On Tue, Aug 7, 2012 at 11:58 AM, Steven Bosscher wrote:
> On Tue, Aug 7, 2012 at 11:52 AM, Richard Guenther
> wrote:
>> So I wonder why simply looping over all SSA defs in a loop body and checking
>> whether a use is outside of it is not enough to compute this information ...
>> (yes, we might en
On Tue, Aug 7, 2012 at 11:52 AM, Richard Guenther
wrote:
> So I wonder why simply looping over all SSA defs in a loop body and checking
> whether a use is outside of it is not enough to compute this information ...
> (yes, we might end up creating too many loop closed PHIs, namely on all
> exits r
On Tue, Aug 7, 2012 at 11:45 AM, Steven Bosscher wrote:
> On Tue, Aug 7, 2012 at 11:22 AM, Richard Guenther
> wrote:
>> Another optimization would be to do
>>
>> @@ -440,13 +442,13 @@ compute_global_livein (bitmap livein ATT
>> && ! bitmap_bit_p (def_blocks, pred_index)
>>
On Tue, Aug 7, 2012 at 11:22 AM, Richard Guenther
wrote:
> Another optimization would be to do
>
> @@ -440,13 +442,13 @@ compute_global_livein (bitmap livein ATT
> && ! bitmap_bit_p (def_blocks, pred_index)
> && bitmap_set_bit (livein, pred_index))
> {
> -
On Tue, Aug 7, 2012 at 11:03 AM, Steven Bosscher wrote:
> On Tue, Aug 7, 2012 at 10:31 AM, Richard Guenther
> wrote:
>> On Tue, Aug 7, 2012 at 8:24 AM, Steven Bosscher
>> wrote:
>>> Hello,
>>>
>>> In the test case for PR54146, compute_global_livein allocates/frees a
>>> worklist for >400,000 ba
On Tue, Aug 7, 2012 at 10:31 AM, Richard Guenther
wrote:
> On Tue, Aug 7, 2012 at 8:24 AM, Steven Bosscher wrote:
>> Hello,
>>
>> In the test case for PR54146, compute_global_livein allocates/frees a
>> worklist for >400,000 basic blocks on each invocation. And it's called
>> a lot, for rewrite_i
On Tue, Aug 7, 2012 at 8:24 AM, Steven Bosscher wrote:
> Hello,
>
> In the test case for PR54146, compute_global_livein allocates/frees a
> worklist for >400,000 basic blocks on each invocation. And it's called
> a lot, for rewrite_into_loop_closed_ssa. But the maximum number of
> basic blocks eve
Hello,
In the test case for PR54146, compute_global_livein allocates/frees a
worklist for >400,000 basic blocks on each invocation. And it's called
a lot, for rewrite_into_loop_closed_ssa. But the maximum number of
basic blocks ever on the work list was only ~6500. So the work list
can be much sma
