Displaying 9 results from an estimated 9 matches for "r289813".
2016 Dec 21
0
llvm (the middle-end) is getting slower, December edition
...I'm really glad
> that we now put more and more attention at the compile time!
> >
> > Just recently I've been looking into historical compile time data as
> well, and have had similar conclusions. The regressions you've found are
> probably caused by:
> > 1) r289813 and r289855 - new matchers in InstCombine
> > 2) r286814 and r288024 - changes in Inlining cost model
> >
>
> Haven't looked at 2) yet, but I can confirm for 1). Sanjay/Ehsan, can
> you please explain what's the motivation behind the new
> transformations you introdu...
2016 Dec 21
0
llvm (the middle-end) is getting slower, December edition
FWIW, r289813 also seems to be causing/exposing a miscompile of
spec2006/perlbench on AArch64 (PR31449).
-- Matt
On Wed, Dec 21, 2016 at 11:07 AM, Davide Italiano via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> On Mon, Dec 19, 2016 at 4:24 PM, Mikhail Zolotukhin
> <mzolotukhin at apple.com&...
2016 Dec 21
5
llvm (the middle-end) is getting slower, December edition
...'s really interesting! And I'm really glad that we now put more and more attention at the compile time!
>
> Just recently I've been looking into historical compile time data as well, and have had similar conclusions. The regressions you've found are probably caused by:
> 1) r289813 and r289855 - new matchers in InstCombine
> 2) r286814 and r288024 - changes in Inlining cost model
>
Haven't looked at 2) yet, but I can confirm for 1). Sanjay/Ehsan, can
you please explain what's the motivation behind the new
transformations you introduced? I'm tempted to ask a...
2016 Dec 21
2
llvm (the middle-end) is getting slower, December edition
...we now put more and more attention at the compile time!
>
>
> >
>
>
> > Just recently I've been looking into historical compile time data as
> well, and have had similar conclusions. The regressions you've found are
> probably caused by:
>
>
> > 1) r289813 and r289855 - new matchers in InstCombine
>
>
> > 2) r286814 and r288024 - changes in Inlining cost model
>
>
> >
>
>
>
>
>
> Haven't looked at 2) yet, but I can confirm for 1). Sanjay/Ehsan, can
>
>
> you please explain what's the motivati...
2016 Dec 21
0
llvm (the middle-end) is getting slower, December edition
...compile time!
>
>
> >
>
>
> > Just recently I've been looking into historical compile time
> data as well, and have had similar conclusions. The
> regressions you've found are probably caused by:
>
>
> > 1) r289813 and r289855 - new matchers in InstCombine
>
>
> > 2) r286814 and r288024 - changes in Inlining cost model
>
>
> >
>
>
>
>
>
> Haven't looked at 2) yet, but I can confirm for 1).
> Sanjay/Ehsan, can
>
>
>...
2016 Dec 21
2
llvm (the middle-end) is getting slower, December edition
...ion at the compile time!
>>
>>
>> >
>>
>>
>> > Just recently I've been looking into historical compile time data as well, and have had similar conclusions. The regressions you've found are probably caused by:
>>
>>
>> > 1) r289813 and r289855 - new matchers in InstCombine
>>
>>
>> > 2) r286814 and r288024 - changes in Inlining cost model
>>
>>
>> >
>>
>>
>>
>>
>>
>> Haven't looked at 2) yet, but I can confirm for 1). Sanjay/Ehsan, can...
2016 Dec 21
0
llvm (the middle-end) is getting slower, December edition
...t;>
>>> > Just recently I've been looking into historical compile
>>> time data as well, and have had similar conclusions. The
>>> regressions you've found are probably caused by:
>>>
>>>
>>> > 1) r289813 and r289855 - new matchers in InstCombine
>>>
>>>
>>> > 2) r286814 and r288024 - changes in Inlining cost model
>>>
>>>
>>> >
>>>
>>>
>>>
>>>
>>>
>>> Haven't...
2016 Dec 20
0
llvm (the middle-end) is getting slower, December edition
...e analysis, it's really interesting! And I'm really glad that we now put more and more attention at the compile time!
Just recently I've been looking into historical compile time data as well, and have had similar conclusions. The regressions you've found are probably caused by:
1) r289813 and r289855 - new matchers in InstCombine
2) r286814 and r288024 - changes in Inlining cost model
You probably can try reverting them locally to check if my hypothesis is correct.
I also looked at earlier data, and on top of the before-mentioned issues I found the following causes of compile-time...
2016 Dec 17
19
llvm (the middle-end) is getting slower, December edition
First of all, sorry for the long mail.
Inspired by the excellent analysis Rui did for lld, I decided to do
the same for llvm.
I'm personally very interested in build-time for LTO configuration,
with particular attention to the time spent in the optimizer.
Rafael did something similar back in March, so this can be considered
as an update. This tries to include a more accurate high-level