https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120922
Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tnfchris at gcc dot gnu.org
--- Comment #2 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Looks like it's because a very high VF was chosen
optimized: loop vectorized using masked 1024 byte vectors and unroll factor 256
Updating vectorization factor to 256.
which results in VF being higher than the max value of the type (signed char),
so the range ends up truncating to 0.
Though I'm not sure yet how it was working before, the shift should have
resulted in 0 too.
Could someone help me with the configure flags to check? with
--target=riscv64-unknown-linux-gnu --disable-bootstrap --enable-languages=c,c++
--with-arch=rv64gc --with-abi=lp64d
I end up with:
> ./gcc/cc1 -fsigned-char -fno-strict-aliasing -fwrapv -march=rv64gcv_zvl1024b
> -mrvv-vector-bits=zvl -mrvv-max-lmul=m8 -O3 ice.c -o -
cc1: error: ABI requires ‘-march=rv32’
