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[Bug math/21966] AVX2 mathvec functions use FMA without checking
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 18 Aug 2017 13:20:06 +0000
- Subject: [Bug math/21966] AVX2 mathvec functions use FMA without checking
- Auto-submitted: auto-generated
- References: <bug-21966-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=21966
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=098b9dd46814f7e624e42a8844c169f3edc67052
commit 098b9dd46814f7e624e42a8844c169f3edc67052
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Aug 18 06:18:55 2017 -0700
x86-64: Check FMA_Usable in ifunc-mathvec-avx2.h [BZ #21966]
Since the AVX2 version of mathvec functions uses FMA, it can only be
used when FMA is usable.
[BZ #21966]
* sysdeps/x86_64/fpu/multiarch/ifunc-mathvec-avx2.h
(IFUNC_SELECTOR): Don't use the AVX2 version if FMA isn't
usable.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
sysdeps/x86_64/fpu/multiarch/ifunc-mathvec-avx2.h | 3 ++-
2 files changed, 9 insertions(+), 1 deletions(-)
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