Displaying 4 results from an estimated 4 matches for "nlopes".
Did you mean:
lopes
2017 Jul 17
2
A bug related with undef value when bootstrap MemorySSA.cpp
...ohn Regehr; Juneyoung Lee
Subject: Re: [llvm-dev] A bug related with undef value when bootstrap MemorySSA.cpp
Hi Wei,
[+CC the other undef folks]
This is the same bug as https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugs.llvm.org%2Fshow_bug.cgi%3Fid%3D31652&data=02%7C01%7Cnlopes%40microsoft.com%7C971ae2063c8b420d2f1008d4cbec8f22%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636357664258073352&sdata=iCy8kUlWwJzQpXbXvOuhHpKyXBnntZPGvn%2FtxWsqun8%3D&reserved=0.
The short answer here is that the loop unswitch transform and the GVN transform are justified via conflicting...
2017 Jul 17
2
A bug related with undef value when bootstrap MemorySSA.cpp
...like to make loop unswitching more
> conservative. If it sounds ok, I can work on it. My plan is to enhance
> isGuaranteedNotToBeUndefOrPoison and use it as a precondition in loop
> unswitching.
>
> Thanks,
> Wei.
>
>
>
> On Mon, Jul 17, 2017 at 1:24 AM, Nuno Lopes <nlopes at microsoft.com> wrote:
> > Cool, thanks for debugging this issue and letting us know.
> >
> > We have a few patches to fix this issue:
> > - Introduce freeze in IR: https://reviews.llvm.org/D29011
> > - Lowering freeze: https://reviews.llvm.org/D29014
> >...
2019 Dec 09
2
[PATCH] D70246: [InstCombine] remove identity shuffle simplification for mask with undefs
...terpretation of the rules about shufflevector and undef and poison?
Thanks,
Jay.
On Thu, 14 Nov 2019 at 16:25, Sanjay Patel via Phabricator via
llvm-commits <llvm-commits at lists.llvm.org> wrote:
>
> spatel created this revision.
> spatel added reviewers: efriedma, regehr, aqjune, nlopes, RKSimon, lebedev.ri, liuz.
> Herald added subscribers: hiraditya, mcrosier.
> Herald added a project: LLVM.
>
> Given a shuffle that includes undef elements in an otherwise identity mask like:
>
> define <4 x float> @shuffle(<4 x float> %arg) {
> %shuf = shuf...
2019 Jan 14
7
Reducing the number of ptrtoint/inttoptrs that are generated by LLVM
Hello all,
This is a proposal for reducing # of ptrtoint/inttoptr casts which are not
written by programmers but rather generated by LLVM passes.
Currently the majority of ptrtoint/inttoptr casts are generated by LLVM;
when compiling SPEC 2017 with LLVM r348082 (Dec 2 2018) with -O3,
the output IR contains 22,771 inttoptr instructions. However, when
compiling it with -O0, there are only 1048