Internal Compiler Error (ICE) building gcc 8.3.0 on ppc64 Linux

[Brian Groose]

I am trying to build gcc 8.3.0 on linux ppc64.  I have successfully
built 5.3.0 without issue on this machine.  When I build 8.3.0,
however, I hit this error:

/root/gcc/act-gcc-8.3.0-sandbox/build-gcc/./gcc/xgcc
-B/root/gcc/act-gcc-8.3.0-sandbox/build-gcc/./gcc/
-B/opt/act-gcc-8.3.0/powerpc64-unknown-linux-gnu/bin/
-B/opt/act-gcc-8.3.0/powerpc64-unknown-linux-gnu/lib/ -isystem
/opt/act-gcc-8.3.0/powerpc64-unknown-linux-gnu/include -isystem
/opt/act-gcc-8.3.0/powerpc64-unknown-linux-gnu/sys-include    -g -O2
-O2  -g -O2 -DIN_GCC    -W -Wall -Wwrite-strings -Wcast-qual
-Wno-format -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition  -isystem ./include   -fPIC -mlong-double-128
-mno-minimal-toc -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector   -fPIC -mlong-double-128 -mno-minimal-toc -I.
-I. -I../.././gcc -I/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc
-I/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/.
-I/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/../gcc
-I/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/../include
-I/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/../libdecnumber/dpd
-I/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/../libdecnumber
-DHAVE_CC_TLS  -o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep
-DL_muldi3 -c /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/libgcc2.c
-fvisibility=hidden -DHIDE_EXPORTS
during GIMPLE pass: store-merging
In file included from
/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/libgcc2.c:56:
/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/libgcc2.c: In
function ‘__multi3’:
/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/libgcc2.h:203:20:
internal compiler error: Segmentation fault
 #define __NDW(a,b) __ ## a ## ti ## b
                    ^~
/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/libgcc2.h:273:18:
note: in expansion of macro ‘__NDW’
 #define __muldi3 __NDW(mul,3)
                  ^~~~~
/root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/libgcc/libgcc2.c:548:1:
note: in expansion of macro ‘__muldi3’
 __muldi3 (DWtype u, DWtype v)
 ^~~~~~~~
0x10f7d943 crash_signal
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/toplev.c:325
0x11f9b43c trim_filename(char const*)
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/diagnostic.c:1023
0x11f9d31b fancy_abort(char const*, int, char const*)
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/diagnostic.c:1508
0x115085d7 inchash::add_expr(tree_node const*, inchash::hash&, unsigned int)
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/tree.c:7426
0x10fd23a3 iterative_hash_expr
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/tree.h:4944
0x10fd94b3 tree_operand_hash::hash(tree_node* const&)
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/tree-hash-traits.h:34
0x11d677af hash
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/hash-map-traits.h:49
0x11d6836f get
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/hash-map.h:161
0x11d79437 process_store
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/gimple-ssa-store-merging.c:4347
0x11d79b23 execute
        /root/gcc/act-gcc-8.3.0-sandbox/gcc-8.3.0/gcc/gimple-ssa-store-merging.c:4455


Configure (building out of tree):
configure --prefix=/opt/act-gcc-8.3.0 --enable-languages=c,c++
--disable-multilib

System:
SLES 11 SP4
Linux atmlpar32 3.0.101-63-ppc64 #1 SMP Tue Jun 23 16:02:31 UTC 2015
(4b89d0c) ppc64 ppc64 ppc64 GNU/Linux

I've tried this using the system's binutils and also binutils 2.32
with the same results (binutils 2.32 built OK).

I was previously hitting oomkiller because this host only has 500MB of
RAM.  It's been increased to 1500MB and I no longer see oomkiller in
syslog, so I don't think that's the issue any longer.

Any ideas here, or should I file a bug?