[Bug middle-end/81666] New: GLIBC build failed with arm/aarch64 linux cross toolchain

["amker at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81666

            Bug ID: 81666
           Summary: GLIBC build failed with arm/aarch64 linux cross
                    toolchain
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: amker at gcc dot gnu.org
  Target Milestone: ---

Created attachment 41889
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41889&action=edit
compressed preprocessed c code

Hi,
With r250771, GCC failed to build glibc for arm/aarch64 linux cross toolchain:

during RTL pass: expand
loadlocale.c: In function ‘_nl_load_locale’:
loadlocale.c:199:7: internal compiler error: in emit_move_insn, at expr.c:3704
       __mempcpy (__mempcpy (__mempcpy (newp, file->filename, filenamelen),
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     
0x80902b emit_move_insn(rtx_def*, rtx_def*)
        /test/source/gcc/gcc/expr.c:3703
0x6d2271 expand_builtin_memory_copy_args
        /test/source/gcc/gcc/builtins.c:3514
0x6d48d7 expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
        /test/source/gcc/gcc/builtins.c:6847
0x80454c expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /test/source/gcc/gcc/expr.c:10848
0x6f8a9c expand_expr
        /test/source/gcc/gcc/expr.h:276
0x6f8a9c expand_call_stmt
        /test/source/gcc/gcc/cfgexpand.c:2664
0x6f8a9c expand_gimple_stmt_1
        /test/source/gcc/gcc/cfgexpand.c:3583
0x6f8a9c expand_gimple_stmt
        /test/source/gcc/gcc/cfgexpand.c:3749
0x6f9c1a expand_gimple_basic_block
        /test/source/gcc/gcc/cfgexpand.c:5751
0x6ff986 execute
        /test/source/gcc/gcc/cfgexpand.c:6358
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

Preprocessed file for aarch64-none-linux-gnu toolchain attached.  Reproduce
with below command line:
$ aarch64-none-linux-gnu-gcc -std=gnu11 -fgnu89-inline  -O2  -Wall -Wundef
-Wwrite-strings -fmerge-all-constants -fno-stack-protector -frounding-math -g
-Wstrict-prototypes -Wold-style-definition     -ftls-model=initial-exec  -xc
/tmp/loadlocale.E -o /tmp/loadlocale.S -S