[Bug bootstrap/59864] New: [4.9 regression] RTL check: expected code 'reg', have 'ne' in rhs_regno, at rtl.h:1125

[dimhen at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59864

            Bug ID: 59864
           Summary: [4.9 regression] RTL check: expected code 'reg', have
                    'ne' in rhs_regno, at rtl.h:1125
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dimhen at gmail dot com

Fedora 20/x64

r206606 PASS
r206724 FAIL commpile libgcc with -m32

gcc configured as

~/src/gcc_current/configure --prefix=/usr/local/gcc_current
--enable-checking=yes,df,fold,rtl,tree --enable-languages=c,c++,lto
--enable-plugin --with-tune=native --with-arch=native
--enable-version-specific-runtime-libs --enable-static --enable-multilib
--with-system-zlib


make[5]: Entering directory
`/home/dimhen/build/gcc_current/x86_64-unknown-linux-gnu/32/libgcc'
# If this is the top-level multilib, build all the other
# multilibs.
/home/dimhen/build/gcc_current/./gcc/xgcc
-B/home/dimhen/build/gcc_current/./gcc/
-B/usr/local/gcc_current/x86_64-unknown-linux-gnu/bin/
-B/usr/local/gcc_current/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/local/gcc_current/x86_64-unknown-linux-gnu/include -isystem
/usr/local/gcc_current/x86_64-unknown-linux-gnu/sys-include    -g -O2 -m32 -O2 
-g -O2 -DIN_GCC    -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual
-Wno-format -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition 
-isystem ./include   -fpic -mlong-double-80 -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector   -fpic -mlong-double-80 -I. -I. -I../../.././gcc
-I/home/dimhen/src/gcc_current/libgcc -I/home/dimhen/src/gcc_current/libgcc/.
-I/home/dimhen/src/gcc_current/libgcc/../gcc
-I/home/dimhen/src/gcc_current/libgcc/../include
-I/home/dimhen/src/gcc_current/libgcc/config/libbid -DENABLE_DECIMAL_BID_FORMAT
-DHAVE_CC_TLS  -DUSE_TLS -o _negdi2.o -MT _negdi2.o -MD -MP -MF _negdi2.dep
-DL_negdi2 -c /home/dimhen/src/gcc_current/libgcc/libgcc2.c -fvisibility=hidden
-DHIDE_EXPORTS
/home/dimhen/src/gcc_current/libgcc/libgcc2.c: In function '__negdi2':
/home/dimhen/src/gcc_current/libgcc/libgcc2.c:71:1: internal compiler error:
RTL check: expected code 'reg', have 'ne' in rhs_regno, at rtl.h:1125
 }
 ^
0xc7fb31 rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int,
char const*)
    /home/dimhen/src/gcc_current/gcc/rtl.c:773
0x1ea870c rhs_regno
    /home/dimhen/src/gcc_current/gcc/rtl.h:1125
0x1ea91c8 combine_set_extension
    /home/dimhen/src/gcc_current/gcc/ree.c:303
0x1eabd17 merge_def_and_ext
    /home/dimhen/src/gcc_current/gcc/ree.c:658
0x1ead959 combine_reaching_defs
    /home/dimhen/src/gcc_current/gcc/ree.c:786
0x1eaea39 find_and_remove_re
    /home/dimhen/src/gcc_current/gcc/ree.c:993
0x1eaf41b rest_of_handle_ree
    /home/dimhen/src/gcc_current/gcc/ree.c:1064
0x1eaf4aa execute
    /home/dimhen/src/gcc_current/gcc/ree.c:1103
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[5]: *** [_negdi2.o] Error 1
make[5]: Leaving directory
`/home/dimhen/build/gcc_current/x86_64-unknown-linux-gnu/32/libgcc'