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Re: [PATCH] x86-64: Use direct TLS initial-exec access to update errno
On 05/12/17 00:21, H.J. Lu wrote:
> On Mon, Dec 4, 2017 at 3:33 PM, Carlos O'Donell <email@example.com> wrote:
>> Why make these changes?
> It is motivated by
the failure paths of math functions are not
performance critical, ideally there should
be no errno access at all just a tail call
to something like __math_invalidf (see
flt-32/math_errf.c): reduces code size and
does all error handling at a single place
without tls abi dependent code in asm.