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/IR/LegacyPassManager.h"
19 #include "llvm/MC/MCAsmInfo.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,const Triple & TT,StringRef CPU,StringRef FS,const TargetOptions & Options,Reloc::Model RM,CodeModel::Model CM,CodeGenOpt::Level OL)28 MSP430TargetMachine::MSP430TargetMachine(const Target &T, const Triple &TT,
29 StringRef CPU, StringRef FS,
30 const TargetOptions &Options,
31 Reloc::Model RM, CodeModel::Model CM,
32 CodeGenOpt::Level OL)
33 : LLVMTargetMachine(T, "e-m:e-p:16:16-i32:16:32-a:16-n8:16", TT, CPU, FS,
34 Options, RM, CM, OL),
35 TLOF(make_unique<TargetLoweringObjectFileELF>()),
36 // FIXME: Check DataLayout string.
37 Subtarget(TT, CPU, FS, *this) {
38 initAsmInfo();
39 }
40
~MSP430TargetMachine()41 MSP430TargetMachine::~MSP430TargetMachine() {}
42
43 namespace {
44 /// MSP430 Code Generator Pass Configuration Options.
45 class MSP430PassConfig : public TargetPassConfig {
46 public:
MSP430PassConfig(MSP430TargetMachine * TM,PassManagerBase & PM)47 MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM)
48 : TargetPassConfig(TM, PM) {}
49
getMSP430TargetMachine() const50 MSP430TargetMachine &getMSP430TargetMachine() const {
51 return getTM<MSP430TargetMachine>();
52 }
53
54 bool addInstSelector() override;
55 void addPreEmitPass() override;
56 };
57 } // namespace
58
createPassConfig(PassManagerBase & PM)59 TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) {
60 return new MSP430PassConfig(this, PM);
61 }
62
addInstSelector()63 bool MSP430PassConfig::addInstSelector() {
64 // Install an instruction selector.
65 addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
66 return false;
67 }
68
addPreEmitPass()69 void MSP430PassConfig::addPreEmitPass() {
70 // Must run branch selection immediately preceding the asm printer.
71 addPass(createMSP430BranchSelectionPass(), false);
72 }
73