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 "MSP430MCAsmInfo.h"
16 #include "MSP430TargetMachine.h"
17 #include "llvm/PassManager.h"
18 #include "llvm/CodeGen/Passes.h"
19 #include "llvm/MC/MCAsmInfo.h"
20 #include "llvm/Target/TargetRegistry.h"
21 using namespace llvm;
22 
23 extern "C" void LLVMInitializeMSP430Target() {
24   // Register the target.
25   RegisterTargetMachine<MSP430TargetMachine> X(TheMSP430Target);
26   RegisterAsmInfo<MSP430MCAsmInfo> Z(TheMSP430Target);
27 }
28 
29 MSP430TargetMachine::MSP430TargetMachine(const Target &T,
30                                          const std::string &TT,
31                                          const std::string &FS) :
32   LLVMTargetMachine(T, TT),
33   Subtarget(TT, FS),
34   // FIXME: Check TargetData string.
35   DataLayout("e-p:16:16:16-i8:8:8-i16:16:16-i32:16:32-n8:16"),
36   InstrInfo(*this), TLInfo(*this), TSInfo(*this),
37   FrameInfo(TargetFrameInfo::StackGrowsDown, 2, -2) { }
38 
39 
40 bool MSP430TargetMachine::addInstSelector(PassManagerBase &PM,
41                                           CodeGenOpt::Level OptLevel) {
42   // Install an instruction selector.
43   PM.add(createMSP430ISelDag(*this, OptLevel));
44   return false;
45 }
46 
47 bool MSP430TargetMachine::addPreEmitPass(PassManagerBase &PM,
48                                          CodeGenOpt::Level OptLevel) {
49   // Must run branch selection immediately preceding the asm printer.
50   PM.add(createMSP430BranchSelectionPass());
51   return false;
52 }
53