On Thu, Jul 30, 2015 at 8:41 PM, H.J. Lu wrote:
> On Tue, Jul 21, 2015 at 02:45:39PM -0700, H.J. Lu wrote:
>> When __builtin_frame_address is used to retrieve the address of the
>> function stack frame, the frame pointer is always kept, which wastes one
>> register and 2 instructions. For x86-32,
On Tue, Jul 21, 2015 at 02:45:39PM -0700, H.J. Lu wrote:
> When __builtin_frame_address is used to retrieve the address of the
> function stack frame, the frame pointer is always kept, which wastes one
> register and 2 instructions. For x86-32, one less register means
> significant negative impact
