LLVM 17.0.0git
MSP430TargetMachine.cpp
Go to the documentation of this file.
1//===-- MSP430TargetMachine.cpp - Define TargetMachine for MSP430 ---------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Top-level implementation for the MSP430 target.
10//
11//===----------------------------------------------------------------------===//
12
13#include "MSP430TargetMachine.h"
14#include "MSP430.h"
17#include "llvm/CodeGen/Passes.h"
20#include "llvm/MC/MCAsmInfo.h"
22#include <optional>
23using namespace llvm;
24
26 // Register the target.
30}
31
32static Reloc::Model getEffectiveRelocModel(std::optional<Reloc::Model> RM) {
33 return RM.value_or(Reloc::Static);
34}
35
36static std::string computeDataLayout(const Triple &TT, StringRef CPU,
37 const TargetOptions &Options) {
38 return "e-m:e-p:16:16-i32:16-i64:16-f32:16-f64:16-a:8-n8:16-S16";
39}
40
42 StringRef CPU, StringRef FS,
44 std::optional<Reloc::Model> RM,
45 std::optional<CodeModel::Model> CM,
46 CodeGenOpt::Level OL, bool JIT)
47 : LLVMTargetMachine(T, computeDataLayout(TT, CPU, Options), TT, CPU, FS,
49 getEffectiveCodeModel(CM, CodeModel::Small), OL),
50 TLOF(std::make_unique<TargetLoweringObjectFileELF>()),
51 Subtarget(TT, std::string(CPU), std::string(FS), *this) {
53}
54
56
57namespace {
58/// MSP430 Code Generator Pass Configuration Options.
59class MSP430PassConfig : public TargetPassConfig {
60public:
61 MSP430PassConfig(MSP430TargetMachine &TM, PassManagerBase &PM)
62 : TargetPassConfig(TM, PM) {}
63
64 MSP430TargetMachine &getMSP430TargetMachine() const {
65 return getTM<MSP430TargetMachine>();
66 }
67
68 bool addInstSelector() override;
69 void addPreEmitPass() override;
70};
71} // namespace
72
74 return new MSP430PassConfig(*this, PM);
75}
76
78 BumpPtrAllocator &Allocator, const Function &F,
79 const TargetSubtargetInfo *STI) const {
80 return MSP430MachineFunctionInfo::create<MSP430MachineFunctionInfo>(Allocator,
81 F, STI);
82}
83
84bool MSP430PassConfig::addInstSelector() {
85 // Install an instruction selector.
86 addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
87 return false;
88}
89
90void MSP430PassConfig::addPreEmitPass() {
91 // Must run branch selection immediately preceding the asm printer.
93}
#define LLVM_EXTERNAL_VISIBILITY
Definition: Compiler.h:127
static GCMetadataPrinterRegistry::Add< ErlangGCPrinter > X("erlang", "erlang-compatible garbage collector")
static LVOptions Options
Definition: LVOptions.cpp:25
static std::string computeDataLayout()
#define F(x, y, z)
Definition: MD5.cpp:55
LLVM_EXTERNAL_VISIBILITY void LLVMInitializeMSP430Target()
static Reloc::Model getEffectiveRelocModel(std::optional< Reloc::Model > RM)
const char LLVMTargetMachineRef TM
Basic Register Allocator
Target-Independent Code Generator Pass Configuration Options pass.
Allocate memory in an ever growing pool, as if by bump-pointer.
Definition: Allocator.h:66
This class describes a target machine that is implemented with the LLVM target-independent code gener...
MachineFunctionInfo * createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F, const TargetSubtargetInfo *STI) const override
Create the target's instance of MachineFunctionInfo.
TargetPassConfig * createPassConfig(PassManagerBase &PM) override
Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of ...
MSP430TargetMachine(const Target &T, const Triple &TT, StringRef CPU, StringRef FS, const TargetOptions &Options, std::optional< Reloc::Model > RM, std::optional< CodeModel::Model > CM, CodeGenOpt::Level OL, bool JIT)
PassRegistry - This class manages the registration and intitialization of the pass subsystem as appli...
Definition: PassRegistry.h:38
static PassRegistry * getPassRegistry()
getPassRegistry - Access the global registry object, which is automatically initialized at applicatio...
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
std::unique_ptr< const MCSubtargetInfo > STI
Target-Independent Code Generator Pass Configuration Options.
TargetSubtargetInfo - Generic base class for all target subtargets.
Target - Wrapper for Target specific information.
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
PassManagerBase - An abstract interface to allow code to add passes to a pass manager without having ...
Level
Code generation optimization level.
Definition: CodeGen.h:57
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
void initializeMSP430DAGToDAGISelPass(PassRegistry &)
Target & getTheMSP430Target()
FunctionPass * createMSP430BranchSelectionPass()
Returns an instance of the Branch Selection Pass.
CodeModel::Model getEffectiveCodeModel(std::optional< CodeModel::Model > CM, CodeModel::Model Default)
Helper method for getting the code model, returning Default if CM does not have a value.
FunctionPass * createMSP430ISelDag(MSP430TargetMachine &TM, CodeGenOpt::Level OptLevel)
createMSP430ISelDag - This pass converts a legalized DAG into a MSP430-specific DAG,...
Definition: BitVector.h:851
MachineFunctionInfo - This class can be derived from and used by targets to hold private target-speci...
RegisterTargetMachine - Helper template for registering a target machine implementation,...