Hi! Richi suggested to mention the PR116029 bug in 11.5.0 caveats as we can't fix that anymore.
Here is a patch for that, which attempts to describe (my limited understanding of) the issue. As TARGET_CPU_generic is now 64, when config.gcc doesn't set TARGET_CPU_DEFAULT, we end up with TARGET_CPU_DEFAULT (64 | (AARCH64_CPU_DEFAULT_FLAGS << 6)) which is treated as I think TARGET_CPU_cortexa34 | ((AARCH64_CPU_DEFAULT_FLAGS | AARCH64_FL_SIMD) << 6)) Ok for wwwdocs? diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html index e010cd08..26189772 100644 --- a/htdocs/gcc-11/changes.html +++ b/htdocs/gcc-11/changes.html @@ -1164,5 +1164,20 @@ known to be fixed in the 11.5 release. This list might not be complete (that is, it is possible that some PRs that have been fixed are not listed here).</p> +<h3>Caveats</h3> + +<h4>aarch64</h4> +<ul> + <li> + Due to a late introduced bug if the compiler is configured without + explicit <code>--with-arch=</code>, <code>--with=cpu=</code> and/or + <code>--with-tune=</code> configure options the compiler without + explicit <code>-march=</code> etc. options might act as if asked + for <code>cortex-a34</code>. This can be fixed by appling manually the + <a href="https://gcc.gnu.org/r12-8060";>r12-8060</a> commit on top + of GCC 11.5.0. See <a href="https://gcc.gnu.org/PR116029";>PR116029</a> + for more details. + </li> +</ul> </body> </html> Jakub
