Examples with GotoExpression de.mirkosertic.bytecoder.ssa.GotoExpression used on opensource projects

Example 6 with GotoExpression

use of de.mirkosertic.bytecoder.ssa.GotoExpression in project Bytecoder by mirkosertic.

the class WASMSSAWriter method writeExpression.

private void writeExpression(Expression aExpression) {
    if (options.isDebugOutput()) {
        String theComment = aExpression.getComment();
        if (theComment != null && !theComment.isEmpty()) {
            print(";; ");
            println(theComment);
        }
    }
    if (aExpression instanceof CheckCastExpression) {
        return;
    }
    if (aExpression instanceof ReturnExpression) {
        writeReturnExpression((ReturnExpression) aExpression);
        return;
    }
    if (aExpression instanceof VariableAssignmentExpression) {
        writeInitVariableExpression((VariableAssignmentExpression) aExpression);
        return;
    }
    if (aExpression instanceof DirectInvokeMethodExpression) {
        writeDirectMethodInvokeExpression((DirectInvokeMethodExpression) aExpression);
        return;
    }
    if (aExpression instanceof IFExpression) {
        writeIFExpression((IFExpression) aExpression);
        return;
    }
    if (aExpression instanceof GotoExpression) {
        writeGotoExpression((GotoExpression) aExpression);
        return;
    }
    if (aExpression instanceof ReturnValueExpression) {
        writeReturnExpression((ReturnValueExpression) aExpression);
        return;
    }
    if (aExpression instanceof PutFieldExpression) {
        writePutFieldExpression((PutFieldExpression) aExpression);
        return;
    }
    if (aExpression instanceof SetMemoryLocationExpression) {
        writeSetMemoryLocationExpression((SetMemoryLocationExpression) aExpression);
        return;
    }
    if (aExpression instanceof PutStaticExpression) {
        writePutStaticExpression((PutStaticExpression) aExpression);
        return;
    }
    if (aExpression instanceof InvokeStaticMethodExpression) {
        writeInvokeStaticExpression((InvokeStaticMethodExpression) aExpression);
        return;
    }
    if (aExpression instanceof ThrowExpression) {
        writeThrowExpression((ThrowExpression) aExpression);
        return;
    }
    if (aExpression instanceof ArrayStoreExpression) {
        writeArrayStoreExpression((ArrayStoreExpression) aExpression);
        return;
    }
    if (aExpression instanceof InvokeVirtualMethodExpression) {
        writeInvokeVirtualExpression((InvokeVirtualMethodExpression) aExpression);
        return;
    }
    if (aExpression instanceof TableSwitchExpression) {
        writeTableSwitchExpression((TableSwitchExpression) aExpression);
        return;
    }
    if (aExpression instanceof LookupSwitchExpression) {
        writeLookupSwitchExpression((LookupSwitchExpression) aExpression);
        return;
    }
    if (aExpression instanceof UnreachableExpression) {
        writeUnreachable((UnreachableExpression) aExpression);
        return;
    }
    if (aExpression instanceof BreakExpression) {
        BreakExpression theBreak = (BreakExpression) aExpression;
        if (theBreak.isSetLabelRequired()) {
            print("(set_local $__label__ (i32.const ");
            print(theBreak.jumpTarget().getAddress());
            println("))");
        }
        if (!theBreak.isSilent()) {
            print("(br $");
            print(theBreak.blockToBreak().name());
            println(")");
        }
        return;
    }
    if (aExpression instanceof ContinueExpression) {
        ContinueExpression theContinue = (ContinueExpression) aExpression;
        print("(set_local $__label__ (i32.const ");
        print(theContinue.jumpTarget().getAddress());
        println("))");
        print("(br $");
        print(theContinue.labelToReturnTo().name());
        println("_inner)");
        return;
    }
    throw new IllegalStateException("Not supported : " + aExpression);
}

Example 7 with GotoExpression

use of de.mirkosertic.bytecoder.ssa.GotoExpression in project Bytecoder by mirkosertic.

the class InlineFinalNodesOptimizer method inline.

private void inline(Map<BytecodeOpcodeAddress, RegionNode> aFinalNodes, ExpressionList aList) {
    for (Expression theExpression : aList.toList()) {
        if (theExpression instanceof ExpressionListContainer) {
            ExpressionListContainer theContainer = (ExpressionListContainer) theExpression;
            for (ExpressionList theList : theContainer.getExpressionLists()) {
                inline(aFinalNodes, theList);
            }
        }
        if (theExpression instanceof GotoExpression) {
            GotoExpression theGoto = (GotoExpression) theExpression;
            RegionNode thePotentialFinal = aFinalNodes.get(theGoto.getJumpTarget());
            if (thePotentialFinal != null) {
                aList.replace(theExpression, thePotentialFinal.getExpressions());
            }
        }
    }
}

Example 8 with GotoExpression

use of de.mirkosertic.bytecoder.ssa.GotoExpression in project Bytecoder by mirkosertic.

the class InlineGotoOptimizer method performNodeInlining.

private boolean performNodeInlining(ControlFlowGraph aGraph, RegionNode aNode, ExpressionList aList, List<BytecodeOpcodeAddress> aJumpTargets) {
    for (Expression theExpression : aList.toList()) {
        if (theExpression instanceof ExpressionListContainer) {
            ExpressionListContainer theContainer = (ExpressionListContainer) theExpression;
            for (ExpressionList theList : theContainer.getExpressionLists()) {
                if (performNodeInlining(aGraph, aNode, theList, aJumpTargets)) {
                    return true;
                }
            }
        }
        if (theExpression instanceof GotoExpression) {
            GotoExpression theGOTO = (GotoExpression) theExpression;
            RegionNode theTargetNode = aGraph.nodeStartingAt(theGOTO.getJumpTarget());
            if (theTargetNode.isStrictlyDominatedBy(aNode)) {
                BytecodeOpcodeAddress theJumpTarget = theGOTO.getJumpTarget();
                int theCount = 0;
                for (BytecodeOpcodeAddress theEntry : aJumpTargets) {
                    if (theEntry.equals(theJumpTarget)) {
                        theCount++;
                    }
                }
                if (theCount == 1) {
                    // Node can be inlined
                    aGraph.delete(theTargetNode);
                    aList.replace(theGOTO, theTargetNode.getExpressions());
                    aNode.inheritSuccessorsOf(theTargetNode);
                    for (RegionNode theNode : aGraph.getKnownNodes()) {
                        recomputeGotos(theNode.getExpressions(), theTargetNode.getStartAddress(), aNode.getStartAddress());
                    }
                    return true;
                }
            }
        }
    }
    return false;
}

Example 9 with GotoExpression

use of de.mirkosertic.bytecoder.ssa.GotoExpression in project Bytecoder by mirkosertic.

the class InlineGotoOptimizer method recomputeGotos.

private void recomputeGotos(ExpressionList aList, BytecodeOpcodeAddress aOriginal, BytecodeOpcodeAddress aNew) {
    for (Expression theExpression : aList.toList()) {
        if (theExpression instanceof ExpressionListContainer) {
            ExpressionListContainer theContainer = (ExpressionListContainer) theExpression;
            for (ExpressionList theList : theContainer.getExpressionLists()) {
                recomputeGotos(theList, aOriginal, aNew);
            }
        }
        if (theExpression instanceof GotoExpression) {
            GotoExpression theGoto = (GotoExpression) theExpression;
            if (Objects.equals(theGoto.getJumpTarget(), aOriginal)) {
                GotoExpression theNewGoto = new GotoExpression(aNew);
                aList.replace(theGoto, theNewGoto);
            }
        }
    }
}

Example 10 with GotoExpression

use of de.mirkosertic.bytecoder.ssa.GotoExpression in project Bytecoder by mirkosertic.

the class JSSSAWriter method writeExpressions.

private void writeExpressions(ExpressionList aExpressions) {
    for (Expression theExpression : aExpressions.toList()) {
        if (options.isDebugOutput()) {
            String theComment = theExpression.getComment();
            if (theComment != null && !theComment.isEmpty()) {
                print("// ");
                println(theComment);
            }
        }
        if (theExpression instanceof ReturnExpression) {
            ReturnExpression theE = (ReturnExpression) theExpression;
            print("return");
            println(";");
        } else if (theExpression instanceof VariableAssignmentExpression) {
            VariableAssignmentExpression theE = (VariableAssignmentExpression) theExpression;
            Variable theVariable = theE.getVariable();
            Value theValue = theE.getValue();
            if (theValue instanceof ComputedMemoryLocationWriteExpression) {
                continue;
            }
            if (!program.isGlobalVariable(theVariable)) {
                print("var ");
            }
            print(theVariable.getName());
            print(" = ");
            print(theValue);
            print("; // type is ");
            println(theVariable.resolveType().resolve().name() + " value type is " + theValue.resolveType());
        } else if (theExpression instanceof PutStaticExpression) {
            PutStaticExpression theE = (PutStaticExpression) theExpression;
            BytecodeFieldRefConstant theField = theE.getField();
            Value theValue = theE.incomingDataFlows().get(0);
            printStaticFieldReference(theField);
            print(" = ");
            print(theValue);
            println(";");
        } else if (theExpression instanceof ReturnValueExpression) {
            ReturnValueExpression theE = (ReturnValueExpression) theExpression;
            Value theValue = theE.incomingDataFlows().get(0);
            print("return ");
            print(theValue);
            println(";");
        } else if (theExpression instanceof ThrowExpression) {
            ThrowExpression theE = (ThrowExpression) theExpression;
            Value theValue = theE.incomingDataFlows().get(0);
            print("throw ");
            print(theValue);
            println(";");
        } else if (theExpression instanceof InvokeVirtualMethodExpression) {
            InvokeVirtualMethodExpression theE = (InvokeVirtualMethodExpression) theExpression;
            print(theE);
            println(";");
        } else if (theExpression instanceof DirectInvokeMethodExpression) {
            DirectInvokeMethodExpression theE = (DirectInvokeMethodExpression) theExpression;
            print(theE);
            println(";");
        } else if (theExpression instanceof InvokeStaticMethodExpression) {
            InvokeStaticMethodExpression theE = (InvokeStaticMethodExpression) theExpression;
            print(theE);
            println(";");
        } else if (theExpression instanceof PutFieldExpression) {
            PutFieldExpression theE = (PutFieldExpression) theExpression;
            List<Value> theIncomingData = theE.incomingDataFlows();
            Value theTarget = theIncomingData.get(0);
            BytecodeFieldRefConstant theField = theE.getField();
            Value thevalue = theIncomingData.get(1);
            print(theTarget);
            printInstanceFieldReference(theField);
            print(" = ");
            print(thevalue);
            println(";");
        } else if (theExpression instanceof IFExpression) {
            IFExpression theE = (IFExpression) theExpression;
            print("if (");
            print(theE.incomingDataFlows().get(0));
            println(") {");
            withDeeperIndent().writeExpressions(theE.getExpressions());
            println("}");
        } else if (theExpression instanceof GotoExpression) {
            GotoExpression theE = (GotoExpression) theExpression;
            println(generateJumpCodeFor(theE.getJumpTarget()));
        } else if (theExpression instanceof ArrayStoreExpression) {
            ArrayStoreExpression theE = (ArrayStoreExpression) theExpression;
            List<Value> theIncomingData = theE.incomingDataFlows();
            Value theArray = theIncomingData.get(0);
            Value theIndex = theIncomingData.get(1);
            Value theValue = theIncomingData.get(2);
            print(theArray);
            printArrayIndexReference(theIndex);
            print(" = ");
            print(theValue);
            println(";");
        } else if (theExpression instanceof CheckCastExpression) {
            CheckCastExpression theE = (CheckCastExpression) theExpression;
        // Completely ignored
        } else if (theExpression instanceof TableSwitchExpression) {
            TableSwitchExpression theE = (TableSwitchExpression) theExpression;
            Value theValue = theE.incomingDataFlows().get(0);
            print("if (");
            print(theValue);
            print(" < ");
            print(theE.getLowValue());
            print(" || ");
            print(theValue);
            print(" > ");
            print(theE.getHighValue());
            println(") {");
            print(" ");
            writeExpressions(theE.getDefaultExpressions());
            println("}");
            print("switch(");
            print(theValue);
            print(" - ");
            print(theE.getLowValue());
            println(") {");
            for (Map.Entry<Long, ExpressionList> theEntry : theE.getOffsets().entrySet()) {
                print(" case ");
                print(theEntry.getKey());
                println(":");
                print("     ");
                writeExpressions(theEntry.getValue());
            }
            println("}");
            println("throw 'Illegal jump target!';");
        } else if (theExpression instanceof LookupSwitchExpression) {
            LookupSwitchExpression theE = (LookupSwitchExpression) theExpression;
            print("switch(");
            print(theE.incomingDataFlows().get(0));
            println(") {");
            for (Map.Entry<Long, ExpressionList> theEntry : theE.getPairs().entrySet()) {
                print(" case ");
                print(theEntry.getKey());
                println(":");
                print("     ");
                writeExpressions(theEntry.getValue());
            }
            println("}");
            writeExpressions(theE.getDefaultExpressions());
        } else if (theExpression instanceof SetMemoryLocationExpression) {
            SetMemoryLocationExpression theE = (SetMemoryLocationExpression) theExpression;
            List<Value> theIncomingData = theE.incomingDataFlows();
            print("bytecoderGlobalMemory[");
            ComputedMemoryLocationWriteExpression theValue = (ComputedMemoryLocationWriteExpression) theIncomingData.get(0);
            print(theValue);
            print("] = ");
            print(theIncomingData.get(1));
            println(";");
        } else if (theExpression instanceof UnreachableExpression) {
            println("throw 'Unreachable';");
        } else if (theExpression instanceof BreakExpression) {
            BreakExpression theBreak = (BreakExpression) theExpression;
            if (theBreak.isSetLabelRequired()) {
                print("__label__ = ");
                print(theBreak.jumpTarget().getAddress());
                println(";");
            }
            if (!theBreak.isSilent()) {
                print("break $");
                print(theBreak.blockToBreak().name());
                println(";");
            }
        } else if (theExpression instanceof ContinueExpression) {
            ContinueExpression theContinue = (ContinueExpression) theExpression;
            print("__label__ = ");
            print(theContinue.jumpTarget().getAddress());
            println(";");
            print("continue $");
            print(theContinue.labelToReturnTo().name());
            println(";");
        } else {
            throw new IllegalStateException("Not implemented : " + theExpression);
        }
    }
}