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question about the schedulling
- From: "Jung Woon Ho" <unosoft at hotmail dot com>
- To: gcc-help at gcc dot gnu dot org
- Cc: unosoft at hotmail dot com
- Date: Wed, 02 Jul 2003 18:38:52 +0000
- Subject: question about the schedulling
- Bcc:
Hi,
Im trying to optimize my code, from the C level (specially schedulling the
instruction in the C level).
I would like to know what are the key points that I have to keep in mind in
order to make my code friendly to the gcc scheduler. I tried to modfy the
code manually to increase parallelism, decrease data dependancy, etc....
but since gcc takes my c files and re-schedules everything, my optimizations
are not transparent in the assembly file. And often my optimizations makes
the program run slower.
Can anybody give a hint on this problem?
Is there any documentation in the gcc scheduler?
I know that there are a lots of techniques in improving performance, but I'm
interested in the
instrcution schedulling part.
thank you.
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