commit | 0b777a4abe862bc60c38ed6702615676c8bc1144 | [log] [tgz] |
---|---|---|
author | Raghu Maddhipatla <7686592+raghavendhra@users.noreply.github.com> | Thu Apr 11 10:26:54 2024 -0500 |
committer | Copybara-Service <copybara-worker@google.com> | Thu Apr 11 08:33:10 2024 -0700 |
tree | 137a636ece30e5e52115c88fd720773ed4178859 | |
parent | 700a155433d9aaae32fc91d900810a9e0ad9fac2 [diff] |
[Flang] [OpenMP] [MLIR] [Lowering] Add lowering support for IS_DEVICE_PTR and HAS_DEVICE_ADDR clauses on OMP TARGET directive. (#88206) Added lowering support for IS_DEVICE_PTR and HAS_DEVICE_ADDR clauses for OMP TARGET directive and added related tests for these changes. IS_DEVICE_PTR and HAS_DEVICE_ADDR clauses apply to OMP TARGET directive OpenMP spec states The **is_device_ptr** clause indicates that its list items are device pointers. The **has_device_addr** clause indicates that its list items already have device addresses and therefore they may be directly accessed from a target device. Whereas USE_DEVICE_PTR and USE_DEVICE_ADDR clauses apply to OMP TARGET DATA directive and OpenMP spec for them states Each list item in the **use_device_ptr** clause results in a new list item that is a device pointer that refers to a device address Each list item in a **use_device_addr** clause that is present in the device data environment is treated as if it is implicitly mapped by a map clause on the construct with a map-type of alloc Fixed build error caused by Squash merge which needs rebase GitOrigin-RevId: 298ea9bfd50ca41c77e45065700df06adb6264ae
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.
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