Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/lib/Target/MSP430/MSP430TargetMachine.cpp

@@ -0,0 +1,91 @@
+//===-- MSP430TargetMachine.cpp - Define TargetMachine for MSP430 ---------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Top-level implementation for the MSP430 target.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MSP430TargetMachine.h"
+#include "MSP430.h"
+#include "llvm/CodeGen/Passes.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
+#include "llvm/CodeGen/TargetPassConfig.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/Support/TargetRegistry.h"
+using namespace llvm;
+
+extern "C" void LLVMInitializeMSP430Target() {
+  // Register the target.
+  RegisterTargetMachine<MSP430TargetMachine> X(getTheMSP430Target());
+}
+
+static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) {
+  if (!RM.hasValue())
+    return Reloc::Static;
+  return *RM;
+}
+
+static CodeModel::Model getEffectiveCodeModel(Optional<CodeModel::Model> CM) {
+  if (CM)
+    return *CM;
+  return CodeModel::Small;
+}
+
+static std::string computeDataLayout(const Triple &TT, StringRef CPU,
+                                     const TargetOptions &Options) {
+  return "e-m:e-p:16:16-i32:16-i64:16-f32:16-f64:16-a:8-n8:16-S16";
+}
+
+MSP430TargetMachine::MSP430TargetMachine(const Target &T, const Triple &TT,
+                                         StringRef CPU, StringRef FS,
+                                         const TargetOptions &Options,
+                                         Optional<Reloc::Model> RM,
+                                         Optional<CodeModel::Model> CM,
+                                         CodeGenOpt::Level OL, bool JIT)
+    : LLVMTargetMachine(T, computeDataLayout(TT, CPU, Options), TT, CPU, FS,
+                        Options, getEffectiveRelocModel(RM),
+                        getEffectiveCodeModel(CM), OL),
+      TLOF(make_unique<TargetLoweringObjectFileELF>()),
+      Subtarget(TT, CPU, FS, *this) {
+  initAsmInfo();
+}
+
+MSP430TargetMachine::~MSP430TargetMachine() {}
+
+namespace {
+/// MSP430 Code Generator Pass Configuration Options.
+class MSP430PassConfig : public TargetPassConfig {
+public:
+  MSP430PassConfig(MSP430TargetMachine &TM, PassManagerBase &PM)
+    : TargetPassConfig(TM, PM) {}
+
+  MSP430TargetMachine &getMSP430TargetMachine() const {
+    return getTM<MSP430TargetMachine>();
+  }
+
+  bool addInstSelector() override;
+  void addPreEmitPass() override;
+};
+} // namespace
+
+TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) {
+  return new MSP430PassConfig(*this, PM);
+}
+
+bool MSP430PassConfig::addInstSelector() {
+  // Install an instruction selector.
+  addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
+  return false;
+}
+
+void MSP430PassConfig::addPreEmitPass() {
+  // Must run branch selection immediately preceding the asm printer.
+  addPass(createMSP430BranchSelectionPass(), false);
+}