeMirror(), execution.getIndex());
    boolean throwsUnexpected = false;
    boolean elseIf = false;
    for (TypeMirror sourceType : sourceTypes) {
        ExecutableTypeData executableType = resolveTargetExecutable(execution, sourceType);
        elseIf = builder.startIf(elseIf);
        throwsUnexpected |= executableType.hasUnexpectedValue(context);
        builder.startGroup();
        builder.tree(state.createContainsOnly(frameState, originalSourceTypes.indexOf(sourceType), 1, new Object[] { typeGuard }, new Object[] { typeGuard }));
        builder.string(" && ");
        builder.tree(state.createIsNotAny(frameState, reachableSpecializationsArray));
        builder.end();
        builder.end();
        builder.startBlock();
        CodeTree value = callChildExecuteMethod(execution, executableType, frameState);
        value = expect(executableType.getReturnType(), sourceType, value);
        throwsUnexpected |= needsCastTo(executableType.getReturnType(), sourceType);
        ImplicitCastData cast = typeSystem.lookupCast(sourceType, target.getTypeMirror());
        if (cast != null) {
            // we need to store the original value to restore it in
            // case of a deopt
            String localName = createSourceTypeLocalName(target, sourceType);
            builder.startStatement().string(localName).string(" = ").tree(value).end();
            value = callMethod(null, cast.getMethod(), CodeTreeBuilder.singleString(localName));
        }
        builder.startStatement().string(target.getName()).string(" = ").tree(value).end();
        builder.end();
    }
    if (elseIf) {
        builder.startElseBlock();
    }
    LocalVariable genericValue = target.makeGeneric(context).nextName();
    builder.tree(createAssignExecuteChild(originalFrameState, frameState, builder, execution, node.getGenericExecutableType(null), genericValue));
    builder.startStatement().string(target.getName()).string(" = ");
    CodeTree implicitState = state.createExtractInteger(frameState, typeGuard);
    builder.tree(TypeSystemCodeGenerator.implicitExpectFlat(typeSystem, target.getTypeMirror(), genericValue.createReference(), implicitState));
    builder.end();
    if (!sourceTypes.isEmpty()) {
        builder.end();
    }
    return new ChildExecutionResult(builder.build(), throwsUnexpected);
}

Example 4 with TypeGuard

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

the class FlatNodeGenFactory method createFastPath.

private CodeTree createFastPath(CodeTreeBuilder parent, List<SpecializationData> allSpecializations, SpecializationGroup originalGroup, final ExecutableTypeData currentType, FrameState frameState) {
    final CodeTreeBuilder builder = parent.create();
    builder.tree(state.createLoad(frameState));
    int sharedExecutes = 0;
    for (NodeExecutionData execution : node.getChildExecutions()) {
        boolean canExecuteChild = execution.getIndex() < currentType.getEvaluatedCount();
        for (TypeGuard checkedGuard : originalGroup.getTypeGuards()) {
            if (checkedGuard.getSignatureIndex() == execution.getIndex()) {
                canExecuteChild = true;
                break;
            }
        }
        if (!canExecuteChild) {
            break;
        }
        for (TypeGuard checkedGuard : originalGroup.getTypeGuards()) {
            // we cannot pull out guards that use optimized implicit source types
            if (resolveOptimizedImplicitSourceTypes(execution, checkedGuard.getType()).size() > 1) {
                canExecuteChild = false;
                break;
            }
        }
        if (!canExecuteChild) {
            break;
        }
        builder.tree(createFastPathExecuteChild(builder, frameState.copy(), frameState, currentType, originalGroup, execution));
        sharedExecutes++;
    }
    List<BoxingSplit> boxingSplits = parameterBoxingElimination(originalGroup, sharedExecutes);
    if (boxingSplits.isEmpty()) {
        builder.tree(executeFastPathGroup(builder, frameState, currentType, originalGroup, sharedExecutes, null));
        addExplodeLoop(builder, originalGroup);
    } else {
        FrameState originalFrameState = frameState.copy();
        boolean elseIf = false;
        for (BoxingSplit split : boxingSplits) {
            elseIf = builder.startIf(elseIf);
            List<SpecializationData> specializations = split.group.collectSpecializations();
            builder.startGroup();
            builder.tree(state.createContainsOnly(frameState, 0, -1, specializations.toArray(), allSpecializations.toArray())).end();
            builder.string(" && ");
            builder.tree(state.createIsNotAny(frameState, allSpecializations.toArray()));
            builder.end();
            builder.end().startBlock();
            builder.tree(wrapInAMethod(builder, split.group, originalFrameState, split.getName(), executeFastPathGroup(builder, frameState.copy(), currentType, split.group, sharedExecutes, specializations)));
            builder.end();
        }
        builder.startElseBlock();
        builder.tree(wrapInAMethod(builder, originalGroup, originalFrameState, "generic", executeFastPathGroup(builder, frameState, currentType, originalGroup, sharedExecutes, null)));
        builder.end();
    }
    return builder.build();
}

Example 5 with TypeGuard

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

the class FlatNodeGenFactory method parameterBoxingElimination.

/*
     * It duplicates a group into small subgroups of specializations that don't need boxing when
     * executing the children.
     */
private List<BoxingSplit> parameterBoxingElimination(SpecializationGroup group, int evaluatedcount) {
    if (!boxingEliminationEnabled) {
        return Collections.emptyList();
    }
    List<SpecializationData> allSpecializations = group.collectSpecializations();
    List<Set<TypeGuard>> signatures = new ArrayList<>();
    List<List<SpecializationData>> signatureSpecializations = new ArrayList<>();
    for (SpecializationData specialization : allSpecializations) {
        int index = -1;
        List<TypeGuard> guards = new ArrayList<>();
        for (Parameter p : specialization.getSignatureParameters()) {
            index++;
            if (!ElementUtils.isPrimitive(p.getType())) {
                continue;
            } else if (index < evaluatedcount) {
                continue;
            } else {
                NodeChildData child = p.getSpecification().getExecution().getChild();
                if (child != null && child.findExecutableType(p.getType()) == null) {
                    // type cannot be executed so it cannot be eliminated
                    continue;
                }
            }
            guards.add(new TypeGuard(p.getType(), index));
        }
        if (!guards.isEmpty()) {
            boolean directFound = false;
            for (int i = 0; i < signatures.size(); i++) {
                if (guards.containsAll(signatures.get(i))) {
                    if (signatures.get(i).containsAll(guards)) {
                        directFound = true;
                    }
                    signatureSpecializations.get(i).add(specialization);
                }
            }
            if (!directFound) {
                signatures.add(new LinkedHashSet<>(guards));
                List<SpecializationData> specializations = new ArrayList<>();
                specializations.add(specialization);
                signatureSpecializations.add(specializations);
            }
        }
    }
    List<BoxingSplit> groups = new ArrayList<>();
    for (int i = 0; i < signatureSpecializations.size(); i++) {
        List<SpecializationData> groupedSpecialization = signatureSpecializations.get(i);
        if (allSpecializations.size() == groupedSpecialization.size()) {
            // contains all specializations does not make sense to group
            continue;
        }
        Set<TypeGuard> signature = signatures.get(i);
        TypeMirror[] signatureMirrors = new TypeMirror[signature.size()];
        int index = 0;
        for (TypeGuard typeGuard : signature) {
            signatureMirrors[index] = typeGuard.getType();
            index++;
        }
        groups.add(new BoxingSplit(SpecializationGroup.create(groupedSpecialization), signatureMirrors));
    }
    Collections.sort(groups, new Comparator<BoxingSplit>() {

        public int compare(BoxingSplit o1, BoxingSplit o2) {
            return Integer.compare(o2.primitiveSignature.length, o1.primitiveSignature.length);
        }
    });
    return groups;
}