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From: David Edelsohn <dje.gcc@gmail.com>
To: Florian Weimer <fweimer@redhat.com>
Cc: Thomas Neumann via Gcc <gcc@gcc.gnu.org>,
	Thomas Neumann <tneumann@users.sourceforge.net>
Subject: Re: performance of exception handling
Date: Mon, 11 May 2020 10:36:32 -0400	[thread overview]
Message-ID: <CAGWvnynP2gji-XBVY9=LHWR_5wTp6eXGQsxCRSLU9pzCJM8LZA@mail.gmail.com> (raw)
In-Reply-To: <874ksmg3fb.fsf@oldenburg2.str.redhat.com>

On Mon, May 11, 2020 at 6:47 AM Florian Weimer via Gcc <gcc@gcc.gnu.org> wrote:

> My current preferred solution is something that moves the entire code
> that locates the relevant FDE table into glibc.  This is all the code in
> _Unwind_IteratePhdrCallback until the first read_encoded_value_with_base
> call.  And the callback mechanism would be gone, so _Unwind_Find_FDE
> would call __dl_ehframe_find (see below) and then the reamining
> processing in _Unwind_IteratePhdrCallback.

Not all GCC/G++ targets are GNU/Linux and use GLIBC.  A duplicate
implementation in GLIBC creates its own set of advantages and
disadvantages.

Thanks, David

  parent reply	other threads:[~2020-05-11 14:36 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-11  8:14 Thomas Neumann
2020-05-11 10:40 ` Florian Weimer
2020-05-11 13:59   ` Thomas Neumann
2020-05-11 14:22     ` Florian Weimer
2020-05-11 15:14     ` size of exception handling (Was: performance of exception handling) Moritz Strübe
2020-05-12  7:20       ` Freddie Chopin
2020-05-12  7:47         ` Oleg Endo
2020-05-13  9:13           ` Jonathan Wakely
2020-05-12  9:16         ` size of exception handling Florian Weimer
2020-05-12  9:44           ` Freddie Chopin
2020-05-12 11:11             ` Jonathan Wakely
2020-05-12 11:17             ` Moritz Strübe
2020-05-12 11:29               ` Florian Weimer
2020-05-12 12:01                 ` Moritz Strübe
2020-05-12 11:07         ` size of exception handling (Was: performance of exception handling) Jonathan Wakely
2020-05-12 20:56           ` Freddie Chopin
2020-05-12 22:39             ` Jonathan Wakely
2020-05-12 22:48               ` Jonathan Wakely
2020-05-13  8:04                 ` David Brown
2020-05-12  9:03       ` size of exception handling Florian Weimer
2020-05-11 14:36   ` David Edelsohn [this message]
2020-05-11 14:52     ` performance " Florian Weimer
2020-05-11 15:12       ` David Edelsohn
2020-05-11 15:24         ` Florian Weimer
2020-05-12  6:08     ` Thomas Neumann
2020-05-12  7:15       ` Richard Biener
2020-05-12  7:30         ` Thomas Neumann
2020-05-12  9:01       ` Richard Sandiford
2020-05-13  1:13         ` Thomas Neumann

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