PATCH: Convert mov to lea for loading local function address

H.J. Lu hjl.tools@gmail.com
Fri Aug 31 14:12:00 GMT 2012


On Thu, Aug 30, 2012 at 9:22 PM, H.J. Lu <hongjiu.lu@intel.com> wrote:
> Hi,
>
> I am checking in this patch to convert move mov to lea for loading local
> function address.
>
> bfd/
>
> 2012-08-30  H.J. Lu  <hongjiu.lu@intel.com>
>
>         * elf32-i386.c (elf_i386_relocate_section): Convert
>         "mov foo@GOT(%reg), %reg" to "lea foo@GOTOFF(%reg), %reg"
>         for local symbols.
>
>         * elf64-x86-64.c (elf_x86_64_relocate_section): Convert
>         "mov foo@GOTPCREL(%rip), %reg" to "lea foo@GOTOFF(%reg), %reg"
>         for local symbols.
>

I used the new binutils on glibc for both i386 and x86-64.  It
converted more than a dozen mov to lea in libc.so and one
in ld.so.

-- 
H.J.



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