| commit | b60c5f3c2e81cdf776a1612ad6531d1f6c86c186 | [log] [tgz] |
|---|---|---|
| author | Peter Klausler <pklausler@nvidia.com> | Fri Jun 02 16:30:43 2023 -0700 |
| committer | Copybara-Service <copybara-worker@google.com> | Mon Jun 05 19:35:41 2023 -0700 |
| tree | 3fc70f155d2583527afbe5a31905451d2a917b5d | |
| parent | a717b3dd5876c3ef3e7f66868257087b7b4444d7 [diff] |
[flang] Fix crash in shape analysis of PACK() A CHECK() was firing when a call to the PACK intrinsic does not have a VECTOR= argument and at least one dimension of the shape of the ARRAY= argument could not be determined. The CHECK was inappropriate, since this can of course happen, such as when that argument is the result of the SPREAD() intrinsic with non-constant DIM= or NCOPIES= arguments. Replace with an if() statement. Differential Revision: https://reviews.llvm.org/D152212 GitOrigin-RevId: 7db4c583db634ca4f16cd7aadb967dcb209bad5d
Flang is a ground-up implementation of a Fortran front end written in modern C++. It started off as the f18 project (https://github.com/flang-compiler/f18) with an aim to replace the previous flang project (https://github.com/flang-compiler/flang) and address its various deficiencies. F18 was subsequently accepted into the LLVM project and rechristened as Flang.
Please note that flang is not ready yet for production usage.
Read more about flang in the docs directory. Start with the compiler overview.
To better understand Fortran as a language and the specific grammar accepted by flang, read Fortran For C Programmers and flang's specifications of the Fortran grammar and the OpenMP grammar.
Treatment of language extensions is covered in this document.
To understand the compilers handling of intrinsics, see the discussion of intrinsics.
To understand how a flang program communicates with libraries at runtime, see the discussion of runtime descriptors.
If you're interested in contributing to the compiler, read the style guide and also review how flang uses modern C++ features.
If you are interested in writing new documentation, follow LLVM's Markdown style guide.
Consult the Getting Started with Flang for information on building and running flang.