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Tue, 23 Jul 2024 12:19:15 +0200 Date: Tue, 23 Jul 2024 12:19:15 +0200 From: Jakub Jelinek To: Kyrylo Tkachov , Richard Sandiford , Richard Biener Cc: gcc-patches@gcc.gnu.org Subject: [wwwdocs] Add aarch64 11.5.0 caveat Message-ID: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline X-Spam-Status: No, score=-9.7 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Jakub Jelinek Errors-To: gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org 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? Jakub 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).

+

Caveats

+ +

aarch64

+
    +
  • + Due to a late introduced bug if the compiler is configured without + explicit --with-arch=, --with=cpu= and/or + --with-tune= configure options the compiler without + explicit -march= etc. options might act as if asked + for cortex-a34. This can be fixed by appling manually the + r12-8060 commit on top + of GCC 11.5.0. See PR116029 + for more details. +
    • +