LLVM  4.0.0
MSP430TargetMachine.cpp
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1 //===-- MSP430TargetMachine.cpp - Define TargetMachine for MSP430 ---------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // Top-level implementation for the MSP430 target.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "MSP430TargetMachine.h"
15 #include "MSP430.h"
16 #include "llvm/CodeGen/Passes.h"
20 #include "llvm/MC/MCAsmInfo.h"
22 using namespace llvm;
23 
24 extern "C" void LLVMInitializeMSP430Target() {
25  // Register the target.
27 }
28 
30  if (!RM.hasValue())
31  return Reloc::Static;
32  return *RM;
33 }
34 
36  StringRef CPU, StringRef FS,
37  const TargetOptions &Options,
41  : LLVMTargetMachine(T, "e-m:e-p:16:16-i32:16:32-a:16-n8:16", TT, CPU, FS,
42  Options, getEffectiveRelocModel(RM), CM, OL),
44  // FIXME: Check DataLayout string.
45  Subtarget(TT, CPU, FS, *this) {
46  initAsmInfo();
47 }
48 
50 
51 namespace {
52 /// MSP430 Code Generator Pass Configuration Options.
53 class MSP430PassConfig : public TargetPassConfig {
54 public:
55  MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM)
56  : TargetPassConfig(TM, PM) {}
57 
58  MSP430TargetMachine &getMSP430TargetMachine() const {
59  return getTM<MSP430TargetMachine>();
60  }
61 
62  bool addInstSelector() override;
63  void addPreEmitPass() override;
64 };
65 } // namespace
66 
68  return new MSP430PassConfig(this, PM);
69 }
70 
71 bool MSP430PassConfig::addInstSelector() {
72  // Install an instruction selector.
73  addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
74  return false;
75 }
76 
77 void MSP430PassConfig::addPreEmitPass() {
78  // Must run branch selection immediately preceding the asm printer.
79  addPass(createMSP430BranchSelectionPass(), false);
80 }
Target & getTheMSP430Target()
bool hasValue() const
Definition: Optional.h:125
void LLVMInitializeMSP430Target()
FunctionPass * createMSP430ISelDag(MSP430TargetMachine &TM, CodeGenOpt::Level OptLevel)
createMSP430ISelDag - This pass converts a legalized DAG into a MSP430-specific DAG, ready for instruction scheduling.
Target-Independent Code Generator Pass Configuration Options.
FunctionPass * createMSP430BranchSelectionPass()
Returns an instance of the Branch Selection Pass.
std::enable_if<!std::is_array< T >::value, std::unique_ptr< T > >::type make_unique(Args &&...args)
Constructs a new T() with the given args and returns a unique_ptr<T> which owns the object...
Definition: STLExtras.h:845
static Reloc::Model getEffectiveRelocModel(Optional< Reloc::Model > RM)
static GCMetadataPrinterRegistry::Add< ErlangGCPrinter > X("erlang","erlang-compatible garbage collector")
This class describes a target machine that is implemented with the LLVM target-independent code gener...
MSP430TargetMachine.
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
MSP430TargetMachine(const Target &T, const Triple &TT, StringRef CPU, StringRef FS, const TargetOptions &Options, Optional< Reloc::Model > RM, CodeModel::Model CM, CodeGenOpt::Level OL)
Target - Wrapper for Target specific information.
TargetPassConfig * createPassConfig(PassManagerBase &PM) override
Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of ...
RegisterTargetMachine - Helper template for registering a target machine implementation, for use in the target machine initialization function.
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:47