Hi all, At the EuroLLVM BoF people asked where the design discussions around GlobalISel take place. Naturally, a lot of them take place at Apple, since they have the highest density of co-located GlobalISel devs, but we also have some in Phab. For those of you that are interested, please have a look at the following topics - discussions are progressing rather slowly and we definitely wouldn't mind some more involvement from the community: Legalization of non-power-of-2 types: https://reviews.llvm.org/D30529 TableGen for the instruction selector (last pass in the GlobalISel pipeline): https://reviews.llvm.org/D31418 and the rest of its stack We have also set up a sort of scratchpad document here: https://goo.gl/IS2Bdw At the moment it contains mostly notes from the BoF and a few other emails. The intention is to centralize any hot topics related to GlobalISel there, so people can keep track of what the current status is and what problems are being tackled at the moment in the community. If people feel it would be useful, we could also try to send a weekly-ish email listing the pending reviews and any points that need coordination. We're open to any suggestions on how we can communicate better. Thanks, Diana (with inputs from Kristof and Quentin)
Hi again, On 1 April 2017 at 15:09, Diana Picus <diana.picus at linaro.org> wrote:> If people feel it would be useful, we could also try to send a > weekly-ish email listing the pending reviews and any points that need > coordination. We're open to any suggestions on how we can communicate > better.Nobody said anything about this, but with people coming back from spring break these days it's probably a good time to sync again. Kristof and I have been trying to keep the scratchpad document here [1] up to date, but I'll try to summarize things on the mailing list as well: We still have a few bugs open that we should fix or at least discuss before turning GlobalISel on by default at O0 for AArch64: * PR32560 - A crash in regbank select [2] * PR32550 - Floating point values moving a lot through GPRs [3] * PR32561 - Improve placement of constants [4] * Optional - improve handling of switch statements (I think we don't even have a bug open for this, but it has been brought up) Unrelated to O0, here are some pending patches (at least that I'm aware of): * Legalization of non-power-of-2 types [5] - this hasn't seen any activity in a while, but it would be nice to move forward with it * TableGen for the instruction selector: support for predicates [6] - needs a rebase, would be very useful for ARM * Formatting TableGen'erated files [7] - this is an older patch and it doesn't really need to be limited only to GlobalISel, it looks like it might be a good idea for TableGen in general Also, Eric Cristopher has started a discussion on the GlobalISel accessors [8]. If I missed anything, please feel free to bring it up! Cheers, Diana [1] https://goo.gl/IS2Bdw [2] http://bugs.llvm.org/show_bug.cgi?id=32560 [3] http://bugs.llvm.org/show_bug.cgi?id=32550 [4] http://bugs.llvm.org/show_bug.cgi?id=32561 [5] https://reviews.llvm.org/D30529 [6] https://reviews.llvm.org/D31418 [7] https://reviews.llvm.org/D30299 [8] http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20170410/445369.html
> On 19 Apr 2017, at 15:24, Diana Picus via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > Hi again, > > On 1 April 2017 at 15:09, Diana Picus <diana.picus at linaro.org> wrote: >> If people feel it would be useful, we could also try to send a >> weekly-ish email listing the pending reviews and any points that need >> coordination. We're open to any suggestions on how we can communicate >> better. > > Nobody said anything about this, but with people coming back from > spring break these days it's probably a good time to sync again. > Kristof and I have been trying to keep the scratchpad document here > [1] up to date, but I'll try to summarize things on the mailing list > as well: > > We still have a few bugs open that we should fix or at least discuss > before turning GlobalISel on by default at O0 for AArch64: > * PR32560 - A crash in regbank select [2] > * PR32550 - Floating point values moving a lot through GPRs [3] > * PR32561 - Improve placement of constants [4] > * Optional - improve handling of switch statements (I think we don't > even have a bug open for this, but it has been brought up) > > Unrelated to O0, here are some pending patches (at least that I'm aware of): > * Legalization of non-power-of-2 types [5] - this hasn't seen any > activity in a while, but it would be nice to move forward with it > * TableGen for the instruction selector: support for predicates [6] - > needs a rebase, would be very useful for ARMI committed this one over the weekend.> * Formatting TableGen'erated files [7] - this is an older patch and it > doesn't really need to be limited only to GlobalISel, it looks like it > might be a good idea for TableGen in general > > Also, Eric Cristopher has started a discussion on the GlobalISel accessors [8]. > If I missed anything, please feel free to bring it up! > > Cheers, > Diana > > [1] https://goo.gl/IS2Bdw > [2] http://bugs.llvm.org/show_bug.cgi?id=32560 > [3] http://bugs.llvm.org/show_bug.cgi?id=32550 > [4] http://bugs.llvm.org/show_bug.cgi?id=32561 > [5] https://reviews.llvm.org/D30529 > [6] https://reviews.llvm.org/D31418 > [7] https://reviews.llvm.org/D30299 > [8] http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20170410/445369.html > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
Hi Diana, Thanks for putting that together. It is much easier to follow what is going on.> On Apr 19, 2017, at 7:24 AM, Diana Picus via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > Hi again, > > On 1 April 2017 at 15:09, Diana Picus <diana.picus at linaro.org> wrote: >> If people feel it would be useful, we could also try to send a >> weekly-ish email listing the pending reviews and any points that need >> coordination. We're open to any suggestions on how we can communicate >> better. > > Nobody said anything about this, but with people coming back from > spring break these days it's probably a good time to sync again. > Kristof and I have been trying to keep the scratchpad document here > [1] up to date, but I'll try to summarize things on the mailing list > as well: > > We still have a few bugs open that we should fix or at least discuss > before turning GlobalISel on by default at O0 for AArch64: > * PR32560 - A crash in regbank select [2] > * PR32550 - Floating point values moving a lot through GPRs [3] > * PR32561 - Improve placement of constants [4] > * Optional - improve handling of switch statements (I think we don't > even have a bug open for this, but it has been brought up) > > Unrelated to O0, here are some pending patches (at least that I'm aware of): > * Legalization of non-power-of-2 types [5] - this hasn't seen any > activity in a while, but it would be nice to move forward with it > * TableGen for the instruction selector: support for predicates [6] - > needs a rebase, would be very useful for ARM > * Formatting TableGen'erated files [7] - this is an older patch and it > doesn't really need to be limited only to GlobalISel, it looks like it > might be a good idea for TableGen in general > > Also, Eric Cristopher has started a discussion on the GlobalISel accessors [8]. > If I missed anything, please feel free to bring it up! > > Cheers, > Diana > > [1] https://goo.gl/IS2Bdw > [2] http://bugs.llvm.org/show_bug.cgi?id=32560 > [3] http://bugs.llvm.org/show_bug.cgi?id=32550 > [4] http://bugs.llvm.org/show_bug.cgi?id=32561 > [5] https://reviews.llvm.org/D30529 > [6] https://reviews.llvm.org/D31418 > [7] https://reviews.llvm.org/D30299 > [8] http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20170410/445369.html <http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20170410/445369.html>Just done that in r301841. Cheers, -Quentin> _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20170501/7764e428/attachment.html>
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