X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FTargetMachine.cpp;h=382571982b96fc8de5ee98d7b93b0d3864a49c6e;hb=fef904d0e824a2c587f8c1063b6c4fbf47fec898;hp=8e114fc0b271f5f3bc14862c2148ee18a037634d;hpb=53594deff4de7ced39236d2c569fb5bef6076fd7;p=oota-llvm.git

diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index 8e114fc0b27..382571982b9 100644
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -1,62 +1,164 @@
 //===-- TargetMachine.cpp - General Target Information ---------------------==//
-// 
+//
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
 //===----------------------------------------------------------------------===//
 //
 // This file describes the general parts of a Target machine.
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/GlobalAlias.h"
+#include "llvm/GlobalValue.h"
+#include "llvm/GlobalVariable.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCCodeGenInfo.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Type.h"
-#include "llvm/CodeGen/IntrinsicLowering.h"
-#include "Support/CommandLine.h"
+#include "llvm/Support/CommandLine.h"
 using namespace llvm;
 
 //---------------------------------------------------------------------------
 // Command-line options that tend to be useful on more than one back-end.
 //
 
-bool llvm::PrintMachineCode;
-bool llvm::NoFramePointerElim;
-
-namespace {
-  cl::opt<bool, true> PrintCode("print-machineinstrs",
-    cl::desc("Print generated machine code"),
-    cl::location(PrintMachineCode), cl::init(false));
+namespace llvm {
+  bool HasDivModLibcall;
+  bool AsmVerbosityDefault(false);
+}
 
-  cl::opt<bool, true> 
-    DisableFPElim("disable-fp-elim",
-                  cl::desc("Disable frame pointer elimination optimization"),
-                  cl::location(NoFramePointerElim),
-                  cl::init(false));
-};
+static cl::opt<bool>
+DataSections("fdata-sections",
+  cl::desc("Emit data into separate sections"),
+  cl::init(false));
+static cl::opt<bool>
+FunctionSections("ffunction-sections",
+  cl::desc("Emit functions into separate sections"),
+  cl::init(false));
 
 //---------------------------------------------------------------------------
 // TargetMachine Class
 //
-TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
-                             bool LittleEndian,
-                             unsigned char PtrSize, unsigned char PtrAl,
-                             unsigned char DoubleAl, unsigned char FloatAl,
-                             unsigned char LongAl, unsigned char IntAl,
-                             unsigned char ShortAl, unsigned char ByteAl)
-  : Name(name), DataLayout(name, LittleEndian,
-                           PtrSize, PtrAl, DoubleAl, FloatAl, LongAl,
-                           IntAl, ShortAl, ByteAl) {
-  IL = il ? il : new DefaultIntrinsicLowering();
-}
-TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
-                             const Module &M)
-  : Name(name), DataLayout(name, &M) {
-  IL = il ? il : new DefaultIntrinsicLowering();
+
+TargetMachine::TargetMachine(const Target &T,
+                             StringRef TT, StringRef CPU, StringRef FS,
+                             const TargetOptions &Options)
+  : TheTarget(T), TargetTriple(TT), TargetCPU(CPU), TargetFS(FS),
+    CodeGenInfo(0), AsmInfo(0),
+    MCRelaxAll(false),
+    MCNoExecStack(false),
+    MCSaveTempLabels(false),
+    MCUseLoc(true),
+    MCUseCFI(true),
+    MCUseDwarfDirectory(false),
+    Options(Options) {
 }
 
 TargetMachine::~TargetMachine() {
-  delete IL;
+  delete CodeGenInfo;
+  delete AsmInfo;
+}
+
+/// getRelocationModel - Returns the code generation relocation model. The
+/// choices are static, PIC, and dynamic-no-pic, and target default.
+Reloc::Model TargetMachine::getRelocationModel() const {
+  if (!CodeGenInfo)
+    return Reloc::Default;
+  return CodeGenInfo->getRelocationModel();
+}
+
+/// getCodeModel - Returns the code model. The choices are small, kernel,
+/// medium, large, and target default.
+CodeModel::Model TargetMachine::getCodeModel() const {
+  if (!CodeGenInfo)
+    return CodeModel::Default;
+  return CodeGenInfo->getCodeModel();
+}
+
+/// Get the IR-specified TLS model for Var.
+static TLSModel::Model getSelectedTLSModel(const GlobalVariable *Var) {
+  switch (Var->getThreadLocalMode()) {
+  case GlobalVariable::NotThreadLocal:
+    llvm_unreachable("getSelectedTLSModel for non-TLS variable");
+    break;
+  case GlobalVariable::GeneralDynamicTLSModel:
+    return TLSModel::GeneralDynamic;
+  case GlobalVariable::LocalDynamicTLSModel:
+    return TLSModel::LocalDynamic;
+  case GlobalVariable::InitialExecTLSModel:
+    return TLSModel::InitialExec;
+  case GlobalVariable::LocalExecTLSModel:
+    return TLSModel::LocalExec;
+  }
+  llvm_unreachable("invalid TLS model");
+}
+
+TLSModel::Model TargetMachine::getTLSModel(const GlobalValue *GV) const {
+  // If GV is an alias then use the aliasee for determining
+  // thread-localness.
+  if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV))
+    GV = GA->resolveAliasedGlobal(false);
+  const GlobalVariable *Var = cast<GlobalVariable>(GV);
+
+  bool isLocal = Var->hasLocalLinkage();
+  bool isDeclaration = Var->isDeclaration();
+  bool isPIC = getRelocationModel() == Reloc::PIC_;
+  bool isPIE = Options.PositionIndependentExecutable;
+  // FIXME: what should we do for protected and internal visibility?
+  // For variables, is internal different from hidden?
+  bool isHidden = Var->hasHiddenVisibility();
+
+  TLSModel::Model Model;
+  if (isPIC && !isPIE) {
+    if (isLocal || isHidden)
+      Model = TLSModel::LocalDynamic;
+    else
+      Model = TLSModel::GeneralDynamic;
+  } else {
+    if (!isDeclaration || isHidden)
+      Model = TLSModel::LocalExec;
+    else
+      Model = TLSModel::InitialExec;
+  }
+
+  // If the user specified a more specific model, use that.
+  TLSModel::Model SelectedModel = getSelectedTLSModel(Var);
+  if (SelectedModel > Model)
+    return SelectedModel;
+
+  return Model;
+}
+
+/// getOptLevel - Returns the optimization level: None, Less,
+/// Default, or Aggressive.
+CodeGenOpt::Level TargetMachine::getOptLevel() const {
+  if (!CodeGenInfo)
+    return CodeGenOpt::Default;
+  return CodeGenInfo->getOptLevel();
+}
+
+bool TargetMachine::getAsmVerbosityDefault() {
+  return AsmVerbosityDefault;
+}
+
+void TargetMachine::setAsmVerbosityDefault(bool V) {
+  AsmVerbosityDefault = V;
 }
 
+bool TargetMachine::getFunctionSections() {
+  return FunctionSections;
+}
+
+bool TargetMachine::getDataSections() {
+  return DataSections;
+}
+
+void TargetMachine::setFunctionSections(bool V) {
+  FunctionSections = V;
+}
+
+void TargetMachine::setDataSections(bool V) {
+  DataSections = V;
+}