[Bug target/64310] New: libgcc2.c:2051:1: internal compiler error: in curr_insn_transform, at lra-constraints.c:3383

["sebastian dot huber at embedded-brains dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64310

            Bug ID: 64310
           Summary: libgcc2.c:2051:1: internal compiler error: in
                    curr_insn_transform, at lra-constraints.c:3383
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sebastian.huber@embedded-brains.de

Building the arm-rtems target leads to this ICE:

/scratch/git-build/b-gcc-git-arm-rtems4.11/./gcc/xgcc
-B/scratch/git-build/b-gcc-git-arm-rtems4.11/./gcc/ -nostdinc
-B/scratch/git-build/b-gcc-git-arm-rtems4.11/arm-rtems4.11/newlib/ -isystem
/scratch/git-build/b-gcc-git-arm-rtems4.11/arm-rtems4.11/newlib/targ-include
-isystem /home/sh/archive/gcc-git/newlib/libc/include
-B/opt/rtems-4.11/arm-rtems4.11/bin/ -B/opt/rtems-4.11/arm-rtems4.11/lib/
-isystem /opt/rtems-4.11/arm-rtems4.11/include -isystem
/opt/rtems-4.11/arm-rtems4.11/sys-include    -g -O2 -mthumb -march=armv7-r
-mfpu=vfpv3-d16 -mfloat-abi=hard -O2
-I/home/sh/archive/gcc-git/libgcc/../newlib/libc/sys/rtems/include -g -O2
-DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE  -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition 
-isystem ./include   -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector -Dinhibit_libc  -fno-inline -I. -I.
-I../../../../../.././gcc -I/home/sh/archive/gcc-git/libgcc
-I/home/sh/archive/gcc-git/libgcc/. -I/home/sh/archive/gcc-git/libgcc/../gcc
-I/home/sh/archive/gcc-git/libgcc/../include  -DHAVE_CC_TLS  -o _divdc3.o -MT
_divdc3.o -MD -MP -MF _divdc3.dep -DL_divdc3 -c
/home/sh/archive/gcc-git/libgcc/libgcc2.c -fvisibility=hidden -DHIDE_EXPORTS
/home/sh/archive/gcc-git/libgcc/libgcc2.c: In function '__divdc3':
/home/sh/archive/gcc-git/libgcc/libgcc2.c:2051:1: error: unable to generate
reloads for:
 }
 ^
(insn 29 27 30 3 (set (reg/v:DF 120 [ denom ])
        (plus:DF (mult:DF (reg/v:DF 191 [ c ])
                (reg/v:DF 118 [ ratio ]))
            (reg/v:DF 192 [ d ])))
/home/sh/archive/gcc-git/libgcc/libgcc2.c:2011 643 {*muldf3adddf_vfp}
     (nil))
/home/sh/archive/gcc-git/libgcc/libgcc2.c:2051:1: internal compiler error: in
curr_insn_transform, at lra-constraints.c:3383
0x8e9f85 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /home/sh/archive/gcc-git/gcc/rtl-error.c:110
0x81c7b7 curr_insn_transform
        /home/sh/archive/gcc-git/gcc/lra-constraints.c:3383
0x81d39e lra_constraints(bool)
        /home/sh/archive/gcc-git/gcc/lra-constraints.c:4324
0x80dbf4 lra(_IO_FILE*)
        /home/sh/archive/gcc-git/gcc/lra.c:2277
0x7cca89 do_reload
        /home/sh/archive/gcc-git/gcc/ira.c:5391
0x7cca89 execute
        /home/sh/archive/gcc-git/gcc/ira.c:5561
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