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Re: [avr-gcc-list] Compiler bug ?

From: E. Weddington
Subject: Re: [avr-gcc-list] Compiler bug ?
Date: Wed, 16 Apr 2003 17:26:34 -0600

On 16 Apr 2003 at 15:14, Larry Barello wrote:

> avr-gcc -S -Os -fno-reorder-blocks -Wall -g -mmcu=attiny26 foo.c -o
> foo.s foo.c: In function `DoDeadBand': foo.c:21: error: unable to
> generate reloads for: (insn:QI 31 28 32 2 006B7390 (set (cc0)
>         (compare (sign_extend:HI (reg/v:QI 24 r24 [42]))
>             (const_int -20 [0xffffffec]))) 94 {*cmpqi_sign_extend}
> (nil)
>     (nil))
> foo.c:21: internal compiler error: in find_reloads, at
> gcc/reload.c:3636
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
> make: *** [foo.s] Error 1

Sorry, I sent too soon.

I realize that -funsigned-char is not what you want to do for the 
code (comparing signed chars), and -fsigned-char causes the compiler 
ICE to show up as well.

We'll see what the latest gcc snapshot does.


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