[Bug target/108006] New: [13 Regression] ICE in aarch64_move_imm building 502.gcc_r

[ktkachov at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108006

            Bug ID: 108006
           Summary: [13 Regression] ICE in aarch64_move_imm building
                    502.gcc_r
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ktkachov at gcc dot gnu.org
  Target Milestone: ---

Building 502.gcc_r from SPEC2017 with -O2 -mcpu=neoverse-v1 ICEs with trunk.
Reduced testcase:

void c();

short *foo;
short *bar;
void
a() {
  for (bar; bar < foo; bar++)
    *bar = 999;
  c();
}

backtrace is:
during RTL pass: expand
ice.c: In function a:
ice.c:8:10: internal compiler error: in aarch64_move_imm, at
config/aarch64/aarch64.cc:5692
    8 |     *bar = 999;
      |     ~~~~~^~~~~
0x129db4c aarch64_move_imm(unsigned long, machine_mode)
        $SRC/gcc/config/aarch64/aarch64.cc:5692
0x12c01cd aarch64_expand_sve_const_vector
        $SRC/gcc/config/aarch64/aarch64.cc:6516
0x12c63cb aarch64_expand_mov_immediate(rtx_def*, rtx_def*)
        $SRC/gcc/config/aarch64/aarch64.cc:6996
0x18c3248 gen_movvnx8hi(rtx_def*, rtx_def*)
        $SRC/gcc/config/aarch64/aarch64-sve.md:662
0xa09062 rtx_insn* insn_gen_fn::operator()<rtx_def*, rtx_def*>(rtx_def*,
rtx_def*) const
        $SRC/gcc/recog.h:407
0xa09062 emit_move_insn_1(rtx_def*, rtx_def*)
        $SRC/gcc/expr.cc:4172
0xa095bb emit_move_insn(rtx_def*, rtx_def*)
        $SRC/gcc/expr.cc:4342
0x9db8aa copy_to_mode_reg(machine_mode, rtx_def*)
        $SRC/gcc/explow.cc:654
0xd0607d maybe_legitimize_operand
        $SRC/gcc/optabs.cc:7809
0xd0607d maybe_legitimize_operands(insn_code, unsigned int, unsigned int,
expand_operand*)
        $SRC/gcc/optabs.cc:7941
0xd06366 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
        $SRC/gcc/optabs.cc:7960
0xd06592 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
        $SRC/gcc/optabs.cc:8005
0xd05b17 expand_insn(insn_code, unsigned int, expand_operand*)
        $SRC/gcc/optabs.cc:8036
0xb53fb7 expand_partial_store_optab_fn
        $SRC/gcc/internal-fn.cc:2878
0xb54307 expand_MASK_STORE
        $SRC/gcc/internal-fn.def:141
0xb59960 expand_internal_call(internal_fn, gcall*)
        $SRC/gcc/internal-fn.cc:4436
0xb5997a expand_internal_call(gcall*)
        $SRC/gcc/internal-fn.cc:4444
0x8b6161 expand_call_stmt
        $SRC/gcc/cfgexpand.cc:2737
0x8b6161 expand_gimple_stmt_1