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[Bug dynamic-link/20139] Upper part of zmm is zeroed if Glibc built with --disable-multi-arch and AS not supporting AVX512
- From: "andrew.n.senkevich at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 30 May 2016 17:30:55 +0000
- Subject: [Bug dynamic-link/20139] Upper part of zmm is zeroed if Glibc built with --disable-multi-arch and AS not supporting AVX512
- Auto-submitted: auto-generated
- References: <bug-20139-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20139
--- Comment #2 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
(In reply to Florian Weimer from comment #1)
> Doesn't the application need to test if the dynamic linker supports AVX-512F
> before using it?
Test case reduced from vector math functions test where runtime check passed.
Here is difference only in AS used for dynamic linker build, so its behavior
should be the same in both cases I think, isn't it?
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