800d949bb3
Implement the complete initial version of the Offload API, to the extent that is usable for simple offloading programs. Tested with a basic SYCL program. As far as possible, these are simple wrappers over existing functionality in the plugins. * Allocating and freeing memory (host, device, shared). * Creating a program * Creating a queue (wrapper over asynchronous stream resource) * Enqueuing memcpy operations * Enqueuing kernel executions * Waiting on (optional) output events from the enqueue operations * Waiting on a queue to finish Objects created with the API have reference counting semantics to handle their lifetime. They are created with an initial reference count of 1, which can be incremented and decremented with retain and release functions. They are freed when their reference count reaches 0. Platform and device objects are not reference counted, as they are expected to persist as long as the library is in use, and it's not meaningful for users to create or destroy them. Tests have been added to `offload.unittests`, including device code for testing program and kernel related functionality. The API should still be considered unstable and it's very likely we will need to change the existing entry points.
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
//===- offload_lib.cpp - Entry points for the new LLVM/Offload API --------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file pulls in the tablegen'd API entry point functions.
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//
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//===----------------------------------------------------------------------===//
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#include "OffloadImpl.hpp"
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#include "llvm/Support/raw_ostream.h"
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#include <OffloadAPI.h>
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#include <OffloadPrint.hpp>
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llvm::StringSet<> &errorStrs() {
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static llvm::StringSet<> ErrorStrs;
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return ErrorStrs;
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}
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ErrSetT &errors() {
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static ErrSetT Errors{};
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return Errors;
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}
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ol_code_location_t *¤tCodeLocation() {
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thread_local ol_code_location_t *CodeLoc = nullptr;
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return CodeLoc;
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}
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OffloadConfig &offloadConfig() {
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static OffloadConfig Config{};
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return Config;
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}
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namespace llvm {
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namespace offload {
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// Pull in the declarations for the implementation functions. The actual entry
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// points in this file wrap these.
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#include "OffloadImplFuncDecls.inc"
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} // namespace offload
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} // namespace llvm
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// Pull in the tablegen'd entry point definitions.
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#include "OffloadEntryPoints.inc"
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