MSP430TargetMachine.cpp revision 2286f8dc4cec0625f7d7a14e2570926cf8599646 
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 "MSP430.h"
15#include "MSP430TargetAsmInfo.h"
16#include "MSP430TargetMachine.h"
17#include "llvm/Module.h"
18#include "llvm/PassManager.h"
19#include "llvm/CodeGen/Passes.h"
20#include "llvm/Target/TargetAsmInfo.h"
21#include "llvm/Target/TargetMachineRegistry.h"
22
23using namespace llvm;
24
25/// MSP430TargetMachineModule - Note that this is used on hosts that
26/// cannot link in a library unless there are references into the
27/// library.  In particular, it seems that it is not possible to get
28/// things to work on Win32 without this.  Though it is unused, do not
29/// remove it.
30extern "C" int MSP430TargetMachineModule;
31int MSP430TargetMachineModule = 0;
32
33
34// Register the targets
35static RegisterTarget<MSP430TargetMachine>
36X("msp430", "MSP430 [experimental]");
37
38// Force static initialization.
39extern "C" void LLVMInitializeMSP430Target() { }
40
41MSP430TargetMachine::MSP430TargetMachine(const Module &M,
42                                         const std::string &FS) :
43  Subtarget(*this, M, FS),
44  // FIXME: Check TargetData string.
45  DataLayout("e-p:16:8:8-i8:8:8-i16:8:8-i32:8:8"),
46  InstrInfo(*this), TLInfo(*this),
47  FrameInfo(TargetFrameInfo::StackGrowsDown, 2, -2) { }
48
49const TargetAsmInfo *MSP430TargetMachine::createTargetAsmInfo() const {
50  return new MSP430TargetAsmInfo(*this);
51}
52
53bool MSP430TargetMachine::addInstSelector(PassManagerBase &PM,
54                                          CodeGenOpt::Level OptLevel) {
55  // Install an instruction selector.
56  PM.add(createMSP430ISelDag(*this, OptLevel));
57  return false;
58}
59
60bool MSP430TargetMachine::addAssemblyEmitter(PassManagerBase &PM,
61                                             CodeGenOpt::Level OptLevel,
62                                             bool Verbose,
63                                             formatted_raw_ostream &Out) {
64  // Output assembly language.
65  PM.add(createMSP430CodePrinterPass(Out, *this, Verbose));
66  return false;
67}
68
69unsigned MSP430TargetMachine::getModuleMatchQuality(const Module &M) {
70  std::string TT = M.getTargetTriple();
71
72  // We strongly match msp430
73  if (TT.size() >= 6 && TT[0] == 'm' && TT[1] == 's' && TT[2] == 'p' &&
74      TT[3] == '4' &&  TT[4] == '3' && TT[5] == '0')
75    return 20;
76
77  return 0;
78}
79
80