AthlonXP-M (UnKnown Unknown) errors in kernel compile

[Nicholas Lozinsky]

System is AMD AthlonXP-M 1500+ on a Sony VAIO Laptop PCG-FXA53.

Using FreeBSD5.4-i386-RELEASE. Installs just fine from CD(s). Once in
/usr/src, I make a customer kernel config, etc...

# config UNIX
# cd ../compile/UNIX
# make depend
# make
<-- output omited -->
(insn 976 5590 980 43 (UnKnown Unknown) -1 (nil)
   (nil))
/usr/src/sys/modules/aic97xxx/ahc/../../../dev/aic97xxx/aic97xxx.c:225:
internal compiler error: in extract_insn, at recog.c:2083
**** Error Code 1
Stop in /usr/src/sys/modules/aic97xxx/ahc.
**** Error Code 1
Stop in /usr/src/sys/modules/aic97xxx.
**** Error Code 1
Stop in /usr/src/sys/modules.
**** Error Code 1
Stop in /usr/src/sys/i386/compile/UNIX

This was a build for the kernel; I am also unable to compile any
ports; simply to say.

I've installed FreeBSD4.10 and 4.11 too, to check functionality and
make sure it's not the hardware; and in fact, everything works jus
fine in 4.x; I'm guessing some compile options, or gcc?

Please do advise. Thank you in advance.