[Bug c/121512] New: internal compiler error: in generate_insn, at config/riscv/riscv-vector-builtins.cc:4470

[xypron.glpk at gmx dot de via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121512

            Bug ID: 121512
           Summary: internal compiler error: in generate_insn, at
                    config/riscv/riscv-vector-builtins.cc:4470
           Product: gcc
           Version: 15.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: xypron.glpk at gmx dot de
  Target Milestone: ---

I have built gcc 15.1 with

--with-arch=rv64i_m_a_f_d_c_b_v_zic64b_zicbom_zicbop_zicboz_ziccamoa_ziccif_zicclsm_ziccrse_zicntr_zicond_zicsr_zihintntl_zihintpause_zihpm_zimop_zmmul_za64rs_zaamo_zalrsc_zawrs_zfa_zfhmin_zca_zcb_zcd_zcmop_zba_zbb_zbs_zkt_zvbb_zve32f_zve32x_zve64d_zve64f_zve64x_zvfhmin_zvkb_zvkt_zvl128b_zvl32b_zvl64b_supm

When using the gcc to build 'highway' I received an error

during RTL pass: expand
In function ‘BitCastToByte’,
    inlined from ‘BitCast’ at
/usr/src/highway-1.2.0-3ubuntu3/hwy/ops/rvv-inl.h:901:33,
    inlined from ‘Zero’ at
/usr/src/highway-1.2.0-3ubuntu3/hwy/ops/rvv-inl.h:695:17,
    inlined from ‘operator()’ at
/usr/src/highway-1.2.0-3ubuntu3/hwy/examples/benchmark.cc:118:18,
    inlined from ‘operator()’ at
/usr/src/highway-1.2.0-3ubuntu3/hwy/examples/benchmark.cc:75:61,
    inlined from ‘CallClosure’ at
/usr/src/highway-1.2.0-3ubuntu3/hwy/nanobenchmark.h:154:14:
/usr/src/highway-1.2.0-3ubuntu3/hwy/ops/rvv-inl.h:866:1: internal compiler
error: in generate_insn, at config/riscv/riscv-vector-builtins.cc:4470

The buildlog is available at
https://launchpadlibrarian.net/810429006/buildlog_ubuntu-questing-riscv64.highway_1.2.0-3ubuntu3_BUILDING.txt.gz