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https://issues.apache.org/jira/browse/GROOVY-11288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles updated GROOVY-11288:
---------------------------------
Language: groovy
> Unnecessary bytecode generated after variable assignment
> --------------------------------------------------------
>
> Key: GROOVY-11288
> URL: https://issues.apache.org/jira/browse/GROOVY-11288
> Project: Groovy
> Issue Type: Bug
> Components: bytecode, Compiler
> Affects Versions: 2.5.23, 3.0.20, 5.0.0-alpha-4, 4.0.17
> Reporter: Oscar N
> Priority: Minor
>
> I have the following code:
> {code:groovy}
> package org.example
> import groovy.transform.CompileStatic
> @CompileStatic
> final class Main {
> static void main(String[] args) {
> int three = 3
> String str = 'foo'
> }
> }
> {code}
> When looking at the compiled output, the variable is loaded and immediately
> popped after storing:
> {code:java}
> // access flags 0x89
> public static varargs main([Ljava/lang/String;)V
> L0
> LINENUMBER 8 L0
> ICONST_3
> ISTORE 1
> L1
> ILOAD 1
> POP
> L2
> LINENUMBER 9 L2
> LDC "foo"
> ASTORE 2
> L3
> ALOAD 2
> POP
> L4
> LINENUMBER 10 L4
> RETURN
> LOCALVARIABLE args [Ljava/lang/String; L0 L4 0
> LOCALVARIABLE three I L1 L4 1
> LOCALVARIABLE str Ljava/lang/String; L3 L4 2
> MAXSTACK = 1
> MAXLOCALS = 3
> {code}
> This issue also occurs in dynamic compilation mode.
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