PATCH: Load futex pointer into RDI_LP and use RSP_LP to operate on stack

[H.J. Lu]

On Tue, May 15, 2012 at 10:21 AM, Roland McGrath <roland@hack.frob.com> wrote:
>> FWIW,  sysdeps/unix/sysv/linux/x86_64/lowlevellock.h has some
>> explicit register usages for stack and pointers.  They can use
>> R*_LP instead to save a few bytes for x32.
>
> I think it's a good thing to do.  Not just for the few bytes,
> but for consistency in what we do or don't truncate to 32 bits.
>
>

Here is a patch to load futex pointer into RDI_LP and use RSP_LP
to operate on stack.  Tested on Linux/x86-64.  OK to install.

Thanks.


-- 
H.J.
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