GSoC topic: Implement hot cold splitting at GIMPLE IR level

Hi Everyone, I was one of the original authors of hot cold splitting optimization in LLVM. I was wondering if implementing a region based hot cold splitting optimization would be useful in GCC? We already have optimal implementation of SESE region detection in GCC (https://github.com/gcc-mirror/

RE: [EXTERNAL] Re: GCC selftest improvements

> From: David Malcolm > > Thanks Modi. > > Before looking at the updated patch in detail, we ought to also address the > legal prerequisites for contributing. > > Does your employer have legal paperwork in place with the FSF for such > contributions? See: > > https://gcc.gnu.org/contribute.ht

Re: Second GCC 8.4 Release Candidate available from gcc.gnu.org

I bootstrapped and tested on power 7 and 8 BE and power 8 and 9 LE and saw nothing untoward. On 3/2/20 4:45 AM, Jakub Jelinek wrote: The second release candidate for GCC 8.4 is available from https://gcc.gnu.org/pub/gcc/snapshots/8.4.0-RC-20200302/ ftp://gcc.gnu.org/pub/gcc/snapshots

Re: [PATCH, v3] wwwdocs: e-mail subject lines for contributions

On 02/03/2020 14:41, Jonathan Wakely wrote: On Mon, 2 Mar 2020 at 14:31, Nathan Sidwell wrote: On 3/2/20 8:01 AM, Richard Earnshaw (lists) wrote: On 27/02/2020 13:37, Nathan Sidwell wrote: On 2/3/20 6:41 AM, Richard Earnshaw (lists) wrote: On 22/01/2020 17:45, Richard Earnshaw (lists) wrote

Re: GSoC 2020

Hi Yusuke, hi all, On 3/2/20 12:16 PM, Thomas Koenig wrote: Would you tell me more information about the project? Before the introduction of modules and "contained" procedures (both: Fortran 90), there was no way to declare/define a function at one place and when using the procedure to know (a

Re: [PATCH, v3] wwwdocs: e-mail subject lines for contributions

On Mon, 2 Mar 2020 at 14:31, Nathan Sidwell wrote: > > On 3/2/20 8:01 AM, Richard Earnshaw (lists) wrote: > > On 27/02/2020 13:37, Nathan Sidwell wrote: > >> On 2/3/20 6:41 AM, Richard Earnshaw (lists) wrote: > >>> On 22/01/2020 17:45, Richard Earnshaw (lists) wrote: > > [updated based o

Re: [PATCH, v3] wwwdocs: e-mail subject lines for contributions

On 3/2/20 8:01 AM, Richard Earnshaw (lists) wrote: On 27/02/2020 13:37, Nathan Sidwell wrote: On 2/3/20 6:41 AM, Richard Earnshaw (lists) wrote: On 22/01/2020 17:45, Richard Earnshaw (lists) wrote: [updated based on v2 discussions] This patch proposes some new (additional) rules for email su

Re: GSoC topic: precise lifetimes in GIMPLE

On Mon, 2 Mar 2020, Alexander Monakov wrote: > On Mon, 2 Mar 2020, Richard Biener wrote: > > > PR90348 is certainly entertaining. But I guess for a GSoC project > > we need a more elaborate implementation plan. The above suggesting > > of a "lifetime start" is IMHO a no-go btw. Instead I think

Re: GSoC topic: precise lifetimes in GIMPLE

On Mon, 2 Mar 2020, Richard Biener wrote: > PR90348 is certainly entertaining. But I guess for a GSoC project > we need a more elaborate implementation plan. The above suggesting > of a "lifetime start" is IMHO a no-go btw. Instead I think the > only feasible way is to make all references indir

Re: GSoC topic: precise lifetimes in GIMPLE

On Mon, 2 Mar 2020, Alexander Monakov wrote: > Hi, > > following the conversation in PR 90348, I wonder if it would make sense > to suggest the idea presented there as a potential GSoC topic? Like this: > > **Enhance GIMPLE IR to represent lifetimes explicitly** At the moment, > GCC internal re

Re: [PATCH, v3] wwwdocs: e-mail subject lines for contributions

On Mon, Mar 02, 2020 at 01:01:46PM +, Richard Earnshaw (lists) wrote: > I'd like to. But have we reached consensus? Seems that every time I > produce a revised version of the text we end up in another round of bike > shedding. (Is that a word?) It's called a "lap", but "criterium" would b

GSoC topic: precise lifetimes in GIMPLE

Hi, following the conversation in PR 90348, I wonder if it would make sense to suggest the idea presented there as a potential GSoC topic? Like this: **Enhance GIMPLE IR to represent lifetimes explicitly** At the moment, GCC internal representation GIMPLE lacks precise lifetime information for a

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HSA Hope Project Hundreds of children are going to school hungry, exhausted and poorly clothed because their parents are so strapped for cash. Starving pupils dressed in ­threadbare clothes and shabby shoes stealing food from classmates - it sounds like a scene from a horror movie, but thi

Re: [PATCH, v3] wwwdocs: e-mail subject lines for contributions

On 27/02/2020 13:37, Nathan Sidwell wrote: On 2/3/20 6:41 AM, Richard Earnshaw (lists) wrote: On 22/01/2020 17:45, Richard Earnshaw (lists) wrote: [updated based on v2 discussions] This patch proposes some new (additional) rules for email subject lines when contributing to GCC.  The goal is t

Re: Second GCC 8.4 Release Candidate available from gcc.gnu.org

gt; https://gcc.gnu.org/pub/gcc/snapshots/8.4.0-RC-20200302/ > > > ftp://gcc.gnu.org/pub/gcc/snapshots/8.4.0-RC-20200302/ > > > > > > and shortly its mirrors. It has been generated from git commit > > > r8-10102-g0afd41f8e6530b13421679801cf73cb6bef3. >

Re: Second GCC 8.4 Release Candidate available from gcc.gnu.org

On Mon, Mar 02, 2020 at 03:41:06AM -0800, H.J. Lu wrote: > On Mon, Mar 2, 2020 at 2:46 AM Jakub Jelinek wrote: > > > > The second release candidate for GCC 8.4 is available from > > > > https://gcc.gnu.org/pub/gcc/snapshots/8.4.0-RC-20200302/ > > ftp://gcc.g

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Re: Second GCC 8.4 Release Candidate available from gcc.gnu.org

On Mon, Mar 2, 2020 at 2:46 AM Jakub Jelinek wrote: > > The second release candidate for GCC 8.4 is available from > > https://gcc.gnu.org/pub/gcc/snapshots/8.4.0-RC-20200302/ > ftp://gcc.gnu.org/pub/gcc/snapshots/8.4.0-RC-20200302/ > > and shortly its mirrors. It has be

Re: GSoC 2020

Hi Yusuke, I'd like to participate in Google Summer of Code 2020 at GCC. In particular, I'm interested in the idea: "Fortran – run-time argument checking.". It seems that there are still many projects written in Fortran, thus improving Fortran itself is worthwhile for those who do high perform

Second GCC 8.4 Release Candidate available from gcc.gnu.org

The second release candidate for GCC 8.4 is available from https://gcc.gnu.org/pub/gcc/snapshots/8.4.0-RC-20200302/ ftp://gcc.gnu.org/pub/gcc/snapshots/8.4.0-RC-20200302/ and shortly its mirrors. It has been generated from git commit r8-10102-g0afd41f8e6530b13421679801cf73cb6bef3. I have

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Re: Make LTO Patch for Job Server Thread Detection Agnostic

On 2/27/20 9:44 AM, Jonathan Wakely wrote: Martin, the comment in your patch says "-std=c11" which should be c++11. Sure, thanks for pointing to it. I'm going to install the obvious patch for it. Martin >From 3c633731ade4cdad56f5729eaedb76cb2f727c39 Mon Sep 17 00:00:00 2001 From: Martin Liska

Re: Help implementing support for vec in gengtype

On Thu, Feb 27, 2020 at 6:56 PM Giuliano Belinassi wrote: > > Hi, all. > > I am tying to fix an issue with a global variable in the parallel gcc > project. For this, I am trying to move some global variables from > tree-ssa-operands to struct function. One of this variable is a > vec type, and gen

Re: Request for better syntax checking in lang.opt

On 2/23/20 10:47 AM, Thomas Koenig wrote: Hi Martin, I was able to write a sanity check for these kind of issues, but it does not resolve all similar issues for other keywords. It's not easy to do it. Having looked at the origina awk code, I agree.  Maybe, in the long term, a lex/yacc grammar