Dear tiger...@viatech.com.cn,

In message <fe7aded5c2218b4786c09cd97dc4c49fa88...@exchbj02.viatech.com.bj> you 
wrote:
>
> >May I ask why you want to use other optimization levels?  Do you just
> >hope that your code may run faster, or do you have actual proof (i. e.
> >measurements) that this is the case?  It would be interesting if you
> >could share any such measured results.
> 
> Not for running faster.
> I just think:
> If turn off compiler optimization, some bugs would be analysed easily.

Hm... that does not match my experience.  A pretty large percentage of
actual bugs is of Heisenbug nature.  Changin the buil environment will
create a completely different image with different behaviour - you may
be lucky, but too often the changes actually side-track you from the
actual issues.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
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by  the splendor and vivacity of its appetite, which, however, is in-
ferior in scope, for it balks at pig.                - Ambrose Bierce
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