On Sat, Nov 12, 2011 at 9:32 AM, Uros Bizjak <ubiz...@gmail.com> wrote:
> On Sat, Nov 12, 2011 at 3:19 AM, H.J. Lu <hongjiu...@intel.com> wrote:
>> The current x32 implementation uses LEAs to convert 32bit address to
>> 64bit. However, we can use addr32 prefix to use 32bit address directly.
>> It improves performance by 5% in SPEC CPU 2K/2006. All changes are done
>> in x86 backend, except for a smaill unwind library assert change:
>> due to return column size difference.
>> For x86-64, Pmode can be 32bit or 64bit, but word_mode is always 64bit.
>> push/pop only work on word_mode. Also string instructions take Pmode
>> I will submit a set of patches to use 32bit Pmode for x32. This is
>> the first patch to properly use Pmode and word_mode. It also adds
>> addr32 prefix to string instructions if needed. OK for trunk?
> Not for stage3.
Now trunk in stage1. The patch is at
OK for trunk?