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Java Source Code / Java Documentation » Database DBMS » db4o 6.4 » EDU.purdue.cs.bloat.codegen   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    EDU.purdue.cs.bloat.tree.TreeVisitor       EDU.purdue.cs.bloat.codegen.CodeGenerator CodeGenerator public class CodeGenerator extends TreeVisitor implements Opcode(Code) CodeGenerator performs some final optimizations and is used (via a visitor) to generate bytecode for the contents of a control flow graph. See Also:   FlowGraph Field Summary public static  boolean DB_OPT_STACK      public static  boolean DEBUG      public static  boolean OPT_STACK      public static  boolean USE_PERSISTENT       StackOptimizer currentSO      protected  MethodEditor method      protected  Block next      public  boolean nowb      protected  Map postponedInstructions      protected  int stackHeight      protected  Set visited      Constructor Summary public   CodeGenerator(MethodEditor method)      Constructor. Method Summary public  void allocReturnAddresses(FlowGraph cfg, RegisterAllocator alloc)      Allocate "registers" (LocalVariables) for the return addresses for each subroutine in the method. protected  Stmt createStore(VarExpr target, Expr source)      Returns an ExprStmt that contains a store of the source into the target. protected  Stmt createUndefinedStore(VarExpr target)      Create a ExprStmt that initializes a target variable to a default value based on the type of the target. public  void replacePhis(FlowGraph cfg)      Replace PhiStmts with copies that accomplish what the PhiStmts represent. public  void simplifyControlFlow(FlowGraph cfg)      Simplifies the control flow of a method by changing jump and return statements into gotos where appropriate. public  void visitAddressStoreStmt(AddressStoreStmt stmt)      public  void visitArithExpr(ArithExpr expr)      public  void visitArrayLengthExpr(ArrayLengthExpr expr)      public  void visitArrayRefExpr(ArrayRefExpr expr)      public  void visitCallMethodExpr(CallMethodExpr expr)      public  void visitCallStaticExpr(CallStaticExpr expr)      public  void visitCastExpr(CastExpr expr)      public  void visitCatchExpr(CatchExpr expr)      public  void visitConstantExpr(ConstantExpr expr)      public  void visitDefExpr(DefExpr expr)      public  void visitExpr(Expr expr)      public  void visitExprStmt(ExprStmt stmt)      public  void visitFieldExpr(FieldExpr expr)      public  void visitFlowGraph(FlowGraph cfg)      Visits the nodes in the method's control flow graph and ensures that information about the method's basic blocks is consistent and correct. public  void visitGotoStmt(GotoStmt stmt)      public  void visitIfCmpStmt(IfCmpStmt stmt)      public  void visitIfZeroStmt(IfZeroStmt stmt)      public  void visitInitStmt(InitStmt stmt)      public  void visitInstanceOfExpr(InstanceOfExpr expr)      public  void visitJsrStmt(JsrStmt stmt)      public  void visitLabelStmt(LabelStmt stmt)      public  void visitLocalExpr(LocalExpr expr)      public  void visitMonitorStmt(MonitorStmt stmt)      public  void visitNegExpr(NegExpr expr)      public  void visitNewArrayExpr(NewArrayExpr expr)      public  void visitNewExpr(NewExpr expr)      public  void visitNewMultiArrayExpr(NewMultiArrayExpr expr)      public  void visitPhiStmt(PhiStmt stmt)      public  void visitRCExpr(RCExpr expr)      public  void visitRetStmt(RetStmt stmt)      public  void visitReturnAddressExpr(ReturnAddressExpr expr)      public  void visitReturnExprStmt(ReturnExprStmt stmt)      public  void visitReturnStmt(ReturnStmt stmt)      public  void visitSCStmt(SCStmt stmt)      public  void visitSRStmt(SRStmt stmt)      public  void visitShiftExpr(ShiftExpr expr)      public  void visitStackExpr(StackExpr expr)      public  void visitStackManipStmt(StackManipStmt stmt)      public  void visitStaticFieldExpr(StaticFieldExpr expr)      public  void visitStoreExpr(StoreExpr expr)      public  void visitSwitchStmt(SwitchStmt stmt)      public  void visitThrowStmt(ThrowStmt stmt)      public  void visitUCExpr(UCExpr expr)      public  void visitZeroCheckExpr(ZeroCheckExpr expr)      Field Detail DB_OPT_STACK public static boolean DB_OPT_STACK(Code) DEBUG public static boolean DEBUG(Code) OPT_STACK public static boolean OPT_STACK(Code) Use information about placement of local variables to eliminate loads and stores in favor of stack manipulations USE_PERSISTENT public static boolean USE_PERSISTENT(Code) currentSO StackOptimizer currentSO(Code) method protected MethodEditor method(Code) next protected Block next(Code) nowb public boolean nowb(Code) postponedInstructions protected Map postponedInstructions(Code) stackHeight protected int stackHeight(Code) visited protected Set visited(Code) Constructor Detail CodeGenerator public CodeGenerator(MethodEditor method)(Code) Constructor. Parameters:   method - The method for which bytecode is generated. Method Detail allocReturnAddresses public void allocReturnAddresses(FlowGraph cfg, RegisterAllocator alloc)(Code) Allocate "registers" (LocalVariables) for the return addresses for each subroutine in the method. Parameters:   cfg - Control flow graph for the method Parameters:   alloc - Allocation (and information about) the local variables in themethod. See Also:   LocalVariable See Also:   LocalExpr createStore protected Stmt createStore(VarExpr target, Expr source)(Code) Returns an ExprStmt that contains a store of the source into the target. createUndefinedStore protected Stmt createUndefinedStore(VarExpr target)(Code) Create a ExprStmt that initializes a target variable to a default value based on the type of the target. replacePhis public void replacePhis(FlowGraph cfg)(Code) Replace PhiStmts with copies that accomplish what the PhiStmts represent. Then remove the PhiStmts from the control flow graph. simplifyControlFlow public void simplifyControlFlow(FlowGraph cfg)(Code) Simplifies the control flow of a method by changing jump and return statements into gotos where appropriate. visitAddressStoreStmt public void visitAddressStoreStmt(AddressStoreStmt stmt)(Code) visitArithExpr public void visitArithExpr(ArithExpr expr)(Code) visitArrayLengthExpr public void visitArrayLengthExpr(ArrayLengthExpr expr)(Code) visitArrayRefExpr public void visitArrayRefExpr(ArrayRefExpr expr)(Code) visitCallMethodExpr public void visitCallMethodExpr(CallMethodExpr expr)(Code) visitCallStaticExpr public void visitCallStaticExpr(CallStaticExpr expr)(Code) visitCastExpr public void visitCastExpr(CastExpr expr)(Code) visitCatchExpr public void visitCatchExpr(CatchExpr expr)(Code) visitConstantExpr public void visitConstantExpr(ConstantExpr expr)(Code) visitDefExpr public void visitDefExpr(DefExpr expr)(Code) visitExpr public void visitExpr(Expr expr)(Code) visitExprStmt public void visitExprStmt(ExprStmt stmt)(Code) visitFieldExpr public void visitFieldExpr(FieldExpr expr)(Code) visitFlowGraph public void visitFlowGraph(FlowGraph cfg)(Code) Visits the nodes in the method's control flow graph and ensures that information about the method's basic blocks is consistent and correct. Parameters:   cfg - The control flow graph associated with this method. visitGotoStmt public void visitGotoStmt(GotoStmt stmt)(Code) visitIfCmpStmt public void visitIfCmpStmt(IfCmpStmt stmt)(Code) visitIfZeroStmt public void visitIfZeroStmt(IfZeroStmt stmt)(Code) visitInitStmt public void visitInitStmt(InitStmt stmt)(Code) visitInstanceOfExpr public void visitInstanceOfExpr(InstanceOfExpr expr)(Code) visitJsrStmt public void visitJsrStmt(JsrStmt stmt)(Code) visitLabelStmt public void visitLabelStmt(LabelStmt stmt)(Code) visitLocalExpr public void visitLocalExpr(LocalExpr expr)(Code) visitMonitorStmt public void visitMonitorStmt(MonitorStmt stmt)(Code) visitNegExpr public void visitNegExpr(NegExpr expr)(Code) visitNewArrayExpr public void visitNewArrayExpr(NewArrayExpr expr)(Code) visitNewExpr public void visitNewExpr(NewExpr expr)(Code) visitNewMultiArrayExpr public void visitNewMultiArrayExpr(NewMultiArrayExpr expr)(Code) visitPhiStmt public void visitPhiStmt(PhiStmt stmt)(Code) visitRCExpr public void visitRCExpr(RCExpr expr)(Code) visitRetStmt public void visitRetStmt(RetStmt stmt)(Code) visitReturnAddressExpr public void visitReturnAddressExpr(ReturnAddressExpr expr)(Code) visitReturnExprStmt public void visitReturnExprStmt(ReturnExprStmt stmt)(Code) visitReturnStmt public void visitReturnStmt(ReturnStmt stmt)(Code) visitSCStmt public void visitSCStmt(SCStmt stmt)(Code) visitSRStmt public void visitSRStmt(SRStmt stmt)(Code) visitShiftExpr public void visitShiftExpr(ShiftExpr expr)(Code) visitStackExpr public void visitStackExpr(StackExpr expr)(Code) visitStackManipStmt public void visitStackManipStmt(StackManipStmt stmt)(Code) visitStaticFieldExpr public void visitStaticFieldExpr(StaticFieldExpr expr)(Code) visitStoreExpr public void visitStoreExpr(StoreExpr expr)(Code) visitSwitchStmt public void visitSwitchStmt(SwitchStmt stmt)(Code) visitThrowStmt public void visitThrowStmt(ThrowStmt stmt)(Code) visitUCExpr public void visitUCExpr(UCExpr expr)(Code) visitZeroCheckExpr public void visitZeroCheckExpr(ZeroCheckExpr expr)(Code) Fields inherited from EDU.purdue.cs.bloat.tree.TreeVisitor final public static int FORWARD(Code)(Java Doc) final public static int REVERSE(Code)(Java Doc) Methods inherited from EDU.purdue.cs.bloat.tree.TreeVisitor public int direction()(Code)(Java Doc) public boolean forward()(Code)(Java Doc) public boolean prune()(Code)(Java Doc) public boolean reverse()(Code)(Java Doc) public void setPrune(boolean prune)(Code)(Java Doc) public void visitAddressStoreStmt(AddressStoreStmt stmt)(Code)(Java Doc) public void visitArithExpr(ArithExpr expr)(Code)(Java Doc) public void visitArrayLengthExpr(ArrayLengthExpr expr)(Code)(Java Doc) public void visitArrayRefExpr(ArrayRefExpr expr)(Code)(Java Doc) public void visitBlock(Block block)(Code)(Java Doc) public void visitCallExpr(CallExpr expr)(Code)(Java Doc) public void visitCallMethodExpr(CallMethodExpr expr)(Code)(Java Doc) public void visitCallStaticExpr(CallStaticExpr expr)(Code)(Java Doc) public void visitCastExpr(CastExpr expr)(Code)(Java Doc) public void visitCatchExpr(CatchExpr expr)(Code)(Java Doc) public void visitCheckExpr(CheckExpr expr)(Code)(Java Doc) public void visitConstantExpr(ConstantExpr expr)(Code)(Java Doc) public void visitDefExpr(DefExpr expr)(Code)(Java Doc) public void visitExpr(Expr expr)(Code)(Java Doc) public void visitExprStmt(ExprStmt stmt)(Code)(Java Doc) public void visitFieldExpr(FieldExpr expr)(Code)(Java Doc) public void visitFlowGraph(FlowGraph graph)(Code)(Java Doc) public void visitGotoStmt(GotoStmt stmt)(Code)(Java Doc) public void visitIfCmpStmt(IfCmpStmt stmt)(Code)(Java Doc) public void visitIfStmt(IfStmt stmt)(Code)(Java Doc) public void visitIfZeroStmt(IfZeroStmt stmt)(Code)(Java Doc) public void visitInitStmt(InitStmt stmt)(Code)(Java Doc) public void visitInstanceOfExpr(InstanceOfExpr expr)(Code)(Java Doc) public void visitJsrStmt(JsrStmt stmt)(Code)(Java Doc) public void visitLabelStmt(LabelStmt stmt)(Code)(Java Doc) public void visitLocalExpr(LocalExpr expr)(Code)(Java Doc) public void visitMemExpr(MemExpr expr)(Code)(Java Doc) public void visitMemRefExpr(MemRefExpr expr)(Code)(Java Doc) public void visitMonitorStmt(MonitorStmt stmt)(Code)(Java Doc) public void visitNegExpr(NegExpr expr)(Code)(Java Doc) public void visitNewArrayExpr(NewArrayExpr expr)(Code)(Java Doc) public void visitNewExpr(NewExpr expr)(Code)(Java Doc) public void visitNewMultiArrayExpr(NewMultiArrayExpr expr)(Code)(Java Doc) public void visitNode(Node node)(Code)(Java Doc) public void visitPhiCatchStmt(PhiCatchStmt stmt)(Code)(Java Doc) public void visitPhiJoinStmt(PhiJoinStmt stmt)(Code)(Java Doc) public void visitPhiStmt(PhiStmt stmt)(Code)(Java Doc) public void visitRCExpr(RCExpr expr)(Code)(Java Doc) public void visitRetStmt(RetStmt stmt)(Code)(Java Doc) public void visitReturnAddressExpr(ReturnAddressExpr expr)(Code)(Java Doc) public void visitReturnExprStmt(ReturnExprStmt stmt)(Code)(Java Doc) public void visitReturnStmt(ReturnStmt stmt)(Code)(Java Doc) public void visitSCStmt(SCStmt stmt)(Code)(Java Doc) public void visitSRStmt(SRStmt stmt)(Code)(Java Doc) public void visitShiftExpr(ShiftExpr expr)(Code)(Java Doc) public void visitStackExpr(StackExpr expr)(Code)(Java Doc) public void visitStackManipStmt(StackManipStmt stmt)(Code)(Java Doc) public void visitStaticFieldExpr(StaticFieldExpr expr)(Code)(Java Doc) public void visitStmt(Stmt stmt)(Code)(Java Doc) public void visitStoreExpr(StoreExpr expr)(Code)(Java Doc) public void visitSwitchStmt(SwitchStmt stmt)(Code)(Java Doc) public void visitThrowStmt(ThrowStmt stmt)(Code)(Java Doc) public void visitTree(Tree tree)(Code)(Java Doc) public void visitUCExpr(UCExpr expr)(Code)(Java Doc) public void visitVarExpr(VarExpr expr)(Code)(Java Doc) public void visitZeroCheckExpr(ZeroCheckExpr expr)(Code)(Java Doc) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)