Why is WPO(whole-program optimization) not doing any improvements in my program size? (FPC 2.4.0)

Posted by Gregory Smith on Stack Overflow See other posts from Stack Overflow or by Gregory Smith
Published on 2010-02-25T04:07:06Z Indexed on 2010/04/10 22:43 UTC
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freepascal

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optimization

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fpc

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compilation

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size

I use FPC 2.4.0 for WinXP(binary from the official page), also tryed with same version but compiled from source on my comp. I put something like this:

I:\pascal\fpc-2.4.0.source\fpc-2.4.0\compiler\ppc386 -FWserver-1.wpo -OWsymbolliveness -CX -XX -Xs- -al -Os -oServer1.o Server I:\pascal\fpc-2.4.0.source\fpc-2.4.0\compiler\ppc386 -FWserver-2.wpo -OWsymbolliveness -Fwserver-1.wpo -Owsymbolliveness -CX -XX -Xs- -al -Os -oServer2.o Server ..(up to 100 times)

but always same .wpo files, and same .o sizes(.s, assembly files change intermittently)

I also not(through compiler messages), that not used variables are still alive. Also tryed -OWall -owall What am i doing wrong?

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