mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-12-26 03:32:23 +00:00
Added address-of operator. Working in basic programs. Transience of variables not implemented so there is a risk the variable being referenced is optimized into a constant or removed. Closes #78
This commit is contained in:
jespergravgaard
parent
7343a85b91
commit
623f83a076
@ -40,6 +40,10 @@ public class AsmFormat {
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operator.getOperator() +
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getAsmConstant(program, binary.getRight(), operator.getPrecedence(), codeScope) +
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(parenthesis ? ")" : "");
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} else if(value instanceof ConstantVarPointer) {
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VariableRef toVar = ((ConstantVarPointer) value).getToVar();
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Variable variable = program.getScope().getVariable(toVar);
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return getAsmParamName(variable, codeScope);
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} else {
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throw new RuntimeException("Constant type not supported " + value);
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}
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@ -0,0 +1,31 @@
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package dk.camelot64.kickc.model;
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/** A pointer to a variable */
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public class ConstantVarPointer implements ConstantValue {
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/** The variable pointed to. */
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private VariableRef toVar;
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public ConstantVarPointer(VariableRef toVar) {
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this.toVar = toVar;
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}
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public VariableRef getToVar() {
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return toVar;
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}
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public void setToVar(VariableRef toVar) {
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this.toVar = toVar;
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}
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@Override
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public SymbolType getType(ProgramScope scope) {
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Variable to = scope.getVariable(toVar);
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return new SymbolTypePointer(to.getType());
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}
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@Override
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public String toString(Program program) {
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return "&" + toVar.toString(program);
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}
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}
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@ -12,6 +12,7 @@ public class Operator {
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public static final Operator BOOL_NOT = new Operator("~", "_not_", Type.UNARY, 2);
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public static final Operator LOGIC_NOT = new Operator("!", "_not_", Type.UNARY, 2);
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public static final Operator DEREF = new Operator("*", "_deref_", Type.UNARY, 2);
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public static final Operator ADDRESS_OF = new Operator("&", "_addr_", Type.UNARY, 2);
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public static final Operator WORD = new Operator("w=", "_word_", Type.BINARY, 2);
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public static final Operator DEREF_IDX = new Operator("*idx", "_derefidx_", Type.BINARY, 2);
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public static final Operator SET_LOWBYTE = new Operator("lo=", "_setlo_", Type.BINARY, 2);
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@ -118,6 +119,8 @@ public class Operator {
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return LOWBYTE;
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case ">":
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return HIBYTE;
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case "&":
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return ADDRESS_OF;
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default:
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throw new RuntimeException("Unknown operator " + op);
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}
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@ -32,6 +32,9 @@ public class SymbolTypeInference {
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return SymbolType.SWORD;
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} else if(operator.equals(Operator.CAST_PTRBY)) {
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return new SymbolTypePointer(SymbolType.BYTE);
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} else if(operator.equals(Operator.ADDRESS_OF)) {
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SymbolType valueType = inferType(programScope, rValue);
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return new SymbolTypePointer(valueType);
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}
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if(rValue instanceof ConstantValue) {
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ConstantValue value = ConstantValueCalculator.calcValue(programScope, operator, (ConstantValue) rValue);
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@ -323,6 +326,8 @@ public class SymbolTypeInference {
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return new SymbolTypeArray(((ConstantArrayList) rValue).getElementType());
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} else if(rValue instanceof ConstantArrayFilled) {
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return new SymbolTypeArray(((ConstantArrayFilled) rValue).getElementType(), ((ConstantArrayFilled) rValue).getSize());
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} else if(rValue instanceof ConstantVarPointer) {
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return ((ConstantVarPointer) rValue).getType(symbols);
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} else if(rValue instanceof CastValue) {
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return ((CastValue) rValue).getToType();
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}
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@ -9,9 +9,6 @@ import java.util.Map;
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/** Cached information about which variables are defined/referenced/used in statements / blocks. */
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public class VariableReferenceInfos {
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/** The congtaining program. */
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private Program program;
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/** Variables referenced in each block. */
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private Map<LabelRef, Collection<VariableRef>> blockReferencedVars;
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@ -158,6 +158,11 @@ public class Pass2ConstantIdentification extends Pass2SsaOptimization {
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}
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}
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}
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} else if(Operator.ADDRESS_OF.equals(assignment.getOperator()) && assignment.getrValue1()==null) {
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if(assignment.getrValue2() instanceof VariableRef) {
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ConstantVarPointer constantVarPointer = new ConstantVarPointer((VariableRef) assignment.getrValue2());
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constants.put(variable, constantVarPointer);
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}
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}
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}
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return null;
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@ -2,7 +2,9 @@ package dk.camelot64.kickc.passes;
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import dk.camelot64.kickc.model.*;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.List;
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/*** Initialize potential registers for each equivalence class.
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@ -40,19 +42,41 @@ public class Pass4RegisterUpliftPotentialInitialize extends Pass2Base {
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} else {
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Registers.Register defaultRegister = equivalenceClass.getRegister();
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Registers.RegisterType registerType = defaultRegister.getType();
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if(registerType.equals(Registers.RegisterType.ZP_BYTE)) {
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List<Registers.Register> potentials = Arrays.asList(
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defaultRegister,
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Registers.getRegisterA(),
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Registers.getRegisterX(),
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Registers.getRegisterY());
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registerPotentials.setPotentialRegisters(equivalenceClass, potentials);
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} else {
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registerPotentials.setPotentialRegisters(equivalenceClass, Arrays.asList(defaultRegister));
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List<Registers.Register> potentials = new ArrayList<>();
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potentials.add(defaultRegister);
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if(registerType.equals(Registers.RegisterType.ZP_BYTE) && !varRefExtracted(equivalenceClass)) {
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potentials.add(Registers.getRegisterA());
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potentials.add(Registers.getRegisterX());
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potentials.add(Registers.getRegisterY());
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}
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registerPotentials.setPotentialRegisters(equivalenceClass, potentials);
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}
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}
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getProgram().setRegisterPotentials(registerPotentials);
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}
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/**
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* Determines if a variable reference is ever created for the variable using the address-of "&" operator
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* @param equivalenceClass The equivalence class
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* @return true if a variable reference is extracted
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*/
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private boolean varRefExtracted(LiveRangeEquivalenceClass equivalenceClass) {
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Collection<ConstantVar> allConstants = getProgram().getScope().getAllConstants(true);
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for(ConstantVar allConstant : allConstants) {
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if(allConstant.getValue() instanceof ConstantVarPointer) {
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VariableRef toVar = ((ConstantVarPointer) allConstant.getValue()).getToVar();
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if(equivalenceClass.getVariables().contains(toVar)) {
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return true;
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}
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}
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}
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return false;
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}
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private boolean hasIntersection(Collection<VariableRef> vars1, List<VariableRef> vars2) {
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ArrayList<VariableRef> set = new ArrayList<>(vars1);
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set.retainAll(vars2);
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return set.size() > 0;
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}
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}
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@ -96,6 +96,8 @@ public class PassNVariableReferenceInfos extends Pass2Base {
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return used;
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} else if(rValue instanceof CastValue) {
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return getReferenced(((CastValue) rValue).getValue());
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} else if(rValue instanceof ConstantVarPointer) {
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return getReferenced(((ConstantVarPointer) rValue).getToVar());
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} else {
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throw new RuntimeException("Unhandled RValue type " + rValue);
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}
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@ -105,6 +105,8 @@ public class ValueReplacer {
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}
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} else if(value instanceof CastValue) {
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subValues.add(new ReplaceableCastValue((CastValue) value));
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} else if(value instanceof ConstantVarPointer) {
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subValues.add(new ReplaceableVarPointer((ConstantVarPointer) value));
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}
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return subValues;
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}
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@ -178,6 +180,28 @@ public class ValueReplacer {
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}
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/**
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* Replaceable pointer inside a variable pointer.
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*/
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public static class ReplaceableVarPointer extends ReplaceableValue {
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private final ConstantVarPointer varPointer;
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public ReplaceableVarPointer(ConstantVarPointer varPointer) {
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this.varPointer = varPointer;
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}
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@Override
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public RValue get() {
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return varPointer.getToVar();
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}
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@Override
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public void set(RValue val) {
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varPointer.setToVar((VariableRef) val);
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}
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}
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public static class ReplaceableListElement extends ReplaceableValue {
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private ValueList list;
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@ -42,6 +42,11 @@ public class TestPrograms {
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AsmFragmentTemplateUsages.logUsages(log, false, false, false, false, false, false);
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}
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@Test
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public void testAddressOf() throws IOException, URISyntaxException {
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compileAndCompare("test-address-of");
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}
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@Test
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public void testDivision() throws IOException, URISyntaxException {
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compileAndCompare("test-division");
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10
src/test/java/dk/camelot64/kickc/test/kc/test-address-of.kc
Normal file
10
src/test/java/dk/camelot64/kickc/test/kc/test-address-of.kc
Normal file
@ -0,0 +1,10 @@
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void main() {
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byte* SCREEN = $400;
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for( byte b: 0..10) {
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byte* bp = &b;
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byte c = *bp +1;
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SCREEN[b] = c;
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}
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}
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@ -0,0 +1,22 @@
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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jsr main
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main: {
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.label SCREEN = $400
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.label bp = b
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.label b = 2
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lda #0
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sta b
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b1:
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lda bp
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clc
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adc #1
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ldy b
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sta SCREEN,y
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inc b
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lda b
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cmp #$b
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bne b1
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rts
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}
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@ -0,0 +1,22 @@
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@begin: scope:[] from
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[0] phi() [ ] ( )
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to:@1
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@1: scope:[] from @begin
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[1] phi() [ ] ( )
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[2] call main param-assignment [ ] ( )
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to:@end
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@end: scope:[] from @1
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[3] phi() [ ] ( )
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main: scope:[main] from @1
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[4] phi() [ ] ( main:2 [ ] )
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to:main::@1
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main::@1: scope:[main] from main main::@1
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[5] (byte) main::b#2 ← phi( main/(byte/signed byte/word/signed word/dword/signed dword) 0 main::@1/(byte) main::b#1 ) [ main::b#2 ] ( main:2 [ main::b#2 ] )
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[6] (byte) main::c#0 ← *((const byte*) main::bp#0) + (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::b#2 main::c#0 ] ( main:2 [ main::b#2 main::c#0 ] )
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[7] *((const byte*) main::SCREEN#0 + (byte) main::b#2) ← (byte) main::c#0 [ main::b#2 ] ( main:2 [ main::b#2 ] )
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[8] (byte) main::b#1 ← ++ (byte) main::b#2 [ main::b#1 ] ( main:2 [ main::b#1 ] )
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[9] if((byte) main::b#1!=(byte/signed byte/word/signed word/dword/signed dword) 11) goto main::@1 [ main::b#1 ] ( main:2 [ main::b#1 ] )
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to:main::@return
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main::@return: scope:[main] from main::@1
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[10] return [ ] ( main:2 [ ] )
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to:@return
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462
src/test/java/dk/camelot64/kickc/test/ref/test-address-of.log
Normal file
462
src/test/java/dk/camelot64/kickc/test/ref/test-address-of.log
Normal file
@ -0,0 +1,462 @@
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PARSING src/test/java/dk/camelot64/kickc/test/kc/test-address-of.kc
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void main() {
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byte* SCREEN = $400;
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for( byte b: 0..10) {
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byte* bp = &b;
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byte c = *bp +1;
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SCREEN[b] = c;
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}
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}
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STATEMENTS
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proc (void()) main()
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(byte*) main::SCREEN ← (word/signed word/dword/signed dword) 1024
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(byte) main::b ← (byte/signed byte/word/signed word/dword/signed dword) 0
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main::@1:
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(byte*~) main::$0 ← & (byte) main::b
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(byte*) main::bp ← (byte*~) main::$0
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(byte/word~) main::$1 ← *((byte*) main::bp) + (byte/signed byte/word/signed word/dword/signed dword) 1
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(byte) main::c ← (byte/word~) main::$1
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*((byte*) main::SCREEN + (byte) main::b) ← (byte) main::c
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(byte) main::b ← ++ (byte) main::b
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(boolean~) main::$2 ← (byte) main::b != (byte/signed byte/word/signed word/dword/signed dword) 11
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if((boolean~) main::$2) goto main::@1
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main::@return:
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return
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endproc // main()
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call main
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SYMBOLS
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(void()) main()
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(byte*~) main::$0
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(byte/word~) main::$1
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(boolean~) main::$2
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(label) main::@1
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(label) main::@return
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(byte*) main::SCREEN
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(byte) main::b
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(byte*) main::bp
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(byte) main::c
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Promoting word/signed word/dword/signed dword to byte* in main::SCREEN ← ((byte*)) 1024
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INITIAL CONTROL FLOW GRAPH
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@begin: scope:[] from
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to:@1
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main: scope:[main] from
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(byte*) main::SCREEN ← ((byte*)) (word/signed word/dword/signed dword) 1024
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(byte) main::b ← (byte/signed byte/word/signed word/dword/signed dword) 0
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to:main::@1
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main::@1: scope:[main] from main main::@1
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(byte*~) main::$0 ← & (byte) main::b
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(byte*) main::bp ← (byte*~) main::$0
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(byte/word~) main::$1 ← *((byte*) main::bp) + (byte/signed byte/word/signed word/dword/signed dword) 1
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(byte) main::c ← (byte/word~) main::$1
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*((byte*) main::SCREEN + (byte) main::b) ← (byte) main::c
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(byte) main::b ← ++ (byte) main::b
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(boolean~) main::$2 ← (byte) main::b != (byte/signed byte/word/signed word/dword/signed dword) 11
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if((boolean~) main::$2) goto main::@1
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to:main::@2
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main::@2: scope:[main] from main::@1
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to:main::@return
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main::@return: scope:[main] from main::@2
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return
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to:@return
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@1: scope:[] from @begin
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call main
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to:@end
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@end: scope:[] from @1
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Removing empty block main::@2
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PROCEDURE MODIFY VARIABLE ANALYSIS
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Completing Phi functions...
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CONTROL FLOW GRAPH SSA WITH ASSIGNMENT CALL & RETURN
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@begin: scope:[] from
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to:@1
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main: scope:[main] from @1
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(byte*) main::SCREEN#0 ← ((byte*)) (word/signed word/dword/signed dword) 1024
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(byte) main::b#0 ← (byte/signed byte/word/signed word/dword/signed dword) 0
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to:main::@1
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main::@1: scope:[main] from main main::@1
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(byte*) main::SCREEN#1 ← phi( main/(byte*) main::SCREEN#0 main::@1/(byte*) main::SCREEN#1 )
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(byte) main::b#2 ← phi( main/(byte) main::b#0 main::@1/(byte) main::b#1 )
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(byte*~) main::$0 ← & (byte) main::b#2
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(byte*) main::bp#0 ← (byte*~) main::$0
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(byte/word~) main::$1 ← *((byte*) main::bp#0) + (byte/signed byte/word/signed word/dword/signed dword) 1
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(byte) main::c#0 ← (byte/word~) main::$1
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*((byte*) main::SCREEN#1 + (byte) main::b#2) ← (byte) main::c#0
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(byte) main::b#1 ← ++ (byte) main::b#2
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(boolean~) main::$2 ← (byte) main::b#1 != (byte/signed byte/word/signed word/dword/signed dword) 11
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if((boolean~) main::$2) goto main::@1
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to:main::@return
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main::@return: scope:[main] from main::@1
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return
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to:@return
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@1: scope:[] from @begin
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call main param-assignment
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to:@2
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@2: scope:[] from @1
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to:@end
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@end: scope:[] from @2
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SYMBOL TABLE SSA
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(label) @1
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(label) @2
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(label) @begin
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(label) @end
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(void()) main()
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(byte*~) main::$0
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(byte/word~) main::$1
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(boolean~) main::$2
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(label) main::@1
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(label) main::@return
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(byte*) main::SCREEN
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(byte*) main::SCREEN#0
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(byte*) main::SCREEN#1
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(byte) main::b
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(byte) main::b#0
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(byte) main::b#1
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(byte) main::b#2
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(byte*) main::bp
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(byte*) main::bp#0
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(byte) main::c
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(byte) main::c#0
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OPTIMIZING CONTROL FLOW GRAPH
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Culled Empty Block (label) @2
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Succesful SSA optimization Pass2CullEmptyBlocks
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Alias (byte*) main::bp#0 = (byte*~) main::$0
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Alias (byte) main::c#0 = (byte/word~) main::$1
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Succesful SSA optimization Pass2AliasElimination
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Self Phi Eliminated (byte*) main::SCREEN#1
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Succesful SSA optimization Pass2SelfPhiElimination
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Redundant Phi (byte*) main::SCREEN#1 (byte*) main::SCREEN#0
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Succesful SSA optimization Pass2RedundantPhiElimination
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Simple Condition (boolean~) main::$2 if((byte) main::b#1!=(byte/signed byte/word/signed word/dword/signed dword) 11) goto main::@1
|
||||
Succesful SSA optimization Pass2ConditionalJumpSimplification
|
||||
Constant (const byte*) main::SCREEN#0 = ((byte*))1024
|
||||
Constant (const byte) main::b#0 = 0
|
||||
Constant (const byte*) main::bp#0 = dk.camelot64.kickc.model.ConstantVarPointer@655a5d9c
|
||||
Succesful SSA optimization Pass2ConstantIdentification
|
||||
OPTIMIZING CONTROL FLOW GRAPH
|
||||
Inlining constant with var siblings (const byte) main::b#0
|
||||
Inlining constant with var siblings (const byte) main::b#0
|
||||
Constant inlined main::b#0 = (byte/signed byte/word/signed word/dword/signed dword) 0
|
||||
Succesful SSA optimization Pass2ConstantInlining
|
||||
Block Sequence Planned @begin @1 @end main main::@1 main::@return
|
||||
Added new block during phi lifting main::@3(between main::@1 and main::@1)
|
||||
Block Sequence Planned @begin @1 @end main main::@1 main::@return main::@3
|
||||
Adding NOP phi() at start of @begin
|
||||
Adding NOP phi() at start of @1
|
||||
Adding NOP phi() at start of @end
|
||||
Adding NOP phi() at start of main
|
||||
CALL GRAPH
|
||||
Calls in [] to main:2
|
||||
|
||||
Propagating live ranges...
|
||||
Propagating live ranges...
|
||||
Propagating live ranges...
|
||||
Created 1 initial phi equivalence classes
|
||||
Coalesced [11] main::b#3 ← main::b#1
|
||||
Coalesced down to 1 phi equivalence classes
|
||||
Culled Empty Block (label) main::@3
|
||||
Block Sequence Planned @begin @1 @end main main::@1 main::@return
|
||||
Adding NOP phi() at start of @begin
|
||||
Adding NOP phi() at start of @1
|
||||
Adding NOP phi() at start of @end
|
||||
Adding NOP phi() at start of main
|
||||
Propagating live ranges...
|
||||
Propagating live ranges...
|
||||
Propagating live ranges...
|
||||
|
||||
FINAL CONTROL FLOW GRAPH
|
||||
@begin: scope:[] from
|
||||
[0] phi() [ ] ( )
|
||||
to:@1
|
||||
@1: scope:[] from @begin
|
||||
[1] phi() [ ] ( )
|
||||
[2] call main param-assignment [ ] ( )
|
||||
to:@end
|
||||
@end: scope:[] from @1
|
||||
[3] phi() [ ] ( )
|
||||
main: scope:[main] from @1
|
||||
[4] phi() [ ] ( main:2 [ ] )
|
||||
to:main::@1
|
||||
main::@1: scope:[main] from main main::@1
|
||||
[5] (byte) main::b#2 ← phi( main/(byte/signed byte/word/signed word/dword/signed dword) 0 main::@1/(byte) main::b#1 ) [ main::b#2 ] ( main:2 [ main::b#2 ] )
|
||||
[6] (byte) main::c#0 ← *((const byte*) main::bp#0) + (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::b#2 main::c#0 ] ( main:2 [ main::b#2 main::c#0 ] )
|
||||
[7] *((const byte*) main::SCREEN#0 + (byte) main::b#2) ← (byte) main::c#0 [ main::b#2 ] ( main:2 [ main::b#2 ] )
|
||||
[8] (byte) main::b#1 ← ++ (byte) main::b#2 [ main::b#1 ] ( main:2 [ main::b#1 ] )
|
||||
[9] if((byte) main::b#1!=(byte/signed byte/word/signed word/dword/signed dword) 11) goto main::@1 [ main::b#1 ] ( main:2 [ main::b#1 ] )
|
||||
to:main::@return
|
||||
main::@return: scope:[main] from main::@1
|
||||
[10] return [ ] ( main:2 [ ] )
|
||||
to:@return
|
||||
|
||||
DOMINATORS
|
||||
@begin dominated by @begin
|
||||
@1 dominated by @1 @begin
|
||||
@end dominated by @1 @begin @end
|
||||
main dominated by @1 @begin main
|
||||
main::@1 dominated by @1 @begin main::@1 main
|
||||
main::@return dominated by main::@return @1 @begin main::@1 main
|
||||
|
||||
NATURAL LOOPS
|
||||
Found back edge: Loop head: main::@1 tails: main::@1 blocks: null
|
||||
Populated: Loop head: main::@1 tails: main::@1 blocks: main::@1
|
||||
Loop head: main::@1 tails: main::@1 blocks: main::@1
|
||||
|
||||
NATURAL LOOPS WITH DEPTH
|
||||
Found 0 loops in scope []
|
||||
Found 1 loops in scope [main]
|
||||
Loop head: main::@1 tails: main::@1 blocks: main::@1
|
||||
Loop head: main::@1 tails: main::@1 blocks: main::@1 depth: 1
|
||||
|
||||
|
||||
VARIABLE REGISTER WEIGHTS
|
||||
(void()) main()
|
||||
(byte*) main::SCREEN
|
||||
(byte) main::b
|
||||
(byte) main::b#1 16.5
|
||||
(byte) main::b#2 11.0
|
||||
(byte*) main::bp
|
||||
(byte) main::c
|
||||
(byte) main::c#0 22.0
|
||||
|
||||
Initial phi equivalence classes
|
||||
[ main::b#2 main::b#1 ]
|
||||
Added variable main::c#0 to zero page equivalence class [ main::c#0 ]
|
||||
Complete equivalence classes
|
||||
[ main::b#2 main::b#1 ]
|
||||
[ main::c#0 ]
|
||||
Allocated zp ZP_BYTE:2 [ main::b#2 main::b#1 ]
|
||||
Allocated zp ZP_BYTE:3 [ main::c#0 ]
|
||||
|
||||
INITIAL ASM
|
||||
//SEG0 Basic Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
//SEG1 Global Constants & labels
|
||||
//SEG2 @begin
|
||||
bbegin:
|
||||
//SEG3 [1] phi from @begin to @1 [phi:@begin->@1]
|
||||
b1_from_bbegin:
|
||||
jmp b1
|
||||
//SEG4 @1
|
||||
b1:
|
||||
//SEG5 [2] call main param-assignment [ ] ( )
|
||||
//SEG6 [4] phi from @1 to main [phi:@1->main]
|
||||
main_from_b1:
|
||||
jsr main
|
||||
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
|
||||
bend_from_b1:
|
||||
jmp bend
|
||||
//SEG8 @end
|
||||
bend:
|
||||
//SEG9 main
|
||||
main: {
|
||||
.label SCREEN = $400
|
||||
.label bp = b
|
||||
.label c = 3
|
||||
.label b = 2
|
||||
//SEG10 [5] phi from main to main::@1 [phi:main->main::@1]
|
||||
b1_from_main:
|
||||
//SEG11 [5] phi (byte) main::b#2 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
|
||||
lda #0
|
||||
sta b
|
||||
jmp b1
|
||||
//SEG12 [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
|
||||
b1_from_b1:
|
||||
//SEG13 [5] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@1->main::@1#0] -- register_copy
|
||||
jmp b1
|
||||
//SEG14 main::@1
|
||||
b1:
|
||||
//SEG15 [6] (byte) main::c#0 ← *((const byte*) main::bp#0) + (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::b#2 main::c#0 ] ( main:2 [ main::b#2 main::c#0 ] ) -- vbuz1=_deref_pbuc1_plus_1
|
||||
ldy bp
|
||||
iny
|
||||
sty c
|
||||
//SEG16 [7] *((const byte*) main::SCREEN#0 + (byte) main::b#2) ← (byte) main::c#0 [ main::b#2 ] ( main:2 [ main::b#2 ] ) -- pbuc1_derefidx_vbuz1=vbuz2
|
||||
lda c
|
||||
ldy b
|
||||
sta SCREEN,y
|
||||
//SEG17 [8] (byte) main::b#1 ← ++ (byte) main::b#2 [ main::b#1 ] ( main:2 [ main::b#1 ] ) -- vbuz1=_inc_vbuz1
|
||||
inc b
|
||||
//SEG18 [9] if((byte) main::b#1!=(byte/signed byte/word/signed word/dword/signed dword) 11) goto main::@1 [ main::b#1 ] ( main:2 [ main::b#1 ] ) -- vbuz1_neq_vbuc1_then_la1
|
||||
lda b
|
||||
cmp #$b
|
||||
bne b1_from_b1
|
||||
jmp breturn
|
||||
//SEG19 main::@return
|
||||
breturn:
|
||||
//SEG20 [10] return [ ] ( main:2 [ ] )
|
||||
rts
|
||||
}
|
||||
|
||||
REGISTER UPLIFT POTENTIAL REGISTERS
|
||||
Statement [7] *((const byte*) main::SCREEN#0 + (byte) main::b#2) ← (byte) main::c#0 [ main::b#2 ] ( main:2 [ main::b#2 ] ) always clobbers reg byte y
|
||||
Statement [9] if((byte) main::b#1!=(byte/signed byte/word/signed word/dword/signed dword) 11) goto main::@1 [ main::b#1 ] ( main:2 [ main::b#1 ] ) always clobbers reg byte a
|
||||
Potential registers zp ZP_BYTE:2 [ main::b#2 main::b#1 ] : zp ZP_BYTE:2 ,
|
||||
Potential registers zp ZP_BYTE:3 [ main::c#0 ] : zp ZP_BYTE:3 , reg byte a , reg byte x , reg byte y ,
|
||||
|
||||
REGISTER UPLIFT SCOPES
|
||||
Uplift Scope [main] 27.5: zp ZP_BYTE:2 [ main::b#2 main::b#1 ] 22: zp ZP_BYTE:3 [ main::c#0 ]
|
||||
Uplift Scope []
|
||||
|
||||
Uplifting [main] best 443 combination zp ZP_BYTE:2 [ main::b#2 main::b#1 ] reg byte a [ main::c#0 ]
|
||||
Uplifting [] best 443 combination
|
||||
Attempting to uplift remaining variables inzp ZP_BYTE:2 [ main::b#2 main::b#1 ]
|
||||
Uplifting [main] best 443 combination zp ZP_BYTE:2 [ main::b#2 main::b#1 ]
|
||||
|
||||
ASSEMBLER BEFORE OPTIMIZATION
|
||||
//SEG0 Basic Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
//SEG1 Global Constants & labels
|
||||
//SEG2 @begin
|
||||
bbegin:
|
||||
//SEG3 [1] phi from @begin to @1 [phi:@begin->@1]
|
||||
b1_from_bbegin:
|
||||
jmp b1
|
||||
//SEG4 @1
|
||||
b1:
|
||||
//SEG5 [2] call main param-assignment [ ] ( )
|
||||
//SEG6 [4] phi from @1 to main [phi:@1->main]
|
||||
main_from_b1:
|
||||
jsr main
|
||||
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
|
||||
bend_from_b1:
|
||||
jmp bend
|
||||
//SEG8 @end
|
||||
bend:
|
||||
//SEG9 main
|
||||
main: {
|
||||
.label SCREEN = $400
|
||||
.label bp = b
|
||||
.label b = 2
|
||||
//SEG10 [5] phi from main to main::@1 [phi:main->main::@1]
|
||||
b1_from_main:
|
||||
//SEG11 [5] phi (byte) main::b#2 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
|
||||
lda #0
|
||||
sta b
|
||||
jmp b1
|
||||
//SEG12 [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
|
||||
b1_from_b1:
|
||||
//SEG13 [5] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@1->main::@1#0] -- register_copy
|
||||
jmp b1
|
||||
//SEG14 main::@1
|
||||
b1:
|
||||
//SEG15 [6] (byte) main::c#0 ← *((const byte*) main::bp#0) + (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::b#2 main::c#0 ] ( main:2 [ main::b#2 main::c#0 ] ) -- vbuaa=_deref_pbuc1_plus_1
|
||||
lda bp
|
||||
clc
|
||||
adc #1
|
||||
//SEG16 [7] *((const byte*) main::SCREEN#0 + (byte) main::b#2) ← (byte) main::c#0 [ main::b#2 ] ( main:2 [ main::b#2 ] ) -- pbuc1_derefidx_vbuz1=vbuaa
|
||||
ldy b
|
||||
sta SCREEN,y
|
||||
//SEG17 [8] (byte) main::b#1 ← ++ (byte) main::b#2 [ main::b#1 ] ( main:2 [ main::b#1 ] ) -- vbuz1=_inc_vbuz1
|
||||
inc b
|
||||
//SEG18 [9] if((byte) main::b#1!=(byte/signed byte/word/signed word/dword/signed dword) 11) goto main::@1 [ main::b#1 ] ( main:2 [ main::b#1 ] ) -- vbuz1_neq_vbuc1_then_la1
|
||||
lda b
|
||||
cmp #$b
|
||||
bne b1_from_b1
|
||||
jmp breturn
|
||||
//SEG19 main::@return
|
||||
breturn:
|
||||
//SEG20 [10] return [ ] ( main:2 [ ] )
|
||||
rts
|
||||
}
|
||||
|
||||
ASSEMBLER OPTIMIZATIONS
|
||||
Removing instruction jmp b1
|
||||
Removing instruction jmp bend
|
||||
Removing instruction jmp b1
|
||||
Removing instruction jmp breturn
|
||||
Succesful ASM optimization Pass5NextJumpElimination
|
||||
Replacing label b1_from_b1 with b1
|
||||
Removing instruction bbegin:
|
||||
Removing instruction b1_from_bbegin:
|
||||
Removing instruction main_from_b1:
|
||||
Removing instruction bend_from_b1:
|
||||
Removing instruction b1_from_b1:
|
||||
Succesful ASM optimization Pass5RedundantLabelElimination
|
||||
Removing instruction b1:
|
||||
Removing instruction bend:
|
||||
Removing instruction b1_from_main:
|
||||
Removing instruction breturn:
|
||||
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||
Removing instruction jmp b1
|
||||
Succesful ASM optimization Pass5NextJumpElimination
|
||||
|
||||
FINAL SYMBOL TABLE
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(void()) main()
|
||||
(label) main::@1
|
||||
(label) main::@return
|
||||
(byte*) main::SCREEN
|
||||
(const byte*) main::SCREEN#0 SCREEN = ((byte*))(word/signed word/dword/signed dword) 1024
|
||||
(byte) main::b
|
||||
(byte) main::b#1 b zp ZP_BYTE:2 16.5
|
||||
(byte) main::b#2 b zp ZP_BYTE:2 11.0
|
||||
(byte*) main::bp
|
||||
(const byte*) main::bp#0 bp = &(byte) main::b#2
|
||||
(byte) main::c
|
||||
(byte) main::c#0 reg byte a 22.0
|
||||
|
||||
zp ZP_BYTE:2 [ main::b#2 main::b#1 ]
|
||||
reg byte a [ main::c#0 ]
|
||||
|
||||
|
||||
FINAL ASSEMBLER
|
||||
Score: 347
|
||||
|
||||
//SEG0 Basic Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
//SEG1 Global Constants & labels
|
||||
//SEG2 @begin
|
||||
//SEG3 [1] phi from @begin to @1 [phi:@begin->@1]
|
||||
//SEG4 @1
|
||||
//SEG5 [2] call main param-assignment [ ] ( )
|
||||
//SEG6 [4] phi from @1 to main [phi:@1->main]
|
||||
jsr main
|
||||
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
|
||||
//SEG8 @end
|
||||
//SEG9 main
|
||||
main: {
|
||||
.label SCREEN = $400
|
||||
.label bp = b
|
||||
.label b = 2
|
||||
//SEG10 [5] phi from main to main::@1 [phi:main->main::@1]
|
||||
//SEG11 [5] phi (byte) main::b#2 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
|
||||
lda #0
|
||||
sta b
|
||||
//SEG12 [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
|
||||
//SEG13 [5] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@1->main::@1#0] -- register_copy
|
||||
//SEG14 main::@1
|
||||
b1:
|
||||
//SEG15 [6] (byte) main::c#0 ← *((const byte*) main::bp#0) + (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::b#2 main::c#0 ] ( main:2 [ main::b#2 main::c#0 ] ) -- vbuaa=_deref_pbuc1_plus_1
|
||||
lda bp
|
||||
clc
|
||||
adc #1
|
||||
//SEG16 [7] *((const byte*) main::SCREEN#0 + (byte) main::b#2) ← (byte) main::c#0 [ main::b#2 ] ( main:2 [ main::b#2 ] ) -- pbuc1_derefidx_vbuz1=vbuaa
|
||||
ldy b
|
||||
sta SCREEN,y
|
||||
//SEG17 [8] (byte) main::b#1 ← ++ (byte) main::b#2 [ main::b#1 ] ( main:2 [ main::b#1 ] ) -- vbuz1=_inc_vbuz1
|
||||
inc b
|
||||
//SEG18 [9] if((byte) main::b#1!=(byte/signed byte/word/signed word/dword/signed dword) 11) goto main::@1 [ main::b#1 ] ( main:2 [ main::b#1 ] ) -- vbuz1_neq_vbuc1_then_la1
|
||||
lda b
|
||||
cmp #$b
|
||||
bne b1
|
||||
//SEG19 main::@return
|
||||
//SEG20 [10] return [ ] ( main:2 [ ] )
|
||||
rts
|
||||
}
|
||||
|
||||
@ -0,0 +1,18 @@
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(void()) main()
|
||||
(label) main::@1
|
||||
(label) main::@return
|
||||
(byte*) main::SCREEN
|
||||
(const byte*) main::SCREEN#0 SCREEN = ((byte*))(word/signed word/dword/signed dword) 1024
|
||||
(byte) main::b
|
||||
(byte) main::b#1 b zp ZP_BYTE:2 16.5
|
||||
(byte) main::b#2 b zp ZP_BYTE:2 11.0
|
||||
(byte*) main::bp
|
||||
(const byte*) main::bp#0 bp = &(byte) main::b#2
|
||||
(byte) main::c
|
||||
(byte) main::c#0 reg byte a 22.0
|
||||
|
||||
zp ZP_BYTE:2 [ main::b#2 main::b#1 ]
|
||||
reg byte a [ main::c#0 ]
|
||||
Loading…
Reference in New Issue
Block a user