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/CodeGen/TargetLoweringObjectFileImpl.h"
18 #include "llvm/MC/MCAsmInfo.h"
19 #include "llvm/PassManager.h"
20 #include "llvm/Support/TargetRegistry.h"
21 using namespace llvm;
22
LLVMInitializeMSP430Target()23 extern "C" void LLVMInitializeMSP430Target() {
24 // Register the target.
25 RegisterTargetMachine<MSP430TargetMachine> X(TheMSP430Target);
26 }
27
MSP430TargetMachine(const Target & T,StringRef TT,StringRef CPU,StringRef FS,const TargetOptions & Options,Reloc::Model RM,CodeModel::Model CM,CodeGenOpt::Level OL)28 MSP430TargetMachine::MSP430TargetMachine(const Target &T, StringRef TT,
29 StringRef CPU, StringRef FS,
30 const TargetOptions &Options,
31 Reloc::Model RM, CodeModel::Model CM,
32 CodeGenOpt::Level OL)
33 : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
34 TLOF(make_unique<TargetLoweringObjectFileELF>()),
35 Subtarget(TT, CPU, FS, *this) {
36 initAsmInfo();
37 }
38
~MSP430TargetMachine()39 MSP430TargetMachine::~MSP430TargetMachine() {}
40
41 namespace {
42 /// MSP430 Code Generator Pass Configuration Options.
43 class MSP430PassConfig : public TargetPassConfig {
44 public:
MSP430PassConfig(MSP430TargetMachine * TM,PassManagerBase & PM)45 MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM)
46 : TargetPassConfig(TM, PM) {}
47
getMSP430TargetMachine() const48 MSP430TargetMachine &getMSP430TargetMachine() const {
49 return getTM<MSP430TargetMachine>();
50 }
51
52 bool addInstSelector() override;
53 void addPreEmitPass() override;
54 };
55 } // namespace
56
createPassConfig(PassManagerBase & PM)57 TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) {
58 return new MSP430PassConfig(this, PM);
59 }
60
addInstSelector()61 bool MSP430PassConfig::addInstSelector() {
62 // Install an instruction selector.
63 addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
64 return false;
65 }
66
addPreEmitPass()67 void MSP430PassConfig::addPreEmitPass() {
68 // Must run branch selection immediately preceding the asm printer.
69 addPass(createMSP430BranchSelectionPass(), false);
70 }
71