x86_64: Exclude SSE, AVX and FMA4 variants in libm multiarch

When glibc is built with ISA level 3 or higher by default, the resulting
glibc binaries won't run on SSE or FMA4 processors.  Exclude SSE, AVX and
FMA4 variants in libm multiarch when ISA level 3 or higher is enabled by
default.

When glibc is built with ISA level 2 enabled by default, only keep SSE4.1
variant.

Fixes BZ 31335.

NB: elf/tst-valgrind-smoke test fails with ISA level 4, because valgrind
doesn't support AVX512 instructions:

https://bugs.kde.org/show_bug.cgi?id=383010

Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit 9f78a7c1d0963282608da836b840f0d5ae1c478e)

1 files changed, 28 insertions, 0 deletions

diff --git a/sysdeps/x86_64/fpu/multiarch/s_floorf-avx.S b/sysdeps/x86_64/fpu/multiarch/s_floorf-avx.S
new file mode 100644
index 0000000000..c378baae8e
--- /dev/null
+++ b/sysdeps/x86_64/fpu/multiarch/s_floorf-avx.S
@@ -0,0 +1,28 @@
+/* AVX implementation of floorf function.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <libm-alias-float.h>
+
+	.text
+ENTRY(__floorf)
+	vroundss $9, %xmm0, %xmm0, %xmm0
+	ret
+END(__floorf)
+
+libm_alias_float (__floor, floor)