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From: "Luca Barbato" <lu_zero@gentoo.org>
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Reply-To: gentoo-dev@lists.gentoo.org, "Luca Barbato" <lu_zero@gentoo.org>
Message-ID: <1720212549.2baeb8c8987f9214080ce2a8c94c0e93ee7af217.lu_zero@gentoo>
Subject: [gentoo-commits] repo/gentoo:master commit in: eclass/
X-VCS-Repository: repo/gentoo
X-VCS-Files: eclass/flag-o-matic.eclass
X-VCS-Directories: eclass/
X-VCS-Committer: lu_zero
X-VCS-Committer-Name: Luca Barbato
X-VCS-Revision: 2baeb8c8987f9214080ce2a8c94c0e93ee7af217
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Date: Fri, 5 Jul 2024 20:50:13 +0000 (UTC)
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commit: 2baeb8c8987f9214080ce2a8c94c0e93ee7af217
Author: Luca Barbato <lu_zero <AT> gentoo <DOT> org>
AuthorDate: Fri Jul 5 09:31:57 2024 +0000
Commit: Luca Barbato <lu_zero <AT> gentoo <DOT> org>
CommitDate: Fri Jul 5 20:49:09 2024 +0000
URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=2baeb8c8
flag-o-matic.eclass: allow -mstrict-align and -mvector-strict-align
It is needed to make sure vector unaligned load/store aren't inserted
when the riscv cpu does not allow them.
See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115789
Signed-off-by: Luca Barbato <lu_zero <AT> gentoo.org>
eclass/flag-o-matic.eclass | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/eclass/flag-o-matic.eclass b/eclass/flag-o-matic.eclass
index ecac452aa0ef..c6b1ad80e12e 100644
--- a/eclass/flag-o-matic.eclass
+++ b/eclass/flag-o-matic.eclass
@@ -129,6 +129,10 @@ _setup-allowed-flags() {
# needed for arm64 (and in particular SCS)
-ffixed-x18
+ # needed for riscv (to prevent unaligned vector access)
+ # See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115789
+ -mstrict-align -mvector-strict-align
+
# gcc 4.5
-mno-fma4 -mno-movbe -mno-xop -mno-lwp
# gcc 4.6