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Re: [avr-gcc-list] Global variables and ISRs ???
From: |
Joerg Wunsch |
Subject: |
Re: [avr-gcc-list] Global variables and ISRs ??? |
Date: |
Wed, 7 Sep 2005 16:41:57 +0200 (MET DST) |
"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. :-(
--
J"org Wunsch Unix support engineer
address@hidden http://www.interface-systems.de/~j/
- Re: [avr-gcc-list] Global variables and ISRs ???, (continued)
- Re: [avr-gcc-list] Global variables and ISRs ???, Parthasaradhi Nayani, 2005/09/06
- 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 <=
- 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
- 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