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Re: Performance of unaligned memory-accesses

From David Brown <david.brown@hesbynett.no>
Newsgroups comp.lang.c++
Subject Re: Performance of unaligned memory-accesses
Date 2019-08-10 17:21 +0200
Organization A noiseless patient Spider
Message-ID <qimnde$ki1$1@dont-email.me> (permalink)
References (16 earlier) <qik1o7$2iq$1@news.albasani.net> <qik213$m7$1@news.albasani.net> <iwg3F.642677$Ho1.369267@fx40.am4> <qik9tj$cps$1@news.albasani.net> <2tm3F.2462684$ng1.1031546@fx36.am4>

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On 10/08/2019 00:28, Bart wrote:
> On 09/08/2019 18:18, Bonita Montero wrote:
>>>> MSVC-documentation:
>>>> "To pack a class is to place its members directly after each
>>>> other in memory, which can mean that some or all members can
>>>> be  ligned on a boundary smaller than the default alignment
>>>> the target architecture"
>>>> gcc supports the same kind of #pragma pack, even with the
>>>> same push- / pop-syntax. According to the documentation this
>>>> is to be MSVC-compatible here.
>>
>>> Being able to define such a layout doesn't necessarily mean that 
>>> unaligned accesses are supported by hardware.
>>
>> Ok, you're soooo right.
>> #pragma pack is supported without making sense.

Bart /is/ right.  Lots of processors don't support unaligned access, and 
compilers for them will usually still have some type of "packed" struct 
solution.

>>
> 
> I'm saying one needn't have anything to do with the other.
> 
> For example, take this struct:
> 
>     struct {char a,b,c,d;}
> 
> where char is 8 bits. What happens when you run this on a machine which 
> only has 32-bit word-addressable memory?

If the system only has 32-bit word addressable memory, then usually char 
will be 32-bit (you get this in some DSP's).  Alternatively, it can 
emulate access to smaller objects - this may even mean that char* 
pointers are bigger than int* pointers.  Either way, "pack" will not 
affect the layout of a struct containing only char members.

> 
> Structs may need to have layouts matching external files or streams or 
> hardware or languages. That could include:
> 
>    #pragma pack(1)
>    struct {char a; int b;}
> 
> on a machine that doesn't support unaligned accesses in hardware.
> 
> And after all, C also allows this:
> 
>      int *p = f();
> 
> f (in code not visible from the call-site) returns this:
> 
>     (void*)0x12345;      // ie. non-aligned pointer

No, C does not allow that - converting a value into a pointer type that 
is not properly aligned is undefined behaviour.  You can use other lower 
level methods, such as memcpy, to end up with an unaligned int* pointer 
- but dereferencing it will be undefined behaviour.

That is true regardless of whether or not the hardware supports 
unaligned pointers.

(Of course any C implementation could choose to define such behaviour in 
the obvious way - but I have not seen any compiler document such behaviour.)

Note that it is very dangerous to talk about "code not visible from the 
call site".  The trend in compilation is that more and more is visible, 
with cross-unit compilation and optimisation.  Techniques that used to 
"work" by hiding information from the compiler no longer work when you 
have link-time optimisation and similar systems.


> 
> The compiler might assume that p points to an aligned address. If the 
> hardware doesn't support unaligned, what would happen when *p is evaluated?

The compiler can always assume "p" is aligned properly, and use that 
fact for optimisation or code re-arrangement, regardless of unaligned 
access support in the hardware.

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Thread

Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 07:13 +0200
  Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-06 23:20 -0700
    Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 08:57 +0200
      Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 00:22 -0700
        Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 09:26 +0200
          Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 00:33 -0700
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 09:52 +0200
              Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 13:37 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 08:06 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 08:14 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson " <ahh_f_it@crap.nothing> - 2019-08-08 00:00 -0700
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson " <ahh_f_it@crap.nothing> - 2019-08-07 23:59 -0700
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2019-08-17 22:13 -0700
          Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 00:35 -0700
          Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 14:47 +0000
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 16:55 +0200
              Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 15:11 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 17:41 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 15:58 +0000
      Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 00:24 -0700
        Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 10:07 +0200
          Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 20:55 -0700
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 08:03 +0200
              Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 23:54 -0700
    Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 08:57 +0200
      Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 22:42 -0700
    Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 14:46 +0000
      Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 14:09 -0700
  Re: Performance of unaligned memory-accesses Paavo Helde <myfirstname@osa.pri.ee> - 2019-08-07 11:00 +0300
    Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 10:03 +0200
      Re: Performance of unaligned memory-accesses Paavo Helde <myfirstname@osa.pri.ee> - 2019-08-07 11:46 +0300
    Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 11:19 +0200
      Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 13:13 +0200
        Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 13:29 +0200
          Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 14:02 +0200
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 14:08 +0200
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 15:57 +0200
  Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-07 12:37 +0000
    Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 14:47 +0200
      Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 16:18 +0200
        Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 16:53 +0200
          Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 17:30 +0200
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 17:39 +0200
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 18:12 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 18:33 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 21:32 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 22:01 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 22:48 +0200
                Re: Performance of unaligned memory-accesses Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-08-07 23:02 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 07:43 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 22:54 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 08:04 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-08 00:16 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 09:58 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-08 01:20 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:47 +0200
                Re: Performance of unaligned memory-accesses Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-08-08 10:29 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:50 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 17:05 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 17:33 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 09:56 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:51 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 17:10 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 17:35 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 17:38 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 21:45 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-08 20:00 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 06:52 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 07:59 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-09 09:19 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 09:32 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-09 10:14 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 10:21 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-09 13:01 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 13:09 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-09 15:38 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 15:45 +0200
                Re: Performance of unaligned memory-accesses Robert Wessel <robertwessel2@yahoo.com> - 2019-08-09 09:37 -0500
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 16:59 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 17:04 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-09 16:43 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 19:18 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-09 23:28 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-10 08:55 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 17:21 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-10 17:25 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 23:32 +0200
                Re: Performance of unaligned memory-accesses Ian Collins <ian-news@hotmail.com> - 2019-08-11 10:59 +1200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 02:24 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-10 17:53 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 17:26 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 19:18 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 23:00 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 23:44 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 23:46 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-12 01:02 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 09:15 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@example.com> - 2019-08-11 16:37 -0700
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@example.com> - 2019-08-11 16:42 -0700
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@example.com> - 2019-08-11 22:05 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:25 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:24 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-10 17:22 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:23 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 17:10 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-10 17:21 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-10 17:31 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 23:47 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-10 17:40 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:27 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 23:46 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-10 23:22 +0100
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-10 16:11 -0700
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-10 17:32 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 15:41 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 15:55 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 18:06 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 18:15 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 18:59 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 19:03 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 23:48 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 00:15 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-12 01:06 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 09:13 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-12 13:32 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 13:40 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-12 11:44 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 14:30 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-12 13:09 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 15:14 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-12 19:13 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 21:15 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-12 19:25 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-13 02:28 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-13 01:08 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-13 16:03 +0200
                Re: Performance of unaligned memory-accesses Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-08-14 09:27 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-14 20:51 +0200
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-14 13:14 -0700
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-14 15:04 -0700
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-14 15:47 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-15 10:15 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-15 07:11 +0200
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-14 23:37 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-15 09:25 +0200
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-15 03:41 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-15 14:25 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-15 16:06 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-15 16:21 +0200
                Re: Performance of unaligned memory-accesses Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-08-15 16:56 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-16 06:44 +0200
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-14 16:53 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 18:40 +0200
                Re: Performance of unaligned memory-accesses Ralf Goertz <me@myprovider.invalid> - 2019-08-13 08:53 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-13 09:18 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-11 19:00 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 21:06 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-11 13:07 -0700
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-11 23:58 +0100
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-11 17:07 -0700
                Re: Performance of unaligned memory-accesses Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-08-12 10:14 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 11:30 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 13:03 +0200
                Re: Performance of unaligned memory-accesses Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-08-12 13:06 +0100
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-12 10:34 +0100
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-12 08:49 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 18:10 +0200
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-12 09:22 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 18:24 +0200
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-12 16:38 -0700
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-12 09:33 -0700
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-11 13:11 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 23:59 +0200
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-10 19:31 -0400
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 15:52 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:28 +0200
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-10 16:37 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 21:35 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 21:43 +0200
                Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-08 12:51 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:55 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:57 +0200
            Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 16:07 +0000
              Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 18:38 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 17:34 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 20:07 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 20:16 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 22:42 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 21:19 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 23:40 +0200
              Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-07 19:58 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 22:08 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 22:13 +0200
                Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-21 20:26 +0000
            Re: Performance of unaligned memory-accesses Christopher Collins <ccollins476ad@gmail.com> - 2019-08-07 12:50 -0700
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 22:18 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-07 22:52 +0100
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-07 17:52 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 10:39 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-08 13:48 +0100
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 15:53 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-07 17:27 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 10:43 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-08 13:33 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 23:34 +0200
                Re: Performance of unaligned memory-accesses Christopher Collins <ccollins476ad@gmail.com> - 2019-08-07 17:28 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 09:30 +0200
            Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 14:20 -0700
            Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-07 17:27 -0700
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 11:39 +0200
        Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-07 19:48 +0000
        Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-07 15:51 -0700
          Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 12:51 +0200
            Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-08 14:46 +0000
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 17:14 +0200

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