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C: less code for virtual calls

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This commit is contained in:
Alexey Andreev 2019-05-23 15:26:35 +03:00
parent 8b3df6f730
commit 063a9f049e
1 changed files with 27 additions and 12 deletions
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39
core/src/main/java/org/teavm/backend/c/generate/CodeGenerationVisitor.java
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@ -352,14 +352,18 @@ public class CodeGenerationVisitor implements ExprVisitor, StatementVisitor {
@Override
public void visit(VariableExpr expr) {
pushLocation(expr.getLocation());
if (expr.getIndex() == 0) {
writer.print("teavm_this_");
} else {
writer.print("teavm_local_" + expr.getIndex());
}
writer.print(getVariableName(expr.getIndex()));
popLocation(expr.getLocation());
}
private String getVariableName(int index) {
if (index == 0) {
return "teavm_this_";
} else {
return "teavm_local_" + index;
}
}
@Override
public void visit(SubscriptExpr expr) {
pushLocation(expr.getLocation());
@ -504,12 +508,21 @@ public class CodeGenerationVisitor implements ExprVisitor, StatementVisitor {
return;
}
String receiver = allocTemporaryVariable(CVariableType.PTR);
writer.print("((").print(receiver).print(" = ");
arguments.get(0).acceptVisitor(this);
Expr receiverArg = arguments.get(0);
boolean closingParenthesis = false;
String receiver;
if (receiverArg instanceof VariableExpr) {
receiver = getVariableName(((VariableExpr) receiverArg).getIndex());
} else {
receiver = allocTemporaryVariable(CVariableType.PTR);
writer.print("((").print(receiver).print(" = ");
arguments.get(0).acceptVisitor(this);
writer.print("), ");
closingParenthesis = true;
}
includes.includeClass(vtableClass);
writer.print("), TEAVM_METHOD(")
writer.print("TEAVM_METHOD(")
.print(receiver).print(", ")
.print(names.forClassClass(vtableClass)).print(", ")
.print(names.forVirtualMethod(reference.getDescriptor()))
@ -518,9 +531,11 @@ public class CodeGenerationVisitor implements ExprVisitor, StatementVisitor {
writer.print(", ");
arguments.get(i).acceptVisitor(this);
}
writer.print("))");
freeTemporaryVariable(CVariableType.PTR);
writer.print(")");
if (closingParenthesis) {
writer.print(")");
freeTemporaryVariable(CVariableType.PTR);
}
}
private void generateNoMethodCall(MethodReference reference, List<? extends Expr> arguments) {