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From: "juzhe.zhong at rivai dot ai" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/99395] s116 benchmark of TSVC is vectorized
 by clang and not by gcc
Date: Sat, 07 Oct 2023 09:10:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99395

JuzheZhong <juzhe.zhong at rivai dot ai> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |juzhe.zhong at rivai dot ai

--- Comment #6 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
Hi, Richi.

Recently, I am evaluating TSVC performance of GCC:

I found both RISC-V and aarch64 can SLP vectorize it:

https://godbolt.org/z/ssvTxxjeT

Both GCC-13 and trunk GCC can SLP it like LLVM (GCC-12 failed) but with
-fno-vect-cost-model.

I suspect we should adjust Vector COST model (I don't think we should ajust
cost
model in target backend since LLVM by default vectorize such case).=