[Bug target/94678] aarch64: unexpected result with -mgeneral-regs-only and sve

[felix.yang at huawei dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94678

--- Comment #1 from Fei Yang <felix.yang at huawei dot com> ---
crash log for test2.c:

during RTL pass: expand
foo.c: In function 'f2':
foo.c:14:10: internal compiler error: in emit_move_insn, at expr.c:3815
   14 |   return svadd_m (*x, *y, 1);
      |          ^~~~~~~~~~~~~~~~~~~
0xd21797 emit_move_insn(rtx_def*, rtx_def*)
        ../../gcc-git/gcc/expr.c:3814
0xcf52cb copy_to_mode_reg(machine_mode, rtx_def*)
        ../../gcc-git/gcc/explow.c:634
0x11021f7 maybe_legitimize_operand
        ../../gcc-git/gcc/optabs.c:7283
0x1102caf maybe_legitimize_operands(insn_code, unsigned int, unsigned int,
expand_operand*)
        ../../gcc-git/gcc/optabs.c:7415
0x1102d9b maybe_gen_insn(insn_code, unsigned int, expand_operand*)
        ../../gcc-git/gcc/optabs.c:7434
0x1103223 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
        ../../gcc-git/gcc/optabs.c:7477
0x11032c3 expand_insn(insn_code, unsigned int, expand_operand*)
        ../../gcc-git/gcc/optabs.c:7508
0x10edec3 expand_vector_broadcast(machine_mode, rtx_def*)
        ../../gcc-git/gcc/optabs.c:419
0x1859ec3 aarch64_sve::function_expander::add_input_operand(insn_code,
rtx_def*)
        ../../gcc-git/gcc/config/aarch64/aarch64-sve-builtins.cc:2790
0x185b1b3 aarch64_sve::function_expander::use_cond_insn(insn_code, unsigned
int)
        ../../gcc-git/gcc/config/aarch64/aarch64-sve-builtins.cc:3078
0x185b753 aarch64_sve::function_expander::map_to_rtx_codes(rtx_code, rtx_code,
int, unsigned int)
        ../../gcc-git/gcc/config/aarch64/aarch64-sve-builtins.cc:3224
0x18768d7
aarch64_sve::rtx_code_function::expand(aarch64_sve::function_expander&) const
        ../../gcc-git/gcc/config/aarch64/aarch64-sve-builtins-functions.h:211
0x185b9fb aarch64_sve::function_expander::expand()
        ../../gcc-git/gcc/config/aarch64/aarch64-sve-builtins.cc:3281
0x185dcab aarch64_sve::expand_builtin(unsigned int, tree_node*, rtx_def*)
        ../../gcc-git/gcc/config/aarch64/aarch64-sve-builtins.cc:3569
0x17c0ceb aarch64_expand_builtin
        ../../gcc-git/gcc/config/aarch64/aarch64.c:13147
0xb3782f expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
        ../../gcc-git/gcc/builtins.c:7736
0xd4039b expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc-git/gcc/expr.c:11132
0xd3338f expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
        ../../gcc-git/gcc/expr.c:8359
0xd28337 store_expr(tree_node*, rtx_def*, int, bool, bool)
        ../../gcc-git/gcc/expr.c:5755
0xd26d27 expand_assignment(tree_node*, tree_node*, bool)
        ../../gcc-git/gcc/expr.c:5514
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