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Implemented cast constant identification. 282/359

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This commit is contained in:
jespergravgaard 2019-05-14 00:16:17 +02:00
parent 6e0b665423
commit 6cfa5c750c
2 changed files with 38 additions and 0 deletions
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2
src/main/java/dk/camelot64/kickc/Compiler.java
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@ -249,6 +249,7 @@ public class Compiler {
optimizations.add(new Pass2ConditionalAndOrRewriting(program));
optimizations.add(new Pass2ConstantRValueConsolidation(program));
optimizations.add(new Pass2ConstantIdentification(program));
optimizations.add(new Pass2ConstantValues(program));
optimizations.add(new PassNStatementIndices(program));
optimizations.add(new PassNVariableReferenceInfos(program));
//optimizations.add(new Pass2ConstantAdditionElimination(program));
@ -308,6 +309,7 @@ public class Compiler {
constantOptimizations.add(new Pass2IdenticalPhiElimination(program));
constantOptimizations.add(new Pass2ConstantRValueConsolidation(program));
constantOptimizations.add(new Pass2ConstantIdentification(program));
constantOptimizations.add(new Pass2ConstantValues(program));
constantOptimizations.add(new Pass2ConstantAdditionElimination(program));
constantOptimizations.add(new Pass2ConstantSimplification(program));
constantOptimizations.add(new Pass2ConstantCastSimplification(program));

36
src/main/java/dk/camelot64/kickc/passes/Pass2ConstantValues.java Normal file
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@ -0,0 +1,36 @@
package dk.camelot64.kickc.passes;
import dk.camelot64.kickc.model.Program;
import dk.camelot64.kickc.model.iterator.ProgramValueIterator;
import dk.camelot64.kickc.model.values.*;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* Compiler Pass identifying constants values
*/
public class Pass2ConstantValues extends Pass2SsaOptimization {
public Pass2ConstantValues(Program program) {
super(program);
}
@Override
public boolean step() {
AtomicBoolean modified = new AtomicBoolean(false);
ProgramValueIterator.execute(getProgram().getGraph(), (programValue, currentStmt, stmtIt, currentBlock) -> {
Value value = programValue.get();
if((value instanceof RValue) && !(value instanceof ConstantValue)) {
ConstantValue constant = Pass2ConstantIdentification.getConstant((RValue) value);
if(constant!=null) {
programValue.set(constant);
getLog().append("Constant value identified " + value+ " in "+ (currentStmt==null?"":currentStmt.toString(getProgram(), false)));
modified.set(true);
}
}
});
return modified.get();
}
}