[GROOVY-5008] Integer optimization is not executed

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.2
• Fix Version/s: 1.8.3, 1.9-beta-4
• Component/s: primtive opts
• Environment: Groovy version: 1.8.2, 1.9.0-2-SNAPSHOT; JVM version: 1.7.0
• Flags: Patch
• Assignee: Jochen Theodorou
• Reporter: Masato Nagai
• Created: 11/Sep/11 02:43
• Updated: 05/Apr/15 14:44
• Resolved: 11/Sep/11 05:27

Description

Integer optimization is not executed because BytecodeInterface8.isOrigZ() which is for boolean optimization and always returns false is called instead of BytecodeInterface8.isOrigInt().

Steps to confirm the problem:

1. Save the following script as Test.groovy

   int fib(int n) {
       if (n < 2) return n
       return rcfib(n - 1) + rcfib(n - 2)
   }
   

2. Compile Test.groovy using groovyc

   groovyc Test.groovy

3. Disassemble the Test.class

   javap -c Test

4. You can see BytecodeInterface8.isOrigZ is called

     public int fib(int);
       Code:
          0: invokestatic  #20                 // Method $getCallSiteArray:()[Lorg/codehaus/groovy/runtime/callsite/CallSite;
          3: astore_2      
          4: invokestatic  #66                 // Method org/codehaus/groovy/runtime/BytecodeInterface8.isOrigZ:()Z
          7: ifeq          25
         10: getstatic     #68                 // Field __$stMC:Z
         13: ifne          25
         16: invokestatic  #71                 // Method org/codehaus/groovy/runtime/BytecodeInterface8.disabledStandardMetaClass:()Z
         19: ifne          25
         :
         :