gcc ICEs compiling nuq (single player part of Quakeforge --
http://www.quakeforge.net) when compiling with all optimization as enabled
by default (-O6).  ICE goes away when compiled with -O2 or less.  Fails
under gcc shipped in 7.0 as well as gcc-2.96-63 from rawhide, but works
with egcs

gcc -DHAVE_CONFIG_H -I. -I. -I../include -I../include   -I/usr/include/SDL
-D_REENTRANT  -I/usr/X11R6/include      -O6 -ffast-math -funroll-loops
-fomit-frame-pointer -fexpensive-optimizations -march=pentiumpro
-malign-loops=2 -malign-jumps=2 -malign-functions=2  -c net_main.c
-save-temps -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.0)
 /usr/lib/gcc-lib/i386-redhat-linux/2.96/cpp0 -lang-c -v -I. -I.
-I../include -I../include -I/usr/include/SDL -I/usr/X11R6/include
-D__GNUC__=2 -D__GNUC_MINOR__=96 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix
-Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem(posix)
-D__OPTIMIZE__ -D__FAST_MATH__ -Acpu(i386) -Amachine(i386) -Di386 -D__i386
-D__i386__ -D__pentiumpro -D__pentiumpro__ -D__tune_pentiumpro__
-DHAVE_CONFIG_H -D_REENTRANT net_main.c net_main.i
GNU CPP version 2.96 20000731 (Red Hat Linux 7.0) (cpplib)
 (i386 Linux/ELF)
ignoring nonexistent directory "/usr/i386-redhat-linux/include"
ignoring duplicate directory "."
ignoring duplicate directory "../include"
#include "..." search starts here:
#include <...> search starts here:
 .
 ../include
 /usr/include/SDL
 /usr/X11R6/include
 /usr/local/include
 /usr/lib/gcc-lib/i386-redhat-linux/2.96/include
 /usr/include
End of search list.
 /usr/lib/gcc-lib/i386-redhat-linux/2.96/cc1 net_main.i -quiet -dumpbase
net_main.c -march=pentiumpro -malign-loops=2 -malign-jumps=2
-malign-functions=2 -O6 -version -ffast-math -funroll-loops
-fomit-frame-pointer -fexpensive-optimizations -o net_main.s
GNU C version 2.96 20000731 (Red Hat Linux 7.0) (i386-redhat-linux)
compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.0).
net_main.c: In function `NET_SendToAll':
net_main.c:780: Internal compiler error in gen_lowpart, at emit-rtl.c:1181
Please submit a full bug report.
See <URL:http://bugzilla.redhat.com/bugzilla/> for instructions.