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9af311f3de
Add the Lanai backend to lib/Target. General Lanai backend discussion on llvm-dev thread "[RFC] Lanai backend" (http://lists.llvm.org/pipermail/llvm-dev/2016-February/095118.html). Differential Revision: http://reviews.llvm.org/D17011 llvm-svn: 264578
111 lines
3.8 KiB
C++
111 lines
3.8 KiB
C++
//===-- LanaiTargetMachine.cpp - Define TargetMachine for Lanai ---------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Implements the info about Lanai target spec.
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//
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//===----------------------------------------------------------------------===//
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#include "LanaiTargetMachine.h"
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#include "Lanai.h"
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#include "LanaiTargetObjectFile.h"
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#include "LanaiTargetTransformInfo.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/TargetLoweringObjectFileImpl.h"
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#include "llvm/Support/FormattedStream.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Target/TargetOptions.h"
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using namespace llvm;
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namespace llvm {
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void initializeLanaiMemAluCombinerPass(PassRegistry &);
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void initializeLanaiSetflagAluCombinerPass(PassRegistry &);
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} // namespace llvm
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extern "C" void LLVMInitializeLanaiTarget() {
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// Register the target.
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RegisterTargetMachine<LanaiTargetMachine> registered_target(TheLanaiTarget);
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}
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static std::string computeDataLayout(const Triple &TT) {
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// Data layout (keep in sync with clang/lib/Basic/Targets.cpp)
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return "E" // Big endian
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"-m:e" // ELF name manging
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"-p:32:32" // 32-bit pointers, 32 bit aligned
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"-i64:64" // 64 bit integers, 64 bit aligned
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"-a:0:32" // 32 bit alignment of objects of aggregate type
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"-n32" // 32 bit native integer width
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"-S64"; // 64 bit natural stack alignment
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}
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LanaiTargetMachine::LanaiTargetMachine(const Target &TheTarget,
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const Triple &TargetTriple,
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StringRef Cpu, StringRef FeatureString,
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const TargetOptions &Options,
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Reloc::Model RelocationModel,
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CodeModel::Model CodeModel,
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CodeGenOpt::Level OptLevel)
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: LLVMTargetMachine(TheTarget, computeDataLayout(TargetTriple),
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TargetTriple, Cpu, FeatureString, Options,
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RelocationModel, CodeModel, OptLevel),
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Subtarget(TargetTriple, Cpu, FeatureString, *this, Options,
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RelocationModel, CodeModel, OptLevel),
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TLOF(new LanaiTargetObjectFile()) {
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initAsmInfo();
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}
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TargetIRAnalysis LanaiTargetMachine::getTargetIRAnalysis() {
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return TargetIRAnalysis([this](const Function &F) {
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return TargetTransformInfo(LanaiTTIImpl(this, F));
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});
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}
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namespace {
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// Lanai Code Generator Pass Configuration Options.
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class LanaiPassConfig : public TargetPassConfig {
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public:
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LanaiPassConfig(LanaiTargetMachine *TM, PassManagerBase *PassManager)
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: TargetPassConfig(TM, *PassManager) {}
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LanaiTargetMachine &getLanaiTargetMachine() const {
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return getTM<LanaiTargetMachine>();
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}
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bool addInstSelector() override;
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void addPreSched2() override;
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void addPreEmitPass() override;
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};
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} // namespace
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TargetPassConfig *
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LanaiTargetMachine::createPassConfig(PassManagerBase &PassManager) {
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return new LanaiPassConfig(this, &PassManager);
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}
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// Install an instruction selector pass.
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bool LanaiPassConfig::addInstSelector() {
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addPass(createLanaiISelDag(getLanaiTargetMachine()));
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return false;
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}
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// Implemented by targets that want to run passes immediately before
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// machine code is emitted.
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void LanaiPassConfig::addPreEmitPass() {
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addPass(createLanaiDelaySlotFillerPass(getLanaiTargetMachine()));
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}
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// Run passes after prolog-epilog insertion and before the second instruction
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// scheduling pass.
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void LanaiPassConfig::addPreSched2() {
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addPass(createLanaiMemAluCombinerPass());
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addPass(createLanaiSetflagAluCombinerPass());
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}
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