[Bug target/113087] [14] RISC-V rv64gcv vector: Runtime mismatch with rv64gc

["patrick at rivosinc dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113087

--- Comment #30 from Patrick O'Neill <patrick at rivosinc dot com> ---
(In reply to Li Pan from comment #29)
> Thanks a lot for the summary. Could you please help to share some more
> information about the spec2017 for above data? Like data set (test, train,
> or ref), the enviornment (qemu, spike, or hardware) as well as the spec
> config file. Just would like to make sure we are on the same page for the
> failures and reproducible from others.

Hi Pan,

We use nix to build/run spec so it's a bit opaque to me but I've extracted out:
ref data set
qemu
flags:
"-Ofast"
"-mtune=generic-ooo"
"-march=rv64imafdcv_zba_zbb_zbs_zicond_zfa"
"-fno-lto"
"-ftree-vectorize"
"--param=riscv-autovec-preference=scalable"

There are other flags that are are injected by the nix harness and I'm in the
process of pulling them out. With these flags you should at least see the cam4
failure. Vineet is looking at the cam4 failure and is planning to open a
bugzilla with details.

Thanks,
Patrick