Re: Unrolling loops - ReadList.com

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Unrolling loops
\ Joseph Jezak (25 Jul 2007)
. \ Ian Lance Taylor (26 Jul 2007)
. . \ Joseph Jezak (27 Jul 2007)

Subject:	Re: Unrolling loops
Group:	Gcc-help
From:	Joseph Jezak
Date:	27 Jul 2007

Ian Lance Taylor wrote:
> Joseph Jezak <josejx> writes:
>
>> I was looking at the binary output from a simple loop that's been
>> compiled with -funroll-all-loops and I noticed that gcc will only
>> unroll a loop if the loop repeats less than 16 times. Is there a
>> way to turn this off? Is there a reason for it?
>
> I don't think that is always true, though it may well be true for your
> test case.
>
> You can control this behaviour in various ways. Look at the
> documentation for the --param option, and the parameters like
> max-unrolled-insns.
>
> Ian
>

Thank you very much! A combination of the max-unrolled-insns and
max-unroll-times parameters made gcc behave like I needed it to.

Thanks again!
-Joe