[GROOVY-11287] Perform constant folding for basic math calculations in CS

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 5.0.0-alpha-4, 4.0.17
• Component/s: performance, Static compilation

Language

groovy

• Assignee: Unassigned
• Reporter: Oscar N
• Created: 18/Jan/24 13:59
• Updated: 24/Jan/24 14:38

Description

I have the following Groovy code and its Java equivalent:

@CompileStatic
final class Main {
    private static final int ONE = 1

    static void main(String[] args) {
        int two = ONE + 1
        println two
    }
}

public final class JavaMain {
    private static final int ONE = 1;

    public static void main(String[] args) {
        int two = ONE + 1;
        System.out.println(two);
    }
}

In Groovy, it currently compiles to:

int two = ONE + 1

In Java, the calculation is done at compile-time and inlined:

int two = 2

It would be great if Groovy also did this.