| commit | ac52d9dd984e23111d5d1a370b1be4bd105ab4c7 | [log] [tgz] |
|---|---|---|
| author | Raghu Maddhipatla <7686592+raghavendhra@users.noreply.github.com> | Tue Apr 09 14:59:20 2024 -0500 |
| committer | Copybara-Service <copybara-worker@google.com> | Tue Apr 09 13:05:45 2024 -0700 |
| tree | b1de39f736fd076b7e05778af7d563fa26e21d15 | |
| parent | 21568eb6c63d72087d053bcb0340a9bb18776bdd [diff] |
[Flang] [OpenMP] [Semantics] [MLIR] [Lowering] Add lowering support for IS_DEVICE_PTR and HAS_DEVICE_ADDR clauses on OMP TARGET directive. (#74187) 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` GitOrigin-RevId: 9d9560facb5597e0232ab15716a7915a33d4f0a6
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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