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
124 lines
4.0 KiB
C++
124 lines
4.0 KiB
C++
//===-- XCoreTargetMachine.cpp - Define TargetMachine for XCore -----------===//
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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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//
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//===----------------------------------------------------------------------===//
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#include "XCoreTargetMachine.h"
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#include "TargetInfo/XCoreTargetInfo.h"
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#include "XCore.h"
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#include "XCoreMachineFunctionInfo.h"
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#include "XCoreTargetObjectFile.h"
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#include "XCoreTargetTransformInfo.h"
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/CodeGen/TargetPassConfig.h"
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#include "llvm/MC/TargetRegistry.h"
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#include "llvm/Support/CodeGen.h"
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#include "llvm/Support/Compiler.h"
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#include <optional>
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using namespace llvm;
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static Reloc::Model getEffectiveRelocModel(std::optional<Reloc::Model> RM) {
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return RM.value_or(Reloc::Static);
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}
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static CodeModel::Model
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getEffectiveXCoreCodeModel(std::optional<CodeModel::Model> CM) {
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if (CM) {
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if (*CM != CodeModel::Small && *CM != CodeModel::Large)
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report_fatal_error("Target only supports CodeModel Small or Large");
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return *CM;
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}
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return CodeModel::Small;
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}
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/// Create an ILP32 architecture model
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///
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XCoreTargetMachine::XCoreTargetMachine(const Target &T, const Triple &TT,
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StringRef CPU, StringRef FS,
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const TargetOptions &Options,
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std::optional<Reloc::Model> RM,
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std::optional<CodeModel::Model> CM,
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CodeGenOptLevel OL, bool JIT)
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: CodeGenTargetMachineImpl(
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T, "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:32-f64:32-a:0:32-n32",
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TT, CPU, FS, Options, getEffectiveRelocModel(RM),
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getEffectiveXCoreCodeModel(CM), OL),
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TLOF(std::make_unique<XCoreTargetObjectFile>()),
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Subtarget(TT, std::string(CPU), std::string(FS), *this) {
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initAsmInfo();
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}
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XCoreTargetMachine::~XCoreTargetMachine() = default;
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namespace {
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/// XCore Code Generator Pass Configuration Options.
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class XCorePassConfig : public TargetPassConfig {
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public:
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XCorePassConfig(XCoreTargetMachine &TM, PassManagerBase &PM)
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: TargetPassConfig(TM, PM) {}
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XCoreTargetMachine &getXCoreTargetMachine() const {
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return getTM<XCoreTargetMachine>();
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}
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void addIRPasses() override;
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bool addPreISel() override;
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bool addInstSelector() override;
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void addPreEmitPass() override;
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};
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} // end anonymous namespace
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TargetPassConfig *XCoreTargetMachine::createPassConfig(PassManagerBase &PM) {
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return new XCorePassConfig(*this, PM);
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}
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void XCorePassConfig::addIRPasses() {
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addPass(createAtomicExpandLegacyPass());
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TargetPassConfig::addIRPasses();
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}
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bool XCorePassConfig::addPreISel() {
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addPass(createXCoreLowerThreadLocalPass());
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return false;
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}
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bool XCorePassConfig::addInstSelector() {
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addPass(createXCoreISelDag(getXCoreTargetMachine(), getOptLevel()));
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return false;
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}
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void XCorePassConfig::addPreEmitPass() {
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addPass(createXCoreFrameToArgsOffsetEliminationPass());
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}
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// Force static initialization.
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extern "C" LLVM_ABI LLVM_EXTERNAL_VISIBILITY void LLVMInitializeXCoreTarget() {
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RegisterTargetMachine<XCoreTargetMachine> X(getTheXCoreTarget());
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PassRegistry &PR = *PassRegistry::getPassRegistry();
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initializeXCoreAsmPrinterPass(PR);
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initializeXCoreDAGToDAGISelLegacyPass(PR);
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initializeXCoreLowerThreadLocalPass(PR);
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}
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TargetTransformInfo
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XCoreTargetMachine::getTargetTransformInfo(const Function &F) const {
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return TargetTransformInfo(std::make_unique<XCoreTTIImpl>(this, F));
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}
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MachineFunctionInfo *XCoreTargetMachine::createMachineFunctionInfo(
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BumpPtrAllocator &Allocator, const Function &F,
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const TargetSubtargetInfo *STI) const {
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return XCoreFunctionInfo::create<XCoreFunctionInfo>(Allocator, F, STI);
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}
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