| commit | 63bd4735e637bbaa9181645d79fe740042936e84 | [log] [tgz] |
|---|---|---|
| author | Tom Eccles <tom.eccles@arm.com> | Wed Mar 20 09:52:04 2024 +0000 |
| committer | Copybara-Service <copybara-worker@google.com> | Wed Mar 20 02:52:48 2024 -0700 |
| tree | fdd7680cd6e340153dec751187a1999423776641 | |
| parent | 698cde2652b074badfffd85f8ccf7d86c2f6018e [diff] |
[flang][CodeGen] Run PreCGRewrite on omp reduction declare ops (#84954) OpenMP reduction declare operations can contain FIR code which needs to be lowered to LLVM. With array reductions, these regions can contain more complicated operations which need PreCGRewriting. A similar extra case was already needed for fir::GlobalOp. OpenMP array reductions 3/6 Previous PR: https://github.com/llvm/llvm-project/pull/84953 Next PR: https://github.com/llvm/llvm-project/pull/84955 GitOrigin-RevId: 1f63a56cede85bcd5f4fea3663bd3a47b801a396
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.