On 10/11/13 08:40, Joern Rennecke wrote:
On 11 October 2013 04:53, Jeff Law <l...@redhat.com> wrote:
> With your change it seems to me that we do a single round of spilling &
caller-save setup, then align the stack, then restart. The net result being
we align the stack a lot more often.
Yes, but AFAICT, that should not result in more space being used,
because assign_stack_local uses ASLK_RECORD_PAD, so
assign_stack_local_1 will record any space
added for alignment purposes with add_frame_space, so it can be used
for a subsequent spill of suitable size.
You're right -- I wasn't aware of Bernd's work to reuse alignment
paddings for real objects. It was added a few months after I'd been
poking at problems in that loop of reload. Let me look at this stuff again.
jeff
