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Re: [avr-gcc-list] GCC 3.0 thread
From: |
J Wunsch |
Subject: |
Re: [avr-gcc-list] GCC 3.0 thread |
Date: |
Thu Jan 18 01:21:04 2001 |
Denis Chertykov <address@hidden> wrote:
> Current avr-as understands `__tmp_reg__ = 0' and
> (for example) `mov __tmp_reg__, r29'.
Ah, ok. I guess this also solves the problem that the old avr-gcc
produced invalid code for something like:
int r24;
void main(void) { r24 = 13; }
% avr-gcc -mmcu=at90s2313 -c foo.c
foo.c: In function `main':
foo.c:4: warning: return type of `main' is not `int'
/var/tmp/ccr59056.s: Assembler messages:
/var/tmp/ccr59056.s:32: Error: Ignoring attempt to re-define symbol
(r24 is being used directly as the assembler name for the variable in
the .data section, but is a reserved word for the assembler.)
>> (Actually, there was a bug in my report, regarding the number of
>> parameters to REGISTER_MOVE_COST() ...
> Show me a code examples and GCC version.
gcc-core-20010101.tar.gz:
gcc-20010101/gcc/config/avr/avr.h (and all the other MD files)
contains:
#define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
: (TO) == STACK_REG ? 12 \
: 2)
gcc-20010101/gcc/regclass.c (and other files) use:
for (i = 0; i < N_REG_CLASSES; i++)
for (j = 0; j < N_REG_CLASSES; j++)
{
int cost = i == j ? 2 : REGISTER_MOVE_COST (i, j);
^^^^ only 2 params
That's been the last version i tried...
--
J"org Wunsch Unix support engineer
address@hidden http://www.interface-systems.de/~j
- [avr-gcc-list] GCC 3.0 thread, Denis Chertykov, 2001/01/08
- Re: [avr-gcc-list] GCC 3.0 thread, J Wunsch, 2001/01/09
- Re: [avr-gcc-list] GCC 3.0 thread, Denis Chertykov, 2001/01/10
- Re: [avr-gcc-list] GCC 3.0 thread, J Wunsch, 2001/01/11
- Re: [avr-gcc-list] GCC 3.0 thread, Denis Chertykov, 2001/01/12
- Re: [avr-gcc-list] GCC 3.0 thread, J Wunsch, 2001/01/15
- Re: [avr-gcc-list] GCC 3.0 thread, Denis Chertykov, 2001/01/16
- Re: [avr-gcc-list] GCC 3.0 thread,
J Wunsch <=
- Re: [avr-gcc-list] GCC 3.0 thread, Denis Chertykov, 2001/01/17