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https://gitlab.com/camelot/kickc.git
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Added loop depth analysis pass - not implemented yet.
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45e64d59f1
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@ -141,6 +141,11 @@ public class Compiler {
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log.append("NATURAL LOOPS");
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log.append("NATURAL LOOPS");
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log.append(program.getGraph().getLoopSet().toString());
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log.append(program.getGraph().getLoopSet().toString());
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Pass3LoopDepthAnalysis pass3LoopDepthAnalysis = new Pass3LoopDepthAnalysis(program, log);
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pass3LoopDepthAnalysis.findLoopDepths();
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log.append("NATURAL LOOPS WITH DEPTH");
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log.append(program.getGraph().getLoopSet().toString());
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}
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}
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public void pass2OptimizeSSA(Program program, CompileLog log) {
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public void pass2OptimizeSSA(Program program, CompileLog log) {
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@ -1,35 +1,68 @@
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package dk.camelot64.kickc.icl;
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package dk.camelot64.kickc.icl;
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import java.util.ArrayList;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.LinkedHashSet;
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import java.util.List;
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import java.util.List;
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/** The call graph for the entire control flow graph.
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/**
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* The call graph for the entire control flow graph.
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* Created by {@link dk.camelot64.kickc.passes.Pass3CallGraphAnalysis}
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* Created by {@link dk.camelot64.kickc.passes.Pass3CallGraphAnalysis}
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* */
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*/
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public class CallGraph {
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public class CallGraph {
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private List<CallBlock> callBlocks;
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private List<CallBlock> callBlocks;
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public CallGraph() {
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public CallGraph() {
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this.callBlocks = new ArrayList<>();
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this.callBlocks = new ArrayList<>();
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}
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}
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/**
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/**
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* Get the call block for a specific scope. Create it if it does not already exist.
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* Get the call block for a specific scope. Create it if it does not already exist.
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*
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* @param scopeLabel The label for the scope.
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* @param scopeLabel The label for the scope.
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* @return The call block for the scope
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* @return The call block for the scope
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*/
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*/
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public CallBlock getOrCreateCallBlock(LabelRef scopeLabel) {
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public CallBlock getOrCreateCallBlock(LabelRef scopeLabel) {
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CallBlock callBlock = getCallBlock(scopeLabel);
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if (callBlock != null) return callBlock;
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// Not found - create it
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CallBlock newCallBlock = new CallBlock(scopeLabel);
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callBlocks.add(newCallBlock);
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return newCallBlock;
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}
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/**
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* Get the call block for a specific scope.
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*
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* @param scopeLabel The label for the scope.
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* @return The call block for the scope. Null if the call block does not exist (no calls are made from it).
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*/
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private CallBlock getCallBlock(LabelRef scopeLabel) {
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for (CallBlock callBlock : callBlocks) {
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for (CallBlock callBlock : callBlocks) {
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if (callBlock.getScopeLabel().equals(scopeLabel)) {
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if (callBlock.getScopeLabel().equals(scopeLabel)) {
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return callBlock;
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return callBlock;
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}
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}
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}
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}
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// Not found - create it
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return null;
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CallBlock newCallBlock = new CallBlock(scopeLabel);
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}
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callBlocks.add(newCallBlock);
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return newCallBlock;
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public CallBlock getFirstCallBlock() {
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return getOrCreateCallBlock(new LabelRef(""));
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}
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/**
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* Get sub call blocks called from a specific call block.
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* @param block The block to find subs for
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* @return The sub call blocks called from the passed block
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*/
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public Collection<CallBlock> getCalledBlocks(CallBlock block) {
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Collection<LabelRef> calledLabels = block.getCalledBlocks();
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LinkedHashSet<CallBlock> called = new LinkedHashSet<>();
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for (LabelRef calledLabel : calledLabels) {
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called.add(getOrCreateCallBlock(calledLabel));
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}
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return called;
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}
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}
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@Override
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@Override
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@ -41,10 +74,14 @@ public class CallGraph {
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return out.toString();
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return out.toString();
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}
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}
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/** A block in the call graph, matching a scope in the program. */
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/**
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* A block in the call graph, matching a scope in the program.
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*/
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public static class CallBlock {
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public static class CallBlock {
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/** The label of the scope. (Program scope has label "" and procedure scopes have their respective labels). */
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/**
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* The label of the scope. (Program scope has label "" and procedure scopes have their respective labels).
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*/
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private LabelRef scopeLabel;
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private LabelRef scopeLabel;
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private List<Call> calls;
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private List<Call> calls;
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@ -62,6 +99,20 @@ public class CallGraph {
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this.calls.add(new Call(procedureLabel, statementCall));
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this.calls.add(new Call(procedureLabel, statementCall));
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}
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}
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/**
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* Get all call blocks called from this one.
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*
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* @return The scope labels of all call blocks called from this one.
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*/
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public Collection<LabelRef> getCalledBlocks() {
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LinkedHashSet<LabelRef> called = new LinkedHashSet<>();
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for (Call call : calls) {
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called.add(call.getProcedure());
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}
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return called;
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}
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@Override
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@Override
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public String toString() {
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public String toString() {
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StringBuilder out = new StringBuilder();
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StringBuilder out = new StringBuilder();
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@ -72,13 +123,19 @@ public class CallGraph {
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return out.toString();
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return out.toString();
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}
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}
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/** A single call in the call block. */
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/**
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* A single call found in the call block.
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*/
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public static class Call {
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public static class Call {
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/** Statement index of the call statement, */
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/**
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* Statement index of the call statement,
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*/
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private Integer callStatementIdx;
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private Integer callStatementIdx;
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/** The label of the called procedure. */
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/**
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* The label of the called procedure.
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*/
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private LabelRef procedure;
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private LabelRef procedure;
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public Call(LabelRef procedure, StatementCall statementCall) {
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public Call(LabelRef procedure, StatementCall statementCall) {
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@ -86,12 +143,21 @@ public class CallGraph {
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this.procedure = procedure;
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this.procedure = procedure;
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}
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}
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public LabelRef getProcedure() {
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return procedure;
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}
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public Integer getCallStatementIdx() {
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return callStatementIdx;
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}
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@Override
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@Override
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public String toString() {
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public String toString() {
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StringBuilder out = new StringBuilder();
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StringBuilder out = new StringBuilder();
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out.append(callStatementIdx).append(":").append(procedure);
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out.append(callStatementIdx).append(":").append(procedure);
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return out.toString();
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return out.toString();
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}
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}
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}
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}
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}
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}
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@ -12,9 +12,14 @@ public class ControlFlowGraph {
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private Map<LabelRef, ControlFlowBlock> blocks;
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private Map<LabelRef, ControlFlowBlock> blocks;
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private LabelRef firstBlockRef;
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private LabelRef firstBlockRef;
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/** Sequence of blocks used when generating ASM */
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private List<LabelRef> sequence;
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private List<LabelRef> sequence;
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/** Information about dominators of all blocks*/
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private DominatorsGraph dominators;
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private DominatorsGraph dominators;
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/** Information about loops. */
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private NaturalLoopSet loopSet;
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private NaturalLoopSet loopSet;
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/** Information about calls. */
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private CallGraph callGraph;
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private CallGraph callGraph;
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public ControlFlowGraph(Map<LabelRef, ControlFlowBlock> blocks, LabelRef firstBlockRef) {
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public ControlFlowGraph(Map<LabelRef, ControlFlowBlock> blocks, LabelRef firstBlockRef) {
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@ -10,7 +10,7 @@ public class Label implements Symbol {
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/** The name of the label. */
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/** The name of the label. */
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private String name;
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private String name;
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/** The name of the containing scope */
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/** The containing scope */
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private Scope scope;
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private Scope scope;
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private boolean intermediate;
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private boolean intermediate;
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@ -26,14 +26,7 @@ public class Pass3CallGraphAnalysis {
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CallGraph callGraph = new CallGraph();
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CallGraph callGraph = new CallGraph();
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for (ControlFlowBlock block : program.getGraph().getAllBlocks()) {
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for (ControlFlowBlock block : program.getGraph().getAllBlocks()) {
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Symbol blockSymbol = program.getScope().getSymbol(block.getLabel());
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LabelRef scopeRef = getScopeRef(block, program);
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LabelRef scopeRef;
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if(blockSymbol instanceof Procedure) {
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scopeRef = ((Procedure) blockSymbol).getRef().getLabelRef();
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} else {
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Scope blockScope = blockSymbol.getScope();
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scopeRef = new LabelRef(blockScope.getFullName());
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}
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for (Statement statement : block.getStatements()) {
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for (Statement statement : block.getStatements()) {
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if(statement instanceof StatementCall) {
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if(statement instanceof StatementCall) {
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ProcedureRef procedure = ((StatementCall) statement).getProcedure();
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ProcedureRef procedure = ((StatementCall) statement).getProcedure();
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@ -46,4 +39,22 @@ public class Pass3CallGraphAnalysis {
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program.getGraph().setCallGraph(callGraph);
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program.getGraph().setCallGraph(callGraph);
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}
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}
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/**
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* Gets a label reference representing the scope of a block
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*
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* @param block The block
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* @return The label of the scope containing the block. The outermost scope has a label containing an empty string.
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*/
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public static LabelRef getScopeRef(ControlFlowBlock block, Program program) {
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Symbol blockSymbol = program.getScope().getSymbol(block.getLabel());
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LabelRef scopeRef;
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if(blockSymbol instanceof Procedure) {
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scopeRef = ((Procedure) blockSymbol).getRef().getLabelRef();
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} else {
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Scope blockScope = blockSymbol.getScope();
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scopeRef = new LabelRef(blockScope.getFullName());
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}
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return scopeRef;
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}
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}
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}
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@ -95,6 +95,7 @@ public class Pass3LoopAnalysis {
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}
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}
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}
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}
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}
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}
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program.getGraph().setLoops(loopSet);
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program.getGraph().setLoops(loopSet);
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}
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}
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47
src/dk/camelot64/kickc/passes/Pass3LoopDepthAnalysis.java
Normal file
47
src/dk/camelot64/kickc/passes/Pass3LoopDepthAnalysis.java
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@ -0,0 +1,47 @@
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package dk.camelot64.kickc.passes;
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import dk.camelot64.kickc.CompileLog;
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import dk.camelot64.kickc.icl.*;
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import java.util.*;
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/**
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* Finds the depth of loops in the control flow graph.
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* Uses the call graph and natural loops of the control flow graph.
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*/
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public class Pass3LoopDepthAnalysis {
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private Program program;
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private CompileLog log;
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public Pass3LoopDepthAnalysis(Program program, CompileLog log) {
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this.program = program;
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this.log = log;
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}
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public Program getProgram() {
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return program;
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}
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public CompileLog getLog() {
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return log;
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}
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/**
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* Finds the depth of loops in the control flow graph.
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* Uses the call graph and natural loops of the control flow graph.
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*/
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public void findLoopDepths() {
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CallGraph callGraph = program.getGraph().getCallGraph();
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NaturalLoopSet loopSet = program.getGraph().getLoopSet();
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}
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}
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