+++ /dev/null
-package IR.Flat;
-import IR.*;
-import IR.Tree.*;
-import java.util.*;
-
-public class BuildFlat {
- State state;
- Hashtable temptovar;
- MethodDescriptor currmd;
- TypeUtil typeutil;
-
- public BuildFlat(State st, TypeUtil typeutil) {
- state=st;
- temptovar=new Hashtable();
- this.typeutil=typeutil;
- }
-
- public Hashtable getMap() {
- return temptovar;
- }
-
- public void buildFlat() {
- Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
- while(it.hasNext()) {
- ClassDescriptor cn=(ClassDescriptor)it.next();
- flattenClass(cn);
- }
-
- Iterator task_it=state.getTaskSymbolTable().getDescriptorsIterator();
- while(task_it.hasNext()) {
- TaskDescriptor td=(TaskDescriptor)task_it.next();
- flattenTask(td);
- }
- }
-
- private void flattenTask(TaskDescriptor td) {
- BlockNode bn=state.getMethodBody(td);
- NodePair np=flattenBlockNode(bn);
- FlatNode fn=np.getBegin();
- if (np.getEnd().kind()!=FKind.FlatReturnNode) {
- FlatReturnNode rnflat=new FlatReturnNode(null);
- np.getEnd().addNext(rnflat);
- }
-
- FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.PRE);
- ffan.addNext(fn);
-
- FlatMethod fm=new FlatMethod(td);
- fm.addNext(ffan);
-
- Hashtable visitedset=new Hashtable();
-
- for(int i=0;i<td.numParameters();i++) {
- VarDescriptor paramvd=td.getParameter(i);
- fm.addParameterTemp(getTempforVar(paramvd));
- TagExpressionList tel=td.getTag(paramvd);
- //BUG added next line to fix...to test feed in any task program
- if (tel!=null)
- for(int j=0;j<tel.numTags();j++) {
- TagVarDescriptor tvd=(TagVarDescriptor) td.getParameterTable().getFromSameScope(tel.getName(j));
- TempDescriptor tagtmp=getTempforVar(tvd);
- if (!visitedset.containsKey(tvd.getName())) {
- visitedset.put(tvd.getName(),tvd.getTag());
- fm.addTagTemp(tagtmp);
- } else {
- TagDescriptor tmptd=(TagDescriptor) visitedset.get(tvd.getName());
- if (!tmptd.equals(tvd.getTag()))
- throw new Error("Two different tag types with same name as parameters to:"+td);
- }
- tel.setTemp(j, tagtmp);
- }
- }
-
- /* Flatten Vector of Flag Effects */
- Vector flags=td.getFlagEffects();
- updateFlagActionNode(ffan,flags);
-
- state.addFlatCode(td,fm);
- }
-
-
- /* This method transforms a vector of FlagEffects into the FlatFlagActionNode */
- private void updateFlagActionNode(FlatFlagActionNode ffan, Vector flags) {
- if (flags==null) // Do nothing if the flag effects vector is empty
- return;
-
- for(int i=0;i<flags.size();i++) {
- FlagEffects fes=(FlagEffects)flags.get(i);
- TempDescriptor flagtemp=getTempforVar(fes.getVar());
- // Process the flags
- for(int j=0;j<fes.numEffects();j++) {
- FlagEffect fe=fes.getEffect(j);
- ffan.addFlagAction(flagtemp, fe.getFlag(), fe.getStatus());
- }
- // Process the tags
- for(int j=0;j<fes.numTagEffects();j++) {
- TagEffect te=fes.getTagEffect(j);
- TempDescriptor tagtemp=getTempforVar(te.getTag());
-
- ffan.addTagAction(flagtemp, te.getTag().getTag(), tagtemp, te.getStatus());
- }
- }
- }
-
- private void flattenClass(ClassDescriptor cn) {
- Iterator methodit=cn.getMethods();
- while(methodit.hasNext()) {
- currmd=(MethodDescriptor)methodit.next();
- BlockNode bn=state.getMethodBody(currmd);
- NodePair np=flattenBlockNode(bn);
- FlatNode fn=np.getBegin();
- if (state.THREAD&&currmd.getModifiers().isSynchronized()) {
- MethodDescriptor memd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorEnter");
- TempDescriptor thistd=getTempforVar(currmd.getThis());
- FlatCall fc=new FlatCall(memd, null, thistd, new TempDescriptor[0]);
- fc.addNext(fn);
- fn=fc;
- if (np.getEnd().kind()!=FKind.FlatReturnNode) {
- MethodDescriptor memdex=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
- FlatCall fcunlock=new FlatCall(memdex, null, thistd, new TempDescriptor[0]);
- np.getEnd().addNext(fcunlock);
- FlatReturnNode rnflat=new FlatReturnNode(null);
- fcunlock.addNext(rnflat);
- }
- } else if (state.DSM&&currmd.getModifiers().isAtomic()) {
- FlatAtomicEnterNode an=new FlatAtomicEnterNode();
- an.addNext(fn);
- fn=an;
- if (np.getEnd().kind()!=FKind.FlatReturnNode) {
- FlatAtomicExitNode aen=new FlatAtomicExitNode();
- np.getEnd().addNext(aen);
- FlatReturnNode rnflat=new FlatReturnNode(null);
- aen.addNext(rnflat);
- }
- } else if (np.getEnd().kind()!=FKind.FlatReturnNode) {
- FlatReturnNode rnflat=new FlatReturnNode(null);
- np.getEnd().addNext(rnflat);
- }
-
- FlatMethod fm=new FlatMethod(currmd);
- fm.addNext(fn);
- if (!currmd.isStatic())
- fm.addParameterTemp(getTempforParam(currmd.getThis()));
- for(int i=0;i<currmd.numParameters();i++) {
- fm.addParameterTemp(getTempforParam(currmd.getParameter(i)));
- }
- state.addFlatCode(currmd,fm);
- }
- }
-
- private NodePair flattenBlockNode(BlockNode bn) {
- FlatNode begin=null;
- FlatNode end=null;
- for(int i=0;i<bn.size();i++) {
- NodePair np=flattenBlockStatementNode(bn.get(i));
- FlatNode np_begin=np.getBegin();
- FlatNode np_end=np.getEnd();
- if (begin==null) {
- begin=np_begin;
- }
- if (end==null) {
- end=np_end;
- } else {
- end.addNext(np_begin);
- end=np_end;
- }
- }
- if (begin==null) {
- end=begin=new FlatNop();
- }
- return new NodePair(begin,end);
- }
-
- private NodePair flattenBlockExpressionNode(BlockExpressionNode en) {
- TempDescriptor tmp=TempDescriptor.tempFactory("neverused",en.getExpression().getType());
- return flattenExpressionNode(en.getExpression(),tmp);
- }
-
- private NodePair flattenCastNode(CastNode cn,TempDescriptor out_temp) {
- TempDescriptor tmp=TempDescriptor.tempFactory("tocast",cn.getExpression().getType());
- NodePair np=flattenExpressionNode(cn.getExpression(), tmp);
- FlatCastNode fcn=new FlatCastNode(cn.getType(), tmp, out_temp);
- np.getEnd().addNext(fcn);
- return new NodePair(np.getBegin(),fcn);
- }
-
- private NodePair flattenLiteralNode(LiteralNode ln,TempDescriptor out_temp) {
- FlatLiteralNode fln=new FlatLiteralNode(ln.getType(), ln.getValue(), out_temp);
- return new NodePair(fln,fln);
- }
-
- private NodePair flattenCreateObjectNode(CreateObjectNode con,TempDescriptor out_temp) {
- TypeDescriptor td=con.getType();
- if (!td.isArray()) {
- FlatNew fn=new FlatNew(td, out_temp, con.isGlobal());
- TempDescriptor[] temps=new TempDescriptor[con.numArgs()];
- FlatNode last=fn;
- if (td.getClassDesc().hasFlags()) {
- // if (con.getFlagEffects()!=null) {
- FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.NEWOBJECT);
- FlagEffects fes=con.getFlagEffects();
- TempDescriptor flagtemp=out_temp;
- if (fes!=null) {
- for(int j=0;j<fes.numEffects();j++) {
- FlagEffect fe=fes.getEffect(j);
- ffan.addFlagAction(flagtemp, fe.getFlag(), fe.getStatus());
- }
- for(int j=0;j<fes.numTagEffects();j++) {
- TagEffect te=fes.getTagEffect(j);
- TempDescriptor tagtemp=getTempforVar(te.getTag());
-
- ffan.addTagAction(flagtemp, te.getTag().getTag(), tagtemp, te.getStatus());
- }
- } else {
- ffan.addFlagAction(flagtemp, null, false);
- }
- last.addNext(ffan);
- last=ffan;
- }
- //Build arguments
- for(int i=0;i<con.numArgs();i++) {
- ExpressionNode en=con.getArg(i);
- TempDescriptor tmp=TempDescriptor.tempFactory("arg",en.getType());
- temps[i]=tmp;
- NodePair np=flattenExpressionNode(en, tmp);
- last.addNext(np.getBegin());
- last=np.getEnd();
- }
- MethodDescriptor md=con.getConstructor();
- //Call to constructor
- FlatCall fc=new FlatCall(md, null, out_temp, temps);
- last.addNext(fc);
- last=fc;
- return new NodePair(fn,last);
- } else {
- FlatNode first=null;
- FlatNode last=null;
- TempDescriptor[] temps=new TempDescriptor[con.numArgs()];
- for (int i=0;i<con.numArgs();i++) {
- ExpressionNode en=con.getArg(i);
- TempDescriptor tmp=TempDescriptor.tempFactory("arg",en.getType());
- temps[i]=tmp;
- NodePair np=flattenExpressionNode(en, tmp);
- if (first==null)
- first=np.getBegin();
- else
- last.addNext(np.getBegin());
- last=np.getEnd();
-
- TempDescriptor tmp2=(i==0)?
- out_temp:
- TempDescriptor.tempFactory("arg",en.getType());
- }
- FlatNew fn=new FlatNew(td, out_temp, temps[0], con.isGlobal());
- last.addNext(fn);
- if (temps.length>1) {
- NodePair np=generateNewArrayLoop(temps, td.dereference(), out_temp, 0, con.isGlobal());
- fn.addNext(np.getBegin());
- return new NodePair(first,np.getEnd());
- } else
- return new NodePair(first, fn);
- }
- }
-
- private NodePair generateNewArrayLoop(TempDescriptor[] temparray, TypeDescriptor td, TempDescriptor tmp, int i, boolean isglobal) {
- TempDescriptor index=TempDescriptor.tempFactory("index",new TypeDescriptor(TypeDescriptor.INT));
- TempDescriptor tmpone=TempDescriptor.tempFactory("index",new TypeDescriptor(TypeDescriptor.INT));
- FlatNop fnop=new FlatNop();//last node
-
- //index=0
- FlatLiteralNode fln=new FlatLiteralNode(index.getType(),new Integer(0),index);
- //tmpone=1
- FlatLiteralNode fln2=new FlatLiteralNode(tmpone.getType(),new Integer(1),tmpone);
-
- TempDescriptor tmpbool=TempDescriptor.tempFactory("comp",new TypeDescriptor(TypeDescriptor.BOOLEAN));
-
- FlatOpNode fcomp=new FlatOpNode(tmpbool,index,temparray[i],new Operation(Operation.LT));
- FlatCondBranch fcb=new FlatCondBranch(tmpbool);
- //is index<temp[i]
- TempDescriptor new_tmp=TempDescriptor.tempFactory("tmp",td);
- FlatNew fn=new FlatNew(td, new_tmp, temparray[i+1], isglobal);
- FlatSetElementNode fsen=new FlatSetElementNode(tmp,index,new_tmp);
- // index=index+1
- FlatOpNode fon=new FlatOpNode(index,index,tmpone,new Operation(Operation.ADD));
- //jump out
- fln.addNext(fln2);
- fln2.addNext(fcomp);
- fcomp.addNext(fcb);
- fcb.addTrueNext(fn);
- fcb.addFalseNext(fnop);
- fn.addNext(fsen);
- //Recursive call here
- if ((i+2)<temparray.length) {
- NodePair np2=generateNewArrayLoop(temparray, td.dereference(), new_tmp, i+1, isglobal);
- fsen.addNext(np2.getBegin());
- np2.getEnd().addNext(fon);
- } else {
- fsen.addNext(fon);
- }
- fon.addNext(fcomp);
- return new NodePair(fln, fnop);
- }
-
- private NodePair flattenMethodInvokeNode(MethodInvokeNode min,TempDescriptor out_temp) {
- TempDescriptor[] temps=new TempDescriptor[min.numArgs()];
- FlatNode first=null;
- FlatNode last=null;
- TempDescriptor thisarg=null;
-
- if (min.getExpression()!=null) {
- thisarg=TempDescriptor.tempFactory("thisarg",min.getExpression().getType());
- NodePair np=flattenExpressionNode(min.getExpression(),thisarg);
- first=np.getBegin();
- last=np.getEnd();
- }
-
- //Build arguments
- for(int i=0;i<min.numArgs();i++) {
- ExpressionNode en=min.getArg(i);
- TempDescriptor td=TempDescriptor.tempFactory("arg",en.getType());
- temps[i]=td;
- NodePair np=flattenExpressionNode(en, td);
- if (first==null)
- first=np.getBegin();
- else
- last.addNext(np.getBegin());
- last=np.getEnd();
- }
-
- MethodDescriptor md=min.getMethod();
-
- //Call to constructor
-
- FlatCall fc;
- if(md.getReturnType()==null||md.getReturnType().isVoid())
- fc=new FlatCall(md, null, thisarg, temps);
- else
- fc=new FlatCall(md, out_temp, thisarg, temps);
- if (first==null) {
- first=fc;
- } else
- last.addNext(fc);
- return new NodePair(first,fc);
- }
-
- private NodePair flattenFieldAccessNode(FieldAccessNode fan,TempDescriptor out_temp) {
- TempDescriptor tmp=TempDescriptor.tempFactory("temp",fan.getExpression().getType());
- NodePair npe=flattenExpressionNode(fan.getExpression(),tmp);
- FlatFieldNode fn=new FlatFieldNode(fan.getField(),tmp,out_temp);
- npe.getEnd().addNext(fn);
- return new NodePair(npe.getBegin(),fn);
- }
-
- private NodePair flattenArrayAccessNode(ArrayAccessNode aan,TempDescriptor out_temp) {
- TempDescriptor tmp=TempDescriptor.tempFactory("temp",aan.getExpression().getType());
- TempDescriptor tmpindex=TempDescriptor.tempFactory("temp",aan.getIndex().getType());
- NodePair npe=flattenExpressionNode(aan.getExpression(),tmp);
- NodePair npi=flattenExpressionNode(aan.getIndex(),tmpindex);
- FlatElementNode fn=new FlatElementNode(tmp,tmpindex,out_temp);
- npe.getEnd().addNext(npi.getBegin());
- npi.getEnd().addNext(fn);
- return new NodePair(npe.getBegin(),fn);
- }
-
- private NodePair flattenAssignmentNode(AssignmentNode an,TempDescriptor out_temp) {
- // Three cases:
- // left side is variable
- // left side is field
- // left side is array
-
- Operation base=an.getOperation().getBaseOp();
- boolean pre=base==null||(base.getOp()!=Operation.POSTINC&&base.getOp()!=Operation.POSTDEC);
-
- if (!pre) {
- //rewrite the base operation
- base=base.getOp()==Operation.POSTINC?new Operation(Operation.ADD):new Operation(Operation.SUB);
- }
- FlatNode first=null;
- FlatNode last=null;
- TempDescriptor src_tmp=an.getSrc()==null?TempDescriptor.tempFactory("srctmp",an.getDest().getType()):TempDescriptor.tempFactory("srctmp",an.getSrc().getType());
-
- //Get src value
- if (an.getSrc()!=null) {
- NodePair np_src=flattenExpressionNode(an.getSrc(),src_tmp);
- first=np_src.getBegin();
- last=np_src.getEnd();
- } else if (!pre) {
- FlatLiteralNode fln=new FlatLiteralNode(new TypeDescriptor(TypeDescriptor.INT) ,new Integer(1),src_tmp);
- first=fln;
- last=fln;
- }
-
- if (an.getDest().kind()==Kind.FieldAccessNode) {
- //We are assigning an object field
-
- FieldAccessNode fan=(FieldAccessNode)an.getDest();
- ExpressionNode en=fan.getExpression();
- TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
- NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
- if (first==null)
- first=np_baseexp.getBegin();
- else
- last.addNext(np_baseexp.getBegin());
- last=np_baseexp.getEnd();
-
- //See if we need to perform an operation
- if (base!=null) {
- //If it is a preinc we need to store the initial value
- TempDescriptor src_tmp2=pre?TempDescriptor.tempFactory("src",an.getDest().getType()):out_temp;
- TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
-
- FlatFieldNode ffn=new FlatFieldNode(fan.getField(), dst_tmp, src_tmp2);
- last.addNext(ffn);
- last=ffn;
- FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
- src_tmp=tmp;
- last.addNext(fon);
- last=fon;
- }
-
- FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
- last.addNext(fsfn);
- last=fsfn;
- if (pre) {
- FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
- fsfn.addNext(fon2);
- last=fon2;
- }
- return new NodePair(first, last);
- } else if (an.getDest().kind()==Kind.ArrayAccessNode) {
- //We are assigning an array element
-
-
- ArrayAccessNode aan=(ArrayAccessNode)an.getDest();
- ExpressionNode en=aan.getExpression();
- ExpressionNode enindex=aan.getIndex();
- TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
- TempDescriptor index_tmp=TempDescriptor.tempFactory("index",enindex.getType());
- NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
- NodePair np_indexexp=flattenExpressionNode(enindex, index_tmp);
- if (first==null)
- first=np_baseexp.getBegin();
- else
- last.addNext(np_baseexp.getBegin());
- np_baseexp.getEnd().addNext(np_indexexp.getBegin());
- last=np_indexexp.getEnd();
-
- //See if we need to perform an operation
- if (base!=null) {
- //If it is a preinc we need to store the initial value
- TempDescriptor src_tmp2=pre?TempDescriptor.tempFactory("src",an.getDest().getType()):out_temp;
- TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
-
- FlatElementNode fen=new FlatElementNode(dst_tmp, index_tmp, src_tmp2);
- last.addNext(fen);
- last=fen;
- FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
- src_tmp=tmp;
- last.addNext(fon);
- last=fon;
- }
-
-
- FlatSetElementNode fsen=new FlatSetElementNode(dst_tmp, index_tmp, src_tmp);
- last.addNext(fsen);
- last=fsen;
- if (pre) {
- FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
- fsen.addNext(fon2);
- last=fon2;
- }
- return new NodePair(first, last);
- } else if (an.getDest().kind()==Kind.NameNode) {
- //We could be assigning a field or variable
- NameNode nn=(NameNode)an.getDest();
- if (nn.getExpression()!=null) {
- //It is a field
- FieldAccessNode fan=(FieldAccessNode)nn.getExpression();
- ExpressionNode en=fan.getExpression();
- TempDescriptor dst_tmp=TempDescriptor.tempFactory("dst",en.getType());
- NodePair np_baseexp=flattenExpressionNode(en, dst_tmp);
- if (first==null)
- first=np_baseexp.getBegin();
- else
- last.addNext(np_baseexp.getBegin());
- last=np_baseexp.getEnd();
-
- //See if we need to perform an operation
- if (base!=null) {
- //If it is a preinc we need to store the initial value
- TempDescriptor src_tmp2=pre?TempDescriptor.tempFactory("src",an.getDest().getType()):out_temp;
- TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
-
- FlatFieldNode ffn=new FlatFieldNode(fan.getField(), dst_tmp, src_tmp2);
- last.addNext(ffn);
- last=ffn;
- FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
- src_tmp=tmp;
- last.addNext(fon);
- last=fon;
- }
-
-
- FlatSetFieldNode fsfn=new FlatSetFieldNode(dst_tmp, fan.getField(), src_tmp);
- last.addNext(fsfn);
- last=fsfn;
- if (pre) {
- FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
- fsfn.addNext(fon2);
- last=fon2;
- }
- return new NodePair(first, last);
- } else {
- if (nn.getField()!=null) {
- //It is a field
- //Get src value
-
- //See if we need to perform an operation
- if (base!=null) {
- //If it is a preinc we need to store the initial value
- TempDescriptor src_tmp2=pre?TempDescriptor.tempFactory("src",an.getDest().getType()):out_temp;
- TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
-
- FlatFieldNode ffn=new FlatFieldNode(nn.getField(), getTempforVar(nn.getVar()), src_tmp2);
- if (first==null)
- first=ffn;
- else {
- last.addNext(ffn);
- }
- last=ffn;
- FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
- src_tmp=tmp;
- last.addNext(fon);
- last=fon;
- }
-
- FlatSetFieldNode fsfn=new FlatSetFieldNode(getTempforVar(nn.getVar()), nn.getField(), src_tmp);
- if (first==null) {
- first=fsfn;
- } else {
- last.addNext(fsfn);
- }
- last=fsfn;
- if (pre) {
- FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
- fsfn.addNext(fon2);
- last=fon2;
- }
- return new NodePair(first, last);
- } else {
- //It is a variable
- //See if we need to perform an operation
-
- if (base!=null) {
- //If it is a preinc we need to store the initial value
- TempDescriptor src_tmp2=getTempforVar(nn.getVar());
- TempDescriptor tmp=TempDescriptor.tempFactory("srctmp3",an.getDest().getType());
- if (!pre) {
- FlatOpNode fon=new FlatOpNode(out_temp, src_tmp2, null, new Operation(Operation.ASSIGN));
- if (first==null)
- first=fon;
- else
- last.addNext(fon);
- last=fon;
- }
-
- FlatOpNode fon=new FlatOpNode(tmp, src_tmp2, src_tmp, base);
- if (first==null)
- first=fon;
- else
- last.addNext(fon);
- src_tmp=tmp;
- last=fon;
- }
-
- FlatOpNode fon=new FlatOpNode(getTempforVar(nn.getVar()), src_tmp, null, new Operation(Operation.ASSIGN));
- last.addNext(fon);
- last=fon;
- if (pre) {
- FlatOpNode fon2=new FlatOpNode(out_temp, src_tmp, null, new Operation(Operation.ASSIGN));
- fon.addNext(fon2);
- last=fon2;
- }
- return new NodePair(first, last);
- }
- }
- }
- throw new Error();
- }
-
- private NodePair flattenNameNode(NameNode nn,TempDescriptor out_temp) {
- if (nn.getExpression()!=null) {
- /* Hack - use subtree instead */
- return flattenExpressionNode(nn.getExpression(),out_temp);
- } else if (nn.getField()!=null) {
- TempDescriptor tmp=getTempforVar(nn.getVar());
- FlatFieldNode ffn=new FlatFieldNode(nn.getField(), tmp, out_temp);
- return new NodePair(ffn,ffn);
- } else {
- TempDescriptor tmp=getTempforVar(nn.isTag()?nn.getTagVar():nn.getVar());
- if (nn.isTag()) {
- //propagate tag
- out_temp.setTag(tmp.getTag());
- }
- FlatOpNode fon=new FlatOpNode(out_temp, tmp, null, new Operation(Operation.ASSIGN));
- return new NodePair(fon,fon);
- }
- }
-
- private NodePair flattenOpNode(OpNode on,TempDescriptor out_temp) {
- TempDescriptor temp_left=TempDescriptor.tempFactory("leftop",on.getLeft().getType());
- TempDescriptor temp_right=null;
-
- Operation op=on.getOp();
- /* We've moved this to assignment nodes
-
- if (op.getOp()==Operation.POSTINC||
- op.getOp()==Operation.POSTDEC||
- op.getOp()==Operation.PREINC||
- op.getOp()==Operation.PREDEC) {
- LiteralNode ln=new LiteralNode("int",new Integer(1));
- ln.setType(new TypeDescriptor(TypeDescriptor.INT));
-
- AssignmentNode an=new AssignmentNode(on.getLeft(),
- new OpNode(on.getLeft(),ln,
- new Operation((op.getOp()==Operation.POSTINC||op.getOp()==Operation.PREINC)?Operation.PLUS:Operation.MINUS))
- );
- if (op.getOp()==Operation.POSTINC||
- op.getOp()==Operation.POSTDEC) {
- //Can't do, this could have side effects
- NodePair left=flattenExpressionNode(on.getLeft(),out_temp);
- NodePair assign=flattenAssignmentNode(an,temp_left);
- left.getEnd().addNext(assign.getBegin());
- return new NodePair(left.getBegin(),assign.getEnd());
- } else {
- NodePair assign=flattenAssignmentNode(an,out_temp);
- return assign;
- }
- } */
-
- NodePair left=flattenExpressionNode(on.getLeft(),temp_left);
- NodePair right;
- if (on.getRight()!=null) {
- temp_right=TempDescriptor.tempFactory("rightop",on.getRight().getType());
- right=flattenExpressionNode(on.getRight(),temp_right);
- } else {
- FlatNop nop=new FlatNop();
- right=new NodePair(nop,nop);
- }
-
- if (op.getOp()==Operation.LOGIC_OR) {
- /* Need to do shortcircuiting */
- FlatCondBranch fcb=new FlatCondBranch(temp_left);
- FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
- FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
- FlatNop fnop=new FlatNop();
- left.getEnd().addNext(fcb);
- fcb.addFalseNext(right.getBegin());
- right.getEnd().addNext(fon2);
- fon2.addNext(fnop);
- fcb.addTrueNext(fon1);
- fon1.addNext(fnop);
- return new NodePair(left.getBegin(), fnop);
- } else if (op.getOp()==Operation.LOGIC_AND) {
- /* Need to do shortcircuiting */
- FlatCondBranch fcb=new FlatCondBranch(temp_left);
- FlatOpNode fon1=new FlatOpNode(out_temp,temp_left,null,new Operation(Operation.ASSIGN));
- FlatOpNode fon2=new FlatOpNode(out_temp,temp_right,null,new Operation(Operation.ASSIGN));
- FlatNop fnop=new FlatNop();
- left.getEnd().addNext(fcb);
- fcb.addTrueNext(right.getBegin());
- right.getEnd().addNext(fon2);
- fon2.addNext(fnop);
- fcb.addFalseNext(fon1);
- fon1.addNext(fnop);
- return new NodePair(left.getBegin(), fnop);
- }
-
- FlatOpNode fon=new FlatOpNode(out_temp,temp_left,temp_right,op);
- left.getEnd().addNext(right.getBegin());
- right.getEnd().addNext(fon);
- return new NodePair(left.getBegin(),fon);
- }
-
- private NodePair flattenExpressionNode(ExpressionNode en, TempDescriptor out_temp) {
- switch(en.kind()) {
- case Kind.AssignmentNode:
- return flattenAssignmentNode((AssignmentNode)en,out_temp);
- case Kind.CastNode:
- return flattenCastNode((CastNode)en,out_temp);
- case Kind.CreateObjectNode:
- return flattenCreateObjectNode((CreateObjectNode)en,out_temp);
- case Kind.FieldAccessNode:
- return flattenFieldAccessNode((FieldAccessNode)en,out_temp);
- case Kind.ArrayAccessNode:
- return flattenArrayAccessNode((ArrayAccessNode)en,out_temp);
- case Kind.LiteralNode:
- return flattenLiteralNode((LiteralNode)en,out_temp);
- case Kind.MethodInvokeNode:
- return flattenMethodInvokeNode((MethodInvokeNode)en,out_temp);
- case Kind.NameNode:
- return flattenNameNode((NameNode)en,out_temp);
- case Kind.OpNode:
- return flattenOpNode((OpNode)en,out_temp);
- }
- throw new Error();
- }
-
- private NodePair flattenDeclarationNode(DeclarationNode dn) {
- VarDescriptor vd=dn.getVarDescriptor();
- TempDescriptor td=getTempforVar(vd);
- if (dn.getExpression()!=null)
- return flattenExpressionNode(dn.getExpression(),td);
- else {
- FlatNop fn=new FlatNop();
- return new NodePair(fn,fn);
- }
- }
-
- private NodePair flattenTagDeclarationNode(TagDeclarationNode dn) {
- TagVarDescriptor tvd=dn.getTagVarDescriptor();
- TagDescriptor tag=tvd.getTag();
- TempDescriptor tmp=getTempforVar(tvd);
- FlatTagDeclaration ftd=new FlatTagDeclaration(tag, tmp);
- return new NodePair(ftd,ftd);
- }
-
- private TempDescriptor getTempforParam(Descriptor d) {
- if (temptovar.containsKey(d))
- return (TempDescriptor)temptovar.get(d);
- else {
- if (d instanceof VarDescriptor) {
- VarDescriptor vd=(VarDescriptor)d;
- TempDescriptor td=TempDescriptor.paramtempFactory(vd.getName(),vd.getType());
- temptovar.put(vd,td);
- return td;
- } else if (d instanceof TagVarDescriptor) {
- TagVarDescriptor tvd=(TagVarDescriptor)d;
- TypeDescriptor tagtype=new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass));
- TempDescriptor td=TempDescriptor.paramtempFactory(tvd.getName(), tagtype, tvd.getTag());
- temptovar.put(tvd,td);
- return td;
- } else throw new Error("Unreconized Descriptor");
- }
- }
-
- private TempDescriptor getTempforVar(Descriptor d) {
- if (temptovar.containsKey(d))
- return (TempDescriptor)temptovar.get(d);
- else {
- if (d instanceof VarDescriptor) {
- VarDescriptor vd=(VarDescriptor)d;
- TempDescriptor td=TempDescriptor.tempFactory(vd.getName(), vd.getType());
- temptovar.put(vd,td);
- return td;
- } else if (d instanceof TagVarDescriptor) {
- TagVarDescriptor tvd=(TagVarDescriptor)d;
- //BUGFIX TAGTYPE - add next line, modify following
- //line to tag this new type descriptor, modify
- //TempDescriptor constructor & factory to set type
- //using this Type To test, use any program with tags
- TypeDescriptor tagtype=new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass));
- TempDescriptor td=TempDescriptor.tempFactory(tvd.getName(),tagtype, tvd.getTag());
- temptovar.put(tvd,td);
- return td;
- } else throw new Error("Unrecognized Descriptor");
- }
- }
-
- private NodePair flattenIfStatementNode(IfStatementNode isn) {
- TempDescriptor cond_temp=TempDescriptor.tempFactory("condition",new TypeDescriptor(TypeDescriptor.BOOLEAN));
- NodePair cond=flattenExpressionNode(isn.getCondition(),cond_temp);
- FlatCondBranch fcb=new FlatCondBranch(cond_temp);
- NodePair true_np=flattenBlockNode(isn.getTrueBlock());
- NodePair false_np;
- FlatNop nopend=new FlatNop();
-
- if (isn.getFalseBlock()!=null)
- false_np=flattenBlockNode(isn.getFalseBlock());
- else {
- FlatNop nop=new FlatNop();
- false_np=new NodePair(nop,nop);
- }
-
- cond.getEnd().addNext(fcb);
- fcb.addTrueNext(true_np.getBegin());
- fcb.addFalseNext(false_np.getBegin());
- true_np.getEnd().addNext(nopend);
- false_np.getEnd().addNext(nopend);
- return new NodePair(cond.getBegin(), nopend);
- }
-
- private NodePair flattenLoopNode(LoopNode ln) {
- if (ln.getType()==LoopNode.FORLOOP) {
- NodePair initializer=flattenBlockNode(ln.getInitializer());
- TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
- NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
- NodePair update=flattenBlockNode(ln.getUpdate());
- NodePair body=flattenBlockNode(ln.getBody());
- FlatNode begin=initializer.getBegin();
- FlatCondBranch fcb=new FlatCondBranch(cond_temp);
- FlatNop nopend=new FlatNop();
- FlatBackEdge backedge=new FlatBackEdge();
-
- initializer.getEnd().addNext(condition.getBegin());
- body.getEnd().addNext(update.getBegin());
- update.getEnd().addNext(backedge);
- backedge.addNext(condition.getBegin());
- condition.getEnd().addNext(fcb);
- fcb.addFalseNext(nopend);
- fcb.addTrueNext(body.getBegin());
- return new NodePair(begin,nopend);
- } else if (ln.getType()==LoopNode.WHILELOOP) {
- TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
- NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
- NodePair body=flattenBlockNode(ln.getBody());
- FlatNode begin=condition.getBegin();
- FlatCondBranch fcb=new FlatCondBranch(cond_temp);
- FlatNop nopend=new FlatNop();
- FlatBackEdge backedge=new FlatBackEdge();
-
- body.getEnd().addNext(backedge);
- backedge.addNext(condition.getBegin());
-
- condition.getEnd().addNext(fcb);
- fcb.addFalseNext(nopend);
- fcb.addTrueNext(body.getBegin());
- return new NodePair(begin,nopend);
- } else if (ln.getType()==LoopNode.DOWHILELOOP) {
- TempDescriptor cond_temp=TempDescriptor.tempFactory("condition", new TypeDescriptor(TypeDescriptor.BOOLEAN));
- NodePair condition=flattenExpressionNode(ln.getCondition(),cond_temp);
- NodePair body=flattenBlockNode(ln.getBody());
- FlatNode begin=body.getBegin();
- FlatCondBranch fcb=new FlatCondBranch(cond_temp);
- FlatNop nopend=new FlatNop();
- FlatBackEdge backedge=new FlatBackEdge();
-
- body.getEnd().addNext(condition.getBegin());
- condition.getEnd().addNext(fcb);
- fcb.addFalseNext(nopend);
- fcb.addTrueNext(backedge);
- backedge.addNext(body.getBegin());
- return new NodePair(begin,nopend);
- } else throw new Error();
- }
-
- private NodePair flattenReturnNode(ReturnNode rntree) {
- TempDescriptor retval=null;
- NodePair cond=null;
- if (rntree.getReturnExpression()!=null) {
- retval=TempDescriptor.tempFactory("ret_value", rntree.getReturnExpression().getType());
- cond=flattenExpressionNode(rntree.getReturnExpression(),retval);
- }
-
- FlatReturnNode rnflat=new FlatReturnNode(retval);
- FlatNode ln=rnflat;
- if (state.THREAD&&currmd.getModifiers().isSynchronized()) {
- MethodDescriptor memd=(MethodDescriptor)typeutil.getClass("Object").getMethodTable().get("MonitorExit");
- TempDescriptor thistd=getTempforVar(currmd.getThis());
- FlatCall fc=new FlatCall(memd, null, thistd, new TempDescriptor[0]);
- fc.addNext(rnflat);
- ln=fc;
- }
-
- if (cond!=null) {
- cond.getEnd().addNext(ln);
- return new NodePair(cond.getBegin(),rnflat);
- } else
- return new NodePair(ln,rnflat);
- }
-
- private NodePair flattenTaskExitNode(TaskExitNode ten) {
- FlatFlagActionNode ffan=new FlatFlagActionNode(FlatFlagActionNode.TASKEXIT);
- updateFlagActionNode(ffan, ten.getFlagEffects());
- NodePair fcn=flattenConstraintCheck(ten.getChecks());
- ffan.addNext(fcn.getBegin());
- FlatReturnNode rnflat=new FlatReturnNode(null);
- fcn.getEnd().addNext(rnflat);
- return new NodePair(ffan, rnflat);
- }
-
- private NodePair flattenConstraintCheck(Vector ccs) {
- FlatNode begin=new FlatNop();
- if (ccs==null)
- return new NodePair(begin,begin);
- FlatNode last=begin;
- for(int i=0;i<ccs.size();i++) {
- ConstraintCheck cc=(ConstraintCheck) ccs.get(i);
- /* Flatten the arguments */
- TempDescriptor[] temps=new TempDescriptor[cc.numArgs()];
- String[] vars=new String[cc.numArgs()];
- for(int j=0;j<cc.numArgs();j++) {
- ExpressionNode en=cc.getArg(j);
- TempDescriptor td=TempDescriptor.tempFactory("arg",en.getType());
- temps[j]=td;
- vars[j]=cc.getVar(j);
- NodePair np=flattenExpressionNode(en, td);
- last.addNext(np.getBegin());
- last=np.getEnd();
- }
-
- FlatCheckNode fcn=new FlatCheckNode(cc.getSpec(), vars, temps);
- last.addNext(fcn);
- last=fcn;
- }
- return new NodePair(begin,last);
- }
-
- private NodePair flattenSubBlockNode(SubBlockNode sbn) {
- return flattenBlockNode(sbn.getBlockNode());
- }
-
- private NodePair flattenAtomicNode(AtomicNode sbn) {
- NodePair np=flattenBlockNode(sbn.getBlockNode());
- FlatAtomicEnterNode faen=new FlatAtomicEnterNode();
- FlatAtomicExitNode faexn=new FlatAtomicExitNode();
- faen.addNext(np.getBegin());
- np.getEnd().addNext(faexn);
- return new NodePair(faen, faexn);
- }
-
- private NodePair flattenBlockStatementNode(BlockStatementNode bsn) {
- switch(bsn.kind()) {
- case Kind.BlockExpressionNode:
- return flattenBlockExpressionNode((BlockExpressionNode)bsn);
-
- case Kind.DeclarationNode:
- return flattenDeclarationNode((DeclarationNode)bsn);
-
- case Kind.TagDeclarationNode:
- return flattenTagDeclarationNode((TagDeclarationNode)bsn);
-
- case Kind.IfStatementNode:
- return flattenIfStatementNode((IfStatementNode)bsn);
-
- case Kind.LoopNode:
- return flattenLoopNode((LoopNode)bsn);
-
- case Kind.ReturnNode:
- return flattenReturnNode((IR.Tree.ReturnNode)bsn);
-
- case Kind.TaskExitNode:
- return flattenTaskExitNode((IR.Tree.TaskExitNode)bsn);
-
- case Kind.SubBlockNode:
- return flattenSubBlockNode((SubBlockNode)bsn);
-
- case Kind.AtomicNode:
- return flattenAtomicNode((AtomicNode)bsn);
-
- }
- throw new Error();
- }
-}
projects / IRC.git / blobdiff