bug in char loop vars with -mcpu=ev56

[Tom Holroyd <tomh at taz dot ccs dot fau dot edu>]

% gcc -v
Reading specs from
/usr/local/lib/gcc-lib/alphaev56-unknown-linux-gnu/egcs-2.90.29/specs
gcc version egcs-2.90.29 980515 (egcs-1.0.3 release)

% gcc -mcpu=ev56 moo.c
/tmp/cca01856.s: Assembler messages:
/tmp/cca01856.s:21: Error: macro requires $at register while noat in effect
/tmp/cca01856.s:23: Error: macro requires $at register while noat in effect
/tmp/cca01856.s:30: Error: macro requires $at register while noat in effect
/tmp/cca01856.s:32: Error: macro requires $at register while noat in effect

moo.c:
main ()
{
  char c;
  for (c = 'A'; c <= 'Z'; c++)
    {
    }
}

% as -v
GNU assembler version 2.8.1 (alpha-unknown-linux-gnu), using BFD version
linux-2.8.1.0.1

Dr. Tom Holroyd
Behavior Control Lab, Human Informatics Dept.            The basis of
National Institute of Bioscience and Human-Technology    stability is
1-1 Higashi, Tsukuba-shi, Ibaraki 305, Japan             instability.
The 9th Amendment of the U.S. Constitution:
"The enumeration in the Constitution, of certain rights, shall not be
construed to deny or disparage others retained by the people."