On Thu, 18 May 2023 at 16:37, Joern Rennecke <joern.rennecke@embecosm.com> wrote
in https://gcc.gnu.org/pipermail/gcc-patches/2023-May/618928.html :
>
> This breaks building libstdc++-v3 for
> -march=rv32imafdcv_zicsr_zifencei_zba_zbb_zbc_zbs_zve32f_zve32x_zve64d_zve64f_zve64x_zvl128b_zvl32b_zvl64b
> -mabi=ilp32f .

Sorry, I forgot the ChangeLog entry for my patch and missed the [v2]
part of the subject.

2023-05-18  Joern Rennecke  <joern.rennecke@embecosm.com>

gcc/ChangeLog:
        * config/riscv/constraints.md (DsS, DsD): Restore agreement
with shiftm1 mode attribute.