MSP430TargetMachine.cpp revision cd81d94322a39503e4a3e87b6ee03d4fcb3465fb 
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"
17#include "llvm/MC/MCAsmInfo.h"
18#include "llvm/PassManager.h"
19#include "llvm/Support/TargetRegistry.h"
20using namespace llvm;
21
22extern "C" void LLVMInitializeMSP430Target() {
23  // Register the target.
24  RegisterTargetMachine<MSP430TargetMachine> X(TheMSP430Target);
25}
26
27MSP430TargetMachine::MSP430TargetMachine(const Target &T, StringRef TT,
28                                         StringRef CPU, StringRef FS,
29                                         const TargetOptions &Options,
30                                         Reloc::Model RM, CodeModel::Model CM,
31                                         CodeGenOpt::Level OL)
32    : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
33      Subtarget(TT, CPU, FS, *this) {
34  initAsmInfo();
35}
36
37namespace {
38/// MSP430 Code Generator Pass Configuration Options.
39class MSP430PassConfig : public TargetPassConfig {
40public:
41  MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM)
42    : TargetPassConfig(TM, PM) {}
43
44  MSP430TargetMachine &getMSP430TargetMachine() const {
45    return getTM<MSP430TargetMachine>();
46  }
47
48  bool addInstSelector() override;
49  bool addPreEmitPass() override;
50};
51} // namespace
52
53TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) {
54  return new MSP430PassConfig(this, PM);
55}
56
57bool MSP430PassConfig::addInstSelector() {
58  // Install an instruction selector.
59  addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
60  return false;
61}
62
63bool MSP430PassConfig::addPreEmitPass() {
64  // Must run branch selection immediately preceding the asm printer.
65  addPass(createMSP430BranchSelectionPass());
66  return false;
67}
68