commit | 700a155433d9aaae32fc91d900810a9e0ad9fac2 | [log] [tgz] |
---|---|---|
author | Tom Eccles <tom.eccles@arm.com> | Thu Apr 11 10:44:09 2024 +0100 |
committer | Copybara-Service <copybara-worker@google.com> | Thu Apr 11 02:48:05 2024 -0700 |
tree | 7e6febb827be82dff58d10a0e887be0d11018298 | |
parent | 75b05029182d7059233af44981134962314c4950 [diff] |
[flang][OpenMP] Allocate array reduction variables on the heap (#87773) Following up on a review comment: https://github.com/llvm/llvm-project/pull/84958#discussion_r1527627848 Reductions might be inlined inside of a loop so stack allocations are not safe. Normally flang allocates arrays on the stack. Allocatable arrays have a different type: fir.box<fir.heap<fir.array<...>>> instead of fir.box<fir.array<...>>. This patch will allocate all arrays on the heap. Reductions on allocatable arrays still aren't supported (but I will get to this soon). GitOrigin-RevId: 6f068b9cf1ac09945c096269f0c6c276d2ec95c4
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.
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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.
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