[avr-gcc-list] Compiler bug ?

[Larry Barello]

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


---- Winavr Version -----

Reading specs from c:\WinAVR\bin\..\lib\gcc-lib\avr\3.3\specs
Configured with:
../configure --prefix=/e/avrdev/install --target=avr --enable-language
s=c,c++ --disable-nls
Thread model: single
gcc version 3.3 20030310 (prerelease)

--- foo.c ---

#define DEADBAND_LOW (20)     // +/-20 us

char DoDeadBand(char raw)
{
    char deadband;

    deadband = DEADBAND_LOW;

    if (raw > deadband)
    {
        return raw - deadband;
    }
    else if (raw < -deadband)
    {
        return raw + deadband;
    }
    else
    {
        return 0;
    }
}