similar to: Open Project : Inter-procedural Register Allocation [GSoC 2016]

Hi Vivek, [+CC Matthias, Quentin] Inter-procedural register allocation can be a big win, but my estimate is that it will be challenging to complete within one summer unless you're already familiar with LLVM's register allocator. I've CC'ed some people who can give you some more detailed information. -- Sanjoy On Tue, Feb 9, 2016 at 9:17 PM, vivek pandya via llvm-dev

*Vivek Pandya* On Wed, Mar 23, 2016 at 9:43 AM, C Bergström <cbergstrom at pathscale.com> wrote: > From the research and code I've seen - Doesn't this break regalloc > down into a global and location allocation strategy? (maybe I'm > remembering incorrectly) > > Yes I think you are correct. If I recall IP Reg allocation allocates some registers to varibale that

Apologies: didn't notice how old this thread is before replying. On Tue, Mar 22, 2016 at 5:24 PM, Sanjoy Das <sanjoy at playingwithpointers.com> wrote: > Hi Vivek, > > [+CC Matthias, Quentin] > > Inter-procedural register allocation can be a big win, but my estimate > is that it will be challenging to complete within one summer unless > you're already familiar

No need to apologize this thread surely deserved some answers :) From my perspective this project sounds doable. I would expect the register allocation parts to be not too hard: I imagine this being just distilling a new clobber regmask after allocating a function. I would expect the challenging (or annoying) part to get a machine module pass (or a similar mechanism to influence the order in

>From the research and code I've seen - Doesn't this break regalloc down into a global and location allocation strategy? (maybe I'm remembering incorrectly) On Wed, Mar 23, 2016 at 12:04 PM, Mehdi Amini via llvm-dev <llvm-dev at lists.llvm.org> wrote: > >> On Mar 22, 2016, at 6:04 PM, Matthias Braun via llvm-dev <llvm-dev at lists.llvm.org> wrote: >>

*Vivek Pandya* On Wed, Mar 23, 2016 at 10:18 PM, Quentin Colombet <qcolombet at apple.com> wrote: > The pass manager already has support for calligraph connected region IIRC. > If I am not wrong Quentin and Mehdi Amini refers to CallGraphSCCPass.cpp > As for the regmask part, we probably could hack something up in a week or > so, but I believe this is not what Vivek had in

The pass manager already has support for calligraph connected region IIRC. As for the regmask part, we probably could hack something up in a week or so, but I believe this is not what Vivek had in mind. I think the main challenge of a real inter-procedural register allocator is to change all of the calling convention dynamically and more importantly convey the right information to other tools

> On Mar 22, 2016, at 6:04 PM, Matthias Braun via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > No need to apologize this thread surely deserved some answers :) > > From my perspective this project sounds doable. I would expect the register allocation parts to be not too hard: I imagine this being just distilling a new clobber regmask after allocating a function. I would

> On Mar 23, 2016, at 2:59 PM, Quentin Colombet via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > >> On Mar 23, 2016, at 2:44 PM, vivek pandya <vivekvpandya at gmail.com <mailto:vivekvpandya at gmail.com>> wrote: >> >> >> >> Vivek Pandya >> >> >> On Wed, Mar 23, 2016 at 10:18 PM, Quentin Colombet <qcolombet at

*Vivek Pandya* On Fri, Mar 25, 2016 at 1:30 AM, Pete Cooper <peter_cooper at apple.com> wrote: > > On Mar 24, 2016, at 11:09 AM, Pete Cooper <peter_cooper at apple.com> wrote: > > > On Mar 23, 2016, at 6:38 PM, Gerolf Hoflehner via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > > > On Mar 23, 2016, at 2:59 PM, Quentin Colombet via llvm-dev <

> On Mar 23, 2016, at 2:44 PM, vivek pandya <vivekvpandya at gmail.com> wrote: > > > > Vivek Pandya > > > On Wed, Mar 23, 2016 at 10:18 PM, Quentin Colombet <qcolombet at apple.com <mailto:qcolombet at apple.com>> wrote: > The pass manager already has support for calligraph connected region IIRC. > If I am not wrong Quentin and Mehdi Amini

> On Mar 24, 2016, at 11:09 AM, Pete Cooper <peter_cooper at apple.com> wrote: > >> >> On Mar 23, 2016, at 6:38 PM, Gerolf Hoflehner via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote: >> >>> >>> On Mar 23, 2016, at 2:59 PM, Quentin Colombet via llvm-dev <llvm-dev at lists.llvm.org

> On Mar 23, 2016, at 6:38 PM, Gerolf Hoflehner via llvm-dev <llvm-dev at lists.llvm.org> wrote: > >> >> On Mar 23, 2016, at 2:59 PM, Quentin Colombet via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote: >> >> >>> On Mar 23, 2016, at 2:44 PM, vivek pandya <vivekvpandya at gmail.com

> On Mar 24, 2016, at 1:00 PM, Pete Cooper via llvm-dev <llvm-dev at lists.llvm.org> wrote: > >> >> On Mar 24, 2016, at 11:09 AM, Pete Cooper <peter_cooper at apple.com <mailto:peter_cooper at apple.com>> wrote: >> >>> >>> On Mar 23, 2016, at 6:38 PM, Gerolf Hoflehner via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at

> On May 15, 2016, at 12:43 AM, vivek pandya <vivekvpandya at gmail.com> wrote: > > > > Vivek Pandya > > > On Wed, May 11, 2016 at 9:43 AM, Mehdi Amini <mehdi.amini at apple.com <mailto:mehdi.amini at apple.com>> wrote: > >> On May 10, 2016, at 6:06 PM, Hal Finkel <hfinkel at anl.gov <mailto:hfinkel at anl.gov>> wrote: >>

----- Original Message ----- > From: "vivek pandya" <vivekvpandya at gmail.com> > To: "Matthias Braun" <matze at braunis.de> > Cc: "Hal Finkel" <hfinkel at anl.gov>, "llvm-dev" > <llvm-dev at lists.llvm.org> > Sent: Wednesday, May 11, 2016 1:14:07 PM > Subject: Re: [llvm-dev] [GSoC 2016] Interprocedural Register

> On May 18, 2016, at 11:00 AM, vivek pandya <vivekvpandya at gmail.com> wrote: > > > > Vivek Pandya > > > On Wed, May 18, 2016 at 11:25 PM, Quentin Colombet <qcolombet at apple.com <mailto:qcolombet at apple.com>> wrote: > >> On May 18, 2016, at 10:46 AM, vivek pandya <vivekvpandya at gmail.com <mailto:vivekvpandya at

----- Original Message ----- > From: "vivek pandya" <vivekvpandya at gmail.com> > To: "Quentin Colombet" <qcolombet at apple.com> > Cc: "Hal Finkel" <hfinkel at anl.gov>, "llvm-dev" > <llvm-dev at lists.llvm.org>, "Matthias Braun" <matze at braunis.de>, > "Mehdi Amini" <mehdi.amini at

*Vivek Pandya* On Wed, May 18, 2016 at 11:25 PM, Quentin Colombet <qcolombet at apple.com> wrote: > > On May 18, 2016, at 10:46 AM, vivek pandya <vivekvpandya at gmail.com> wrote: > > > > *Vivek Pandya* > > > On Wed, May 11, 2016 at 4:01 PM, Hal Finkel <hfinkel at anl.gov> wrote: > >> >> ------------------------------ >> >>

----- Original Message ----- > From: "vivek pandya" <vivekvpandya at gmail.com> > To: "Hal Finkel" <hfinkel at anl.gov> > Cc: "llvm-dev" <llvm-dev at lists.llvm.org>, "Matthias Braun" > <matze at braunis.de>, "Mehdi Amini" <mehdi.amini at apple.com>, "Quentin > Colombet" <qcolombet at