On 06/02/14 09:56, Vivek Sundararajan wrote:
> Thanks for the reply Tom!
>
> To clarify: Valgrind has to be built in 64 bit mode before running
> against my app to profile it?

Well you will need a 64 bit valgrid to work with 64 bit programs yes bit 
valgrind normally builds both 32 and 64 bit support unless you tell it 
not to.

The first thing though is to build the program you are trying to run 
valgrind on as a 64 bit program.

Tom

>
>
> On 4 February 2014 17:05, Tom Hughes <t...@compton.nu
> <mailto:t...@compton.nu>> wrote:
>
>     On 04/02/14 11:03, Vivek Sundararajan wrote:
>
>         Below is the output I get stating "unhandled instruction".
>         Is this because of depending on libraries that are not build
>         with the
>         above flags?
>
>
>     It's the AESKEYGENASSIST instruction which, like most of the more
>     recent instructions, is only supported in 64 bit mode at the moment
>     and you are trying to use it in 32 bit code.
>
>     In https://bugs.kde.org/show_bug.__cgi?id=296577
>     <https://bugs.kde.org/show_bug.cgi?id=296577> Julian commented:
>
>      > This is AESKEYGENASSIST, which is supported in 64 bit mode but not 32
>      > bit. Realistically I don't think it will get supported in 32 bit mode
>      > -- that doesn't support anything after SSSE3. Can you develop in 64
>      > bit mode instead? The main support emphasis now is x86_64 (64 bit)
>      > and ARM; x86 (32 bit) is more-or-less "legacy".
>
>     Note that the bug I reference above is a bit confused because
>     somebody raised it about one instruction and then somebody else
>     added a comment about a different instruction.
>
>     Tom
>
>     --
>     Tom Hughes (t...@compton.nu <mailto:t...@compton.nu>)
>     http://compton.nu/
>
>
>
>
> --
> Regards,
> Vivek.S


-- 
Tom Hughes (t...@compton.nu)
http://compton.nu/

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