[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [avr-gcc-list] Global variables and ISRs ???
From: |
Vincent Trouilliez |
Subject: |
Re: [avr-gcc-list] Global variables and ISRs ??? |
Date: |
Wed, 07 Sep 2005 17:05:35 +0200 |
On Wed, 2005-09-07 at 16:41 +0200, Joerg Wunsch wrote:
> "David Brown" <address@hidden> wrote:
>
> > ..., and it will also change "multiply by constant" into a series of
> > shifts and adds. The target chip has a hardware multiplier and
> > divider, but they are slower than the shift-and-add sequences.
>
> Unfortunately, AVR-GCC also does this, even though the hardware
> multiplier is faster than a series of shift and add. :-(
Oh noooo, that's crap :-(
Can't we just have an command line option to force the use of the H/W
multiplier ? How should we do to submit this as a top-priority goal for
the next release of avr-gcc ? Is anyone in the avr-gcc team on this
list ?? This needs to be addressed ! :-/
--
Vince
- Re: [avr-gcc-list] Global variables and ISRs ???, (continued)
- Re: [avr-gcc-list] Global variables and ISRs ???, David Brown, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Vincent Trouilliez, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Lars Noschinski, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Vincent Trouilliez, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, David Brown, 2005/09/07
- Re: [avr-gcc-list] DIV instruction (WAS: Global variables and ISRs ???), Vincent Trouilliez, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Alex Wenger, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Vincent Trouilliez, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, David Brown, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Joerg Wunsch, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???,
Vincent Trouilliez <=
- Re: [avr-gcc-list] Global variables and ISRs ???, Joerg Wunsch, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Vincent Trouilliez, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, David Brown, 2005/09/08
- Re: [avr-gcc-list] Global variables and ISRs ???, David Brown, 2005/09/08
- Re: [avr-gcc-list] Global variables and ISRs ???, E. Weddington, 2005/09/08
- Re: [avr-gcc-list] Global variables and ISRs ???, Galen Seitz, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, ericw, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Joerg Wunsch, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Vincent Trouilliez, 2005/09/07
- Re: [avr-gcc-list] Global variables and ISRs ???, Joerg Wunsch, 2005/09/07