[flang-dev] Flang Biweekly Sync - Notes from the February 3, 2021 call

[Perry-Holby, Alexis via flang-dev]

Flang team,

Here are the notes from the February 3, 2021 Flang Community biweekly call.

We will be switching over to using a Google Doc for keeping record of the notes for future meetings, available here<https://docs.google.com/document/d/10T-S2J3GrahpG4Ooif93NSTz2zBW0MQc_RlwHi0-afY/edit?usp=sharing>.  If you have trouble accessing the document, please email me (aperry at lanl.gov<mailto:aperry at lanl.gov>) and I will add your email to the access list.

Also, let me know if you have any topics you would like to see covered in the next call.

Upcoming calls (all times Pacific time):
Call

When

LLVM Flang Technical Community call

Monday, February 8, at 8:30 AM

LLVM Alias Analysis call

Tuesday, February 23, at 10:00 AM

Classic Flang biweekly call

Wednesday, February 10, at 8:00 AM

OpenMP developer call

Thursday, February 4, at 8:00 AM

Flang biweekly call (this call)

Wednesday, February 17, at 8:30 AM

New Driver Technical biweekly call

Monday, February 15, at 8:30 AM




Information for joining these calls and the Flang Slack workspace can be found at http://flang.llvm.org/docs/GettingInvolved.html.

Thank you,
-- Alexis

 Agenda:

  *   LLVM Flang Technical Call agenda
  *   LLVM Flang development updates
     *   Fir-dev merge status
        *   Eric’s patch series - feedback
        *   Do one pass at a time, Eric is starting with codegen
        *   Initial pass broken into 4 patches (later 5), received negative feedback
        *   Next attempt should have each patch able to be built and tested on its own
        *   Currently pushing through small, possibly non-functional changes to prep for next substantive patch series (attempt at noise reduction in review process)
     *   Adding Fortran tests to LLVM suite status
        *   More progress on SPEC CPU 2017, got reviewed yesterday and Nick will update soon  https://reviews.llvm.org/D95633
        *   Started `test-suite` slack channel on Flang-compiler workspace
        *   Reminder that LLVM build-bot zorg supports Fortran tests (Thanks to Diana Picus patch)
        *   Would love more Fortran tests from others ;)

           *   Good place to contribute
     *   New Driver work
        *   New biweekly call has started
        *   -J module work in review
        *   fixed/free form file format work
        *   Working on -fopenmp and -fopenacc
     *   OpenMP/OpenACC work
        *   New semantic check added
        *   Refactoring work ongoing
        *   OpenMPIRBuilder - canonical loop handling improvements
  *   Classic Flang development update
     *   Better Windows support for Flang is in review
        *   Lots of outside contributors

Details:

  *   Flang on GitHub
     *    LLVM Flang is in https://github.com/llvm/llvm-project/tree/master/flang.
     *   There have been 2,943 commits for LLVM Flang encompassing over 178,000 lines of code, documentation, CMakefiles and tests.
     *   There have been 1,735 total commits to Classic Flang in https://github.com/flang-compiler/flang.
  *   LLVM Flang recent development
     *   Driver - report diagnostics from the prescanner, fixed/free form detection improvements, updated preprocessor tests to use new driver, disallow non-existent input files
     *   Better C_LOC and C_ASSOCIATED in flang/module
     *   Error message bug fixes and improvements
     *   Correct shape analysis for transformational intrinsic functions
     *   Fix errors in ISO_FORTRAN_ENV module for REAL128
     *   OpenACC - Fix clause restriction for host_data directive and exit data directive, allow multiple wait clauses
     *   Fix problems with constant arrays with lower bounds that are not 1
     *   Implement IEEE_SUPPORT_xxx inquiry functions
     *   Improve shape & length characterization
  *   Classic Flang recent development
     *   Update apt data before installing sphinx
     *   Fix for len intrinsic returning int*8 in some cases
     *   Minor FileCheck pattern fixes
     *   Fix the readme to point to the correct flang-dev list
     *   Rename direct header to avoid windows conflict
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