egcs-19980608 build failure on HPUX 10.01

[Tomislav Goles <tom at ait-tech dot com>]

I just tried to build egcs-19980608 on HPUX 10.01 but it failed (building this
same snapshot on solaris 2.5.1 worked fine).

# uname -a
HP-UX pikard B.10.01 A 9000/735 2001239217 two-user license

configure flags: --prefix=/usr/local/egcs-19980608 --with-gnu-as

Here is what happened:

/opt/src/egcs-19980608/gcc/move-if-change tmp-under.c underscore.c
rm -f tmp-dum.c tmp-dum.s
touch s-under
stage1/xgcc -Bstage1/ -c  -DIN_GCC    -W -Wall -O2 -g -O6   -DHAVE_CONFIG_H -DHAIFA    -I. -I/opt/src/egcs-19980608/gcc -I/opt/src/egcs-19980608/gcc/config underscore.c
rm -f collect2
stage1/xgcc -Bstage1/  -DIN_GCC    -W -Wall -O2 -g -O6   -DHAVE_CONFIG_H -DHAIFA  -o collect2 collect2.o tlink.o hash.o \
  cplus-dem.o underscore.o version.o choose-temp.o obstack.o alloca.o    
echo "" > tmp-runtime
echo "/* This file is automatically generated */" >objc/runtime-info.h
./cc1obj -print-objc-runtime-info tmp-runtime >>objc/runtime-info.h
rm -f tmp-runtime
./xgcc -B./  -DIN_GCC    -W -Wall -O2 -g -O6  -I./include  -I. -I/opt/src/egcs-19980608/gcc -I/opt/src/egcs-19980608/gcc/config \
-c /opt/src/egcs-19980608/gcc/objc/hash.c -o objc/hash.o
/opt/src/egcs-19980608/gcc/haifa-sched.c:7593: Internal compiler error in function schedule_region
gmake[2]: *** [objc/hash.o] Error 1
gmake[2]: Leaving directory `/opt/src/objdir/gcc'
gmake[1]: *** [bootstrap] Error 2
gmake[1]: Leaving directory `/opt/src/objdir/gcc'
gmake: *** [bootstrap] Error 2