contrib/llvm/lib/Target/XCore/XCoreTargetMachine.cpp

   1 //===-- XCoreTargetMachine.cpp - Define TargetMachine for XCore -----------===//
   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 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "MCTargetDesc/XCoreMCTargetDesc.h"
  14 #include "XCore.h"
  15 #include "XCoreTargetMachine.h"
  16 #include "XCoreTargetObjectFile.h"
  17 #include "XCoreTargetTransformInfo.h"
  18 #include "llvm/ADT/Optional.h"
  19 #include "llvm/ADT/STLExtras.h"
  20 #include "llvm/Analysis/TargetTransformInfo.h"
  21 #include "llvm/CodeGen/Passes.h"
  22 #include "llvm/CodeGen/TargetPassConfig.h"
  23 #include "llvm/Support/CodeGen.h"
  24 #include "llvm/Support/TargetRegistry.h"
  25
  26 using namespace llvm;
  27
  28 static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) {
  29   if (!RM.hasValue())
  30     return Reloc::Static;
  31   return *RM;
  32 }
  33
  34 /// Create an ILP32 architecture model
  35 ///
  36 XCoreTargetMachine::XCoreTargetMachine(const Target &T, const Triple &TT,
  37                                        StringRef CPU, StringRef FS,
  38                                        const TargetOptions &Options,
  39                                        Optional<Reloc::Model> RM,
  40                                        CodeModel::Model CM,
  41                                        CodeGenOpt::Level OL)
  42     : LLVMTargetMachine(
  43           T, "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:32-f64:32-a:0:32-n32",
  44           TT, CPU, FS, Options, getEffectiveRelocModel(RM), CM, OL),
  45       TLOF(llvm::make_unique<XCoreTargetObjectFile>()),
  46       Subtarget(TT, CPU, FS, *this) {
  47   initAsmInfo();
  48 }
  49
  50 XCoreTargetMachine::~XCoreTargetMachine() = default;
  51
  52 namespace {
  53
  54 /// XCore Code Generator Pass Configuration Options.
  55 class XCorePassConfig : public TargetPassConfig {
  56 public:
  57   XCorePassConfig(XCoreTargetMachine *TM, PassManagerBase &PM)
  58     : TargetPassConfig(TM, PM) {}
  59
  60   XCoreTargetMachine &getXCoreTargetMachine() const {
  61     return getTM<XCoreTargetMachine>();
  62   }
  63
  64   void addIRPasses() override;
  65   bool addPreISel() override;
  66   bool addInstSelector() override;
  67   void addPreEmitPass() override;
  68 };
  69
  70 } // end anonymous namespace
  71
  72 TargetPassConfig *XCoreTargetMachine::createPassConfig(PassManagerBase &PM) {
  73   return new XCorePassConfig(this, PM);
  74 }
  75
  76 void XCorePassConfig::addIRPasses() {
  77   addPass(createAtomicExpandPass());
  78
  79   TargetPassConfig::addIRPasses();
  80 }
  81
  82 bool XCorePassConfig::addPreISel() {
  83   addPass(createXCoreLowerThreadLocalPass());
  84   return false;
  85 }
  86
  87 bool XCorePassConfig::addInstSelector() {
  88   addPass(createXCoreISelDag(getXCoreTargetMachine(), getOptLevel()));
  89   return false;
  90 }
  91
  92 void XCorePassConfig::addPreEmitPass() {
  93   addPass(createXCoreFrameToArgsOffsetEliminationPass(), false);
  94 }
  95
  96 // Force static initialization.
  97 extern "C" void LLVMInitializeXCoreTarget() {
  98   RegisterTargetMachine<XCoreTargetMachine> X(getTheXCoreTarget());
  99 }
 100
 101 TargetIRAnalysis XCoreTargetMachine::getTargetIRAnalysis() {
 102   return TargetIRAnalysis([this](const Function &F) {
 103     return TargetTransformInfo(XCoreTTIImpl(this, F));
 104   });
 105 }