[Newbies] aCompiledMethod>>#= puzzle
Klaus D. Witzel
klaus.witzel at cobss.com
Wed Jul 26 08:14:48 UTC 2006
This is a puzzle. I will donate EUR 50 to the Squeak project
( http://www.squeak.org/Donate/ ) if you post a satisfying answer here in
Input: any two instances of CompiledMethod and a series of questions and
answers. You can ask other / more questions, except a question like "is
<this> the answer" where <this> means your guess.
Q1: do the 2 methods have equivalent header?
Q2: do the 2 have same bytecode size?
Q3: do the 2 have the same literals?
Q4: do the 2 send different messages?
Q5: do the 2 send messages to diffent temps or instVars or other?
Q6: given any input, do the 2 return the same result?
Q7: given any input, do the 2 perform the same sequence of message sends?
Q8: does the one with *more* bytecodes run faster?
So the 2 differ in bytecodes and performance.
Q: what's the name of the *longer*, in terms of bytecodes, method? With
name it is meant, under what name is the method known in the field (in the
A: your solution to the puzzle
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