[Bug target/64108] ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64108

--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> ---
Created attachment 34187
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34187&action=edit
another autoreduced testcase (from gcc.c-torture/execute/20020412-1.c)

Hello, I am getting another similiar ICE (-minline-stringops-dynamically is
used it this case, different testcase):

$ gcc -mmemcpy-strategy=libcall:-1:align -minline-stringops-dynamically final.i 
final.i: In function 'foo':
final.i:10:5: internal compiler error: in decide_alg, at
config/i386/i386.c:24506
   d = 
     ^
0xf0f862 decide_alg
        /mnt/svn/gcc-trunk/gcc/config/i386/i386.c:24506
0xf5848f ix86_expand_set_or_movmem(rtx_def*, rtx_def*, rtx_def*, rtx_def*,
rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, bool)
        /mnt/svn/gcc-trunk/gcc/config/i386/i386.c:24759
0x106b68e gen_movmemdi(rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*,
rtx_def*, rtx_def*, rtx_def*, rtx_def*)
        /mnt/svn/gcc-trunk/gcc/config/i386/i386.md:15893
0xb18792 insn_gen_fn::operator()(rtx_def*, rtx_def*, rtx_def*, rtx_def*,
rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*) const
        /mnt/svn/gcc-trunk/gcc/recog.h:310
0xb18792 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
        /mnt/svn/gcc-trunk/gcc/optabs.c:8395
0xb18da8 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
        /mnt/svn/gcc-trunk/gcc/optabs.c:8407
0x8d8a3e emit_block_move_via_movmem
        /mnt/svn/gcc-trunk/gcc/expr.c:1330
0x8d8a3e emit_block_move_hints(rtx_def*, rtx_def*, rtx_def*, block_op_methods,
unsigned int, long, unsigned long, unsigned long, unsigned long)
        /mnt/svn/gcc-trunk/gcc/expr.c:1148
0x797721 expand_builtin_memcpy_args
        /mnt/svn/gcc-trunk/gcc/builtins.c:3243
0x7a746c expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
        /mnt/svn/gcc-trunk/gcc/builtins.c:6288
0x8d45b6 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /mnt/svn/gcc-trunk/gcc/expr.c:10471
0x7cb4c9 expand_expr
        /mnt/svn/gcc-trunk/gcc/expr.h:299
0x7cb4c9 expand_call_stmt
        /mnt/svn/gcc-trunk/gcc/cfgexpand.c:2347
0x7cbbff expand_gimple_stmt_1
        /mnt/svn/gcc-trunk/gcc/cfgexpand.c:3293
0x7cbbff expand_gimple_stmt
        /mnt/svn/gcc-trunk/gcc/cfgexpand.c:3447
0x7d1193 expand_gimple_basic_block
        /mnt/svn/gcc-trunk/gcc/cfgexpand.c:5280
0x7d3686 execute
        /mnt/svn/gcc-trunk/gcc/cfgexpand.c:5889
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