19658d1474
## Purpose This patch is one in a series of code-mods that annotate LLVM’s public interface for export. This patch annotates the `llvm/Target` library. These annotations currently have no meaningful impact on the LLVM build; however, they are a prerequisite to support an LLVM Windows DLL (shared library) build. ## Background This effort is tracked in #109483. Additional context is provided in [this discourse](https://discourse.llvm.org/t/psa-annotating-llvm-public-interface/85307), and documentation for `LLVM_ABI` and related annotations is found in the LLVM repo [here](https://github.com/llvm/llvm-project/blob/main/llvm/docs/InterfaceExportAnnotations.rst). A sub-set of these changes were generated automatically using the [Interface Definition Scanner (IDS)](https://github.com/compnerd/ids) tool, followed formatting with `git clang-format`. The bulk of this change is manual additions of `LLVM_ABI` to `LLVMInitializeX` functions defined in .cpp files under llvm/lib/Target. Adding `LLVM_ABI` to the function implementation is required here because they do not `#include "llvm/Support/TargetSelect.h"`, which contains the declarations for this functions and was already updated with `LLVM_ABI` in a previous patch. I considered patching these files with `#include "llvm/Support/TargetSelect.h"` instead, but since TargetSelect.h is a large file with a bunch of preprocessor x-macro stuff in it I was concerned it would unnecessarily impact compile times. In addition, a number of unit tests under llvm/unittests/Target required additional dependencies to make them build correctly against the LLVM DLL on Windows using MSVC. ## Validation Local builds and tests to validate cross-platform compatibility. This included llvm, clang, and lldb on the following configurations: - Windows with MSVC - Windows with Clang - Linux with GCC - Linux with Clang - Darwin with Clang
53 lines
2.1 KiB
C++
53 lines
2.1 KiB
C++
//===-- AArch64TargetInfo.cpp - AArch64 Target Implementation -----------------===//
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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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#include "TargetInfo/AArch64TargetInfo.h"
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#include "llvm/MC/TargetRegistry.h"
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#include "llvm/Support/Compiler.h"
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using namespace llvm;
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Target &llvm::getTheAArch64leTarget() {
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static Target TheAArch64leTarget;
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return TheAArch64leTarget;
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}
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Target &llvm::getTheAArch64beTarget() {
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static Target TheAArch64beTarget;
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return TheAArch64beTarget;
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}
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Target &llvm::getTheAArch64_32Target() {
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static Target TheAArch64leTarget;
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return TheAArch64leTarget;
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}
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Target &llvm::getTheARM64Target() {
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static Target TheARM64Target;
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return TheARM64Target;
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}
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Target &llvm::getTheARM64_32Target() {
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static Target TheARM64_32Target;
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return TheARM64_32Target;
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}
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extern "C" LLVM_ABI LLVM_EXTERNAL_VISIBILITY void
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LLVMInitializeAArch64TargetInfo() {
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// Now register the "arm64" name for use with "-march". We don't want it to
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// take possession of the Triple::aarch64 tags though.
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TargetRegistry::RegisterTarget(getTheARM64Target(), "arm64",
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"ARM64 (little endian)", "AArch64",
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[](Triple::ArchType) { return false; }, true);
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TargetRegistry::RegisterTarget(getTheARM64_32Target(), "arm64_32",
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"ARM64 (little endian ILP32)", "AArch64",
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[](Triple::ArchType) { return false; }, true);
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RegisterTarget<Triple::aarch64, /*HasJIT=*/true> Z(
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getTheAArch64leTarget(), "aarch64", "AArch64 (little endian)", "AArch64");
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RegisterTarget<Triple::aarch64_be, /*HasJIT=*/true> W(
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getTheAArch64beTarget(), "aarch64_be", "AArch64 (big endian)", "AArch64");
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RegisterTarget<Triple::aarch64_32, /*HasJIT=*/true> X(
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getTheAArch64_32Target(), "aarch64_32", "AArch64 (little endian ILP32)", "AArch64");
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}
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