On Mon, 2013-08-12 at 01:11 +0200, Jan Hubicka wrote:
> Hi,
> this patch adds simple cost model into indirect call speculation.
[...]
> Index: cgraph.c
[...]
> *** cgraph_resolve_speculation (struct cgrap
> ! fprintf (dump_file, "Speculative indirect call %s/%i => %s/%i has
Xinliang David Li writes:
> I like the approach in general -- in the past, indirect call promotion
> and function inlining heuristics are disconnected -- which can lead to
> either missing promotions or useless ones. This approach solves the
> problem.
>
> On Sun, Aug 11, 2013 at 4:11 PM, Jan Hu
I like the approach in general -- in the past, indirect call promotion
and function inlining heuristics are disconnected -- which can lead to
either missing promotions or useless ones. This approach solves the
problem.
On Sun, Aug 11, 2013 at 4:11 PM, Jan Hubicka wrote:
> Hi,
> this patch adds s
Hi,
this patch adds simple cost model into indirect call speculation. First we do
not
turn calls into speculative calls when it seems bad idea (i.e. call is cold)
and during inlining we remove speculations that do not seem benefical.
On modern chip speculative call sequence without inlining is no
