Peculiar fruits in the JDK
David M. Lloyd
david.lloyd at redhat.com
Wed Jun 25 09:49:34 PDT 2008
On 06/25/2008 11:33 AM, Ulf Zibis wrote:
> Hi David,
> please don't CC to me. Otherwise I get your message twice. I read the list.
Every poster on every list seems to have their own preference :-) It would
help if there were proper Reply-To: headers in messages from the mailing list.
> Internally this will be compiled as a looong if () else if () else if ()
> .... chain, because the cases are NOT consecutive. Executing such a
> chain will never be faster, than calculating the index as I posted.
You mean in the JITed machine code? In bytecode it should compile to a
compact lookupswitch, but I admit I'm not familiar with how that would work
on the JIT side.
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