Examples with Xnode claw.tatsu.xcodeml.xnode.common.Xnode used on opensource projects

Example 86 with Xnode

use of claw.tatsu.xcodeml.xnode.common.Xnode in project claw-compiler by C2SM-RCM.

the class ScaGPU method applySpecificTransformation.

/**
 * Apply specific transformation steps for GPU target.
 *
 * @param xcodeml Current translation unit.
 * @throws IllegalTransformationException If any transformation fails.
 */
private void applySpecificTransformation(Configuration cfg, XcodeProgram xcodeml) throws IllegalTransformationException {
    final Context context = xcodeml.context();
    AcceleratorConfiguration config = cfg.accelerator();
    if (_fctDef.hasEmptyBody()) {
        // Nothing to do in this function
        return;
    }
    /*
         * Create a nested loop with the new defined dimensions and wrap it around the
         * whole subroutine's body. This is for the moment a really naive transformation
         * idea but it is our start point. Use the first over clause to create it.
         */
    NestedDoStatement loops;
    if (forceAssumedShapedArrayPromotion) {
        if (_promotions.isEmpty()) {
            throw new IllegalTransformationException("Cannot assume shape of " + "array in elemental function/subroutine.", _claw.getPragma().lineNo());
        }
        PromotionInfo pi = _promotions.entrySet().iterator().next().getValue();
        loops = new NestedDoStatement(_claw.getDefaultLayoutReversed(cfg), pi, xcodeml);
    } else {
        loops = new NestedDoStatement(_claw.getDefaultLayoutReversed(cfg), xcodeml);
    }
    /*
         * Subroutine/function can have a contains section with inner subroutines or
         * functions. The newly created (nested) do statements should stop before this
         * contains section if it exists.
         */
    Xnode contains = _fctDef.body().matchSeq(Xcode.F_CONTAINS_STATEMENT);
    if (contains != null) {
        Xnode parallelRegionStart;
        if (_specialParallelRegionStart == null) {
            parallelRegionStart = Directive.findParallelRegionStart(context, _fctDef, null);
        } else {
            parallelRegionStart = _specialParallelRegionStart;
        }
        Xnode parallelRegionEnd = Directive.findParallelRegionEnd(context, _fctDef, contains);
        Body.shiftIn(parallelRegionStart, parallelRegionEnd, loops.getInnerStatement().body(), true);
        contains.insertBefore(loops.getOuterStatement());
    } else {
        // No contains section, all the body is copied to the do statements.
        Xnode parallelRegionStart;
        if (_specialParallelRegionStart == null) {
            parallelRegionStart = Directive.findParallelRegionStart(context, _fctDef, null);
        } else {
            parallelRegionStart = _specialParallelRegionStart;
        }
        Xnode parallelRegionEnd = Directive.findParallelRegionEnd(context, _fctDef, null);
        // Define a hook from where we can insert the new do statement
        Xnode hook = parallelRegionEnd != null ? parallelRegionEnd.nextSibling() : null;
        Body.shiftIn(parallelRegionStart, parallelRegionEnd, loops.getInnerStatement().body(), true);
        // Hook is null then we append the do statement to the current fct body
        if (hook == null) {
            _fctDef.body().append(loops.getOuterStatement());
        } else {
            // Insert new do statement before the hook element
            hook.insertBefore(loops.getOuterStatement());
        }
    }
    // TODO nodep passing!
    int collapse = Directive.generateLoopSeq(xcodeml, loops.getInnerStatement().body(), CompilerDirective.CLAW.getPrefix() + " nodep");
    // Prepare variables list for present/pcreate clauses and handle
    // promotion/privatize local strategy
    List<String> presentList = _fctDef.getPresentVariables(xcodeml);
    List<String> privateList = Collections.emptyList();
    List<String> createList = Collections.emptyList();
    if (config.getLocalStrategy() == AcceleratorLocalStrategy.PRIVATE) {
        privateList = applyPrivateStrategy(xcodeml);
    } else if (config.getLocalStrategy() == AcceleratorLocalStrategy.PROMOTE) {
        createList = applyPromoteStrategy(cfg, xcodeml);
    }
    // Generate the data region
    Xblock doStmtBlock = new Xblock(loops.getOuterStatement());
    Directive.generateDataRegionClause(xcodeml, presentList, createList, doStmtBlock);
    // Generate the parallel region
    Directive.generateParallelLoopClause(xcodeml, privateList, loops.getOuterStatement(), loops.getOuterStatement(), null, loops.size() + collapse);
    Directive.generateRoutineDirectives(xcodeml, _fctDef);
}

Example 87 with Xnode

use of claw.tatsu.xcodeml.xnode.common.Xnode in project claw-compiler by C2SM-RCM.

the class VectorBlock method fillUpWrittenVariables.

private void fillUpWrittenVariables(Xnode root) {
    List<Xnode> assignStatements = root.matchAll(Xcode.F_ASSIGN_STATEMENT);
    for (Xnode assign : assignStatements) {
        AssignStatement as = new AssignStatement(assign.element());
        _writtenVariables.add(as.getLhsName());
    }
}

Example 88 with Xnode

use of claw.tatsu.xcodeml.xnode.common.Xnode in project claw-compiler by C2SM-RCM.

the class VectorBlock method gatherWrittenVariables.

/**
 * Collect all variables written within the block.
 */
private void gatherWrittenVariables() {
    if (_writtenVariables == null) {
        _writtenVariables = new HashSet<>();
    }
    if (isSingleStatement()) {
        fillUpWrittenVariables(_startStmt);
    } else {
        Xnode crt = getStartStmt();
        while (!crt.equals(getEndStmt())) {
            fillUpWrittenVariables(crt);
            crt = crt.nextSibling();
        }
        if (crt.equals(getEndStmt())) {
            fillUpWrittenVariables(crt);
        }
    }
}

Example 89 with Xnode

use of claw.tatsu.xcodeml.xnode.common.Xnode in project claw-compiler by C2SM-RCM.

the class IfExtract method transform.

@Override
public void transform(XcodeProgram xcodeml, Translator translator, Transformation other) throws Exception {
    // Copy the body of the if statement inside the body of the do statement
    Xnode thenBlock = _ifStmt.matchDirectDescendant(Xcode.THEN);
    Xnode thenDoStmt = _doStmt.cloneNode();
    Body.append(thenDoStmt.body(), thenBlock.body());
    // Copy the if statement and clean its body
    Xnode newIfStmt = _ifStmt.cloneNode();
    Xnode newThen = newIfStmt.matchDirectDescendant(Xcode.THEN);
    for (Xnode n : newThen.body().children()) {
        n.delete();
    }
    // Add the new if statement after the do statement
    _doStmt.insertAfter(newIfStmt);
    // Insert the do statement in the new if-then statement
    newThen.body().insert(thenDoStmt, false);
    Xnode elseBlock = _ifStmt.matchDirectDescendant(Xcode.ELSE);
    if (elseBlock != null) {
        Xnode elseDoStmt = _doStmt.cloneNode();
        Body.append(elseDoStmt.body(), elseBlock.body());
        Xnode newElse = newIfStmt.matchDirectDescendant(Xcode.ELSE);
        for (Xnode n : newElse.body().children()) {
            n.delete();
        }
        newElse.body().insert(elseDoStmt, false);
        Xnode duplicateIf = elseDoStmt.body().matchDirectDescendant(Xcode.F_IF_STATEMENT);
        XnodeUtil.safeDelete(duplicateIf);
    }
    // Delete the old statements and pragma
    Xnode duplicateIf = thenDoStmt.body().matchDirectDescendant(Xcode.F_IF_STATEMENT);
    duplicateIf.delete();
    XnodeUtil.safeDelete(_ifStmt);
    XnodeUtil.safeDelete(_doStmt);
    removePragma();
}

Example 90 with Xnode

use of claw.tatsu.xcodeml.xnode.common.Xnode in project claw-compiler by C2SM-RCM.

the class LoopExtraction method transform.

/**
 * Apply the transformation. A loop extraction is applied in the following
 * steps: 1) Duplicate the function targeted by the transformation 2) Extract
 * the loop body in the duplicated function and remove the loop. 3) Adapt
 * function call and demote array references in the duplicated function body. 4)
 * Optional: Add a LoopFusion transformation to the transformations' queue.
 *
 * @param xcodeml        The XcodeML on which the transformations are applied.
 * @param translator     The translator used to applied the transformations.
 * @param transformation Only for dependent transformation. The other
 *                       transformation part of the transformation.
 * @throws IllegalTransformationException if the transformation cannot be
 *                                        applied.
 */
@Override
public void transform(XcodeProgram xcodeml, Translator translator, Transformation transformation) throws Exception {
    ClawTranslator ct = (ClawTranslator) translator;
    final Context context = ct.context();
    /*
         * DUPLICATE THE FUNCTION
         */
    // Duplicate function definition
    FfunctionDefinition clonedFctDef = _fctDefToExtract.cloneNode();
    String newFctTypeHash = xcodeml.getTypeTable().generateHash(FortranType.FUNCTION);
    String newFctName = clonedFctDef.getName() + ClawConstant.EXTRACTION_SUFFIX + translator.getNextTransformationCounter();
    clonedFctDef.name().setValue(newFctName);
    clonedFctDef.name().setType(newFctTypeHash);
    // Update the symbol table in the fct definition
    Xid fctId = clonedFctDef.getSymbolTable().get(_fctDefToExtract.getName());
    fctId.setType(newFctTypeHash);
    fctId.setName(newFctName);
    // Get the fctType in typeTable
    FfunctionType fctType = xcodeml.getTypeTable().getFunctionType(_fctDefToExtract);
    FfunctionType newFctType = fctType.cloneNode();
    newFctType.setType(newFctTypeHash);
    xcodeml.getTypeTable().add(newFctType);
    // Get the id from the global symbols table
    Xid globalFctId = xcodeml.getGlobalSymbolsTable().get(_fctDefToExtract.getName());
    // If the fct is define in the global symbol table, duplicate it
    if (globalFctId != null) {
        Xid newFctId = globalFctId.cloneNode();
        newFctId.setType(newFctTypeHash);
        newFctId.setName(newFctName);
        xcodeml.getGlobalSymbolsTable().add(newFctId);
    }
    // Insert the duplicated function declaration
    _fctDefToExtract.insertAfter(clonedFctDef);
    // Find the loop that will be extracted
    Xnode loopInClonedFct = locateDoStatement(clonedFctDef);
    Message.debug(context, "loop-extract transformation: " + _claw.getPragma().value());
    Message.debug(context, "  created subroutine: " + clonedFctDef.getName());
    /*
         * REMOVE BODY FROM THE LOOP AND DELETE THE LOOP
         */
    // 1. append body into fct body after loop
    Loop.extractBody(loopInClonedFct);
    // 2. delete loop
    loopInClonedFct.delete();
    /*
         * ADAPT FUNCTION CALL AND DEMOTE ARRAY REFERENCES IN THE BODY OF THE FUNCTION
         */
    // Wrap function call with loop
    Xnode extractedLoop = wrapCallWithLoop(xcodeml, _extractedLoop);
    Message.debug(context, "  call wrapped with loop: " + _fctCall.matchDirectDescendant(Xcode.NAME).value() + " --> " + clonedFctDef.getName());
    // Change called fct name
    _fctCall.matchDirectDescendant(Xcode.NAME).setValue(newFctName);
    _fctCall.matchDirectDescendant(Xcode.NAME).setType(newFctTypeHash);
    // Adapt function call parameters and function declaration
    XdeclTable fctDeclarations = clonedFctDef.getDeclarationTable();
    XsymbolTable fctSymbols = clonedFctDef.getSymbolTable();
    Message.debug(context, "  Start to apply mapping: " + _claw.getMappings().size());
    for (ClawMapping mapping : _claw.getMappings()) {
        Message.debug(context, "Apply mapping (" + mapping.getMappedDimensions() + ") ");
        for (ClawMappingVar var : mapping.getMappedVariables()) {
            Message.debug(context, "  Var: " + var);
            Optional<Xnode> argument = _fctCall.findArg(var.getArgMapping());
            if (!argument.isPresent()) {
                continue;
            }
            /*
                 * Case 1: Var --> ArrayRef Var --> ArrayRef transformation 1. Check that the
                 * variable used as array index exists in the current scope (XdeclTable). If so,
                 * get its type value. Create a Var element for the arrayIndex. Create the
                 * arrayIndex element with Var as child.
                 *
                 * 2. Get the reference type of the base variable. 2.1 Create the varRef element
                 * with the type of base variable 2.2 insert clone of base variable in varRef 3.
                 * Create arrayRef element with varRef + arrayIndex
                 */
            if (argument.get().is(Xcode.VAR)) {
                FbasicType type = xcodeml.getTypeTable().getBasicType(argument.get());
                // Demotion cannot be applied as type dimension is smaller
                if (type.getDimensions() < mapping.getMappedDimensions()) {
                    throw new IllegalTransformationException("mapping dimensions too big. Mapping " + mapping.toString() + " is wrong ...", _claw.getPragma().lineNo());
                }
                Xnode newArg = xcodeml.createNode(Xcode.F_ARRAY_REF);
                newArg.setType(type.getRef());
                Xnode varRef = xcodeml.createNode(Xcode.VAR_REF);
                varRef.setType(argument.get().getType());
                varRef.append(argument.get(), true);
                newArg.append(varRef);
                // create arrayIndex
                for (ClawMappingVar mappingVar : mapping.getMappingVariables()) {
                    Xnode arrayIndex = xcodeml.createNode(Xcode.ARRAY_INDEX);
                    // Find the mapping var in the local table (fct scope)
                    Xnode mappingVarDecl = _fctDef.getDeclarationTable().get(mappingVar.getArgMapping());
                    // Add to arrayIndex
                    Xnode newMappingVar = xcodeml.createVar(mappingVarDecl.getType(), mappingVarDecl.matchSeq(Xcode.NAME).value(), Xscope.LOCAL);
                    arrayIndex.append(newMappingVar);
                    newArg.append(arrayIndex);
                }
                argument.get().insertAfter(newArg);
                argument.get().delete();
            }
            // Case 2: ArrayRef (n arrayIndex) --> ArrayRef (n+m arrayIndex)
            // Change variable declaration in extracted fct
            Xnode varDecl = fctDeclarations.get(var.getFctMapping());
            Xid id = fctSymbols.get(var.getFctMapping());
            FbasicType varDeclType = xcodeml.getTypeTable().getBasicType(varDecl);
            // Case 1: variable is demoted to scalar then take the ref type
            if (varDeclType.getDimensions() == mapping.getMappedDimensions()) {
                Xnode newVarDecl = xcodeml.createNode(Xcode.VAR_DECL);
                newVarDecl.append(xcodeml.createName(var.getFctMapping(), varDeclType.getRef()));
                fctDeclarations.replace(newVarDecl, var.getFctMapping());
                id.setType(varDeclType.getRef());
            }
        }
    // Loop mapped variables
    }
    // Loop over mapping clauses
    // Adapt array reference in function body
    List<Xnode> arrayReferences = clonedFctDef.body().matchAll(Xcode.F_ARRAY_REF);
    for (Xnode ref : arrayReferences) {
        if (!Xnode.isOfCode(ref.matchSeq(Xcode.VAR_REF).child(0), Xcode.VAR)) {
            continue;
        }
        String mappedVar = ref.matchSeq(Xcode.VAR_REF, Xcode.VAR).value();
        if (_fctMappingMap.containsKey(mappedVar)) {
            ClawMapping mapping = _fctMappingMap.get(mappedVar);
            boolean changeRef = true;
            int mappingIndex = 0;
            for (Xnode e : ref.children()) {
                if (e.is(Xcode.ARRAY_INDEX)) {
                    List<Xnode> children = e.children();
                    if (!children.isEmpty() && Xnode.isOfCode(children.get(0), Xcode.VAR)) {
                        String varName = e.matchSeq(Xcode.VAR).value();
                        if (varName.equals(mapping.getMappingVariables().get(mappingIndex).getFctMapping())) {
                            ++mappingIndex;
                        } else {
                            changeRef = false;
                        }
                    }
                }
            }
            if (changeRef) {
                // TODO Var ref should be extracted only if the reference can be
                // totally demoted
                ref.insertBefore(ref.matchSeq(Xcode.VAR_REF, Xcode.VAR).cloneNode());
                ref.delete();
            }
        }
    }
    // Generate directive pragmas if needed
    Xnode grip = null;
    if (_claw.hasClause(ClawClause.ACC)) {
        /*
             * TODO see TODO in ExpandNotation OpenACC and OpenMP loop construct are pretty
             * different ... have to look how to do that properly. See issue #22
             */
        grip = Directive.generateAcceleratorClause(xcodeml, extractedLoop, _claw.value(ClawClause.ACC));
    }
    if (_claw.hasClause(ClawClause.PARALLEL)) {
        Directive.generateParallelRegion(xcodeml, (grip == null) ? extractedLoop : grip, extractedLoop);
    }
    // TODO must be triggered by a clause
    // Directive.generateRoutineDirectives(_claw, xcodeml, clonedFctDef);
    // Add any additional transformation defined in the directive clauses
    ct.generateAdditionalTransformation(_claw, xcodeml, extractedLoop);
    removePragma();
    transformed();
}