MSP430TargetMachine.cpp revision 3b9a911efcf280950f878a050728450423875639 
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/PassManager.h"
17#include "llvm/CodeGen/Passes.h"
18#include "llvm/MC/MCAsmInfo.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,
28                                         StringRef TT,
29                                         StringRef CPU,
30                                         StringRef FS,
31                                         const TargetOptions &Options,
32                                         Reloc::Model RM, CodeModel::Model CM,
33                                         CodeGenOpt::Level OL)
34  : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
35    Subtarget(TT, CPU, FS),
36    // FIXME: Check DataLayout string.
37    DL("e-p:16:16:16-i8:8:8-i16:16:16-i32:16:32-n8:16"),
38    InstrInfo(*this), TLInfo(*this), TSInfo(*this),
39    FrameLowering(Subtarget) { }
40
41namespace {
42/// MSP430 Code Generator Pass Configuration Options.
43class MSP430PassConfig : public TargetPassConfig {
44public:
45  MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM)
46    : TargetPassConfig(TM, PM) {}
47
48  MSP430TargetMachine &getMSP430TargetMachine() const {
49    return getTM<MSP430TargetMachine>();
50  }
51
52  virtual bool addInstSelector();
53  virtual bool addPreEmitPass();
54};
55} // namespace
56
57TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) {
58  return new MSP430PassConfig(this, PM);
59}
60
61bool MSP430PassConfig::addInstSelector() {
62  // Install an instruction selector.
63  addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
64  return false;
65}
66
67bool MSP430PassConfig::addPreEmitPass() {
68  // Must run branch selection immediately preceding the asm printer.
69  addPass(createMSP430BranchSelectionPass());
70  return false;
71}
72