- Move CodeModel from a TargetMachine global option to MCCodeGenInfo.

- Introduce JITDefault code model. This tells targets to set different default
  code model for JIT. This eliminates the ugly hack in TargetMachine where
  code model is changed after construction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135580 91177308-0d34-0410-b5e6-96231b3b80d8

47 files changed, 184 insertions, 195 deletions

diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index 1a4a6546fc..de2c8e4ffa 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -105,23 +105,12 @@ EnableFastISelOption("fast-isel", cl::Hidden,
 
 LLVMTargetMachine::LLVMTargetMachine(const Target &T, StringRef Triple,
                                      StringRef CPU, StringRef FS,
-                                     Reloc::Model RM)
+                                     Reloc::Model RM, CodeModel::Model CM)
   : TargetMachine(T, Triple, CPU, FS) {
-  CodeGenInfo = T.createMCCodeGenInfo(Triple, RM);
+  CodeGenInfo = T.createMCCodeGenInfo(Triple, RM, CM);
   AsmInfo = T.createMCAsmInfo(Triple);
 }
 
-// Set the default code model for the JIT for a generic target.
-// FIXME: Is small right here? or .is64Bit() ? Large : Small?
-void LLVMTargetMachine::setCodeModelForJIT() {
-  setCodeModel(CodeModel::Small);
-}
-
-// Set the default code model for static compilation for a generic target.
-void LLVMTargetMachine::setCodeModelForStatic() {
-  setCodeModel(CodeModel::Small);
-}
-
 bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
                                             formatted_raw_ostream &Out,
                                             CodeGenFileType FileType,
@@ -201,8 +190,6 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
 
   PM.add(Printer);
 
-  // Make sure the code model is set.
-  setCodeModelForStatic();
   PM.add(createGCInfoDeleter());
   return false;
 }
@@ -217,9 +204,6 @@ bool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM,
                                                    JITCodeEmitter &JCE,
                                                    CodeGenOpt::Level OptLevel,
                                                    bool DisableVerify) {
-  // Make sure the code model is set.
-  setCodeModelForJIT();
-
   // Add common CodeGen passes.
   MCContext *Ctx = 0;
   if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Ctx))
@@ -273,9 +257,6 @@ bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM,
 
   PM.add(Printer);
 
-  // Make sure the code model is set.
-  setCodeModelForJIT();
-
   return false; // success!
 }
 
diff --git a/lib/ExecutionEngine/ExecutionEngine.cpp b/lib/ExecutionEngine/ExecutionEngine.cpp
index 8f5e190a2b..525877b689 100644
--- a/lib/ExecutionEngine/ExecutionEngine.cpp
+++ b/lib/ExecutionEngine/ExecutionEngine.cpp
@@ -437,9 +437,8 @@ ExecutionEngine *ExecutionEngine::createJIT(Module *M,
   SmallVector<std::string, 1> MAttrs;
 
   TargetMachine *TM =
-    EngineBuilder::selectTarget(M, MArch, MCPU, MAttrs, RM, ErrorStr);
+    EngineBuilder::selectTarget(M, MArch, MCPU, MAttrs, RM, CMM, ErrorStr);
   if (!TM || (ErrorStr && ErrorStr->length() > 0)) return 0;
-  TM->setCodeModel(CMM);
 
   return ExecutionEngine::JITCtor(M, ErrorStr, JMM, OptLevel, GVsWithCode, TM);
 }
@@ -467,9 +466,8 @@ ExecutionEngine *EngineBuilder::create() {
   // try making a JIT.
   if (WhichEngine & EngineKind::JIT) {
     if (TargetMachine *TM = EngineBuilder::selectTarget(M, MArch, MCPU, MAttrs,
-                                                        RelocModel, ErrorStr)) {
-      TM->setCodeModel(CMModel);
-
+                                                        RelocModel, CMModel,
+                                                        ErrorStr)) {
       if (UseMCJIT && ExecutionEngine::MCJITCtor) {
         ExecutionEngine *EE =
           ExecutionEngine::MCJITCtor(M, ErrorStr, JMM, OptLevel,
diff --git a/lib/ExecutionEngine/JIT/JIT.h b/lib/ExecutionEngine/JIT/JIT.h
index b50ec5f54f..92dcb0e995 100644
--- a/lib/ExecutionEngine/JIT/JIT.h
+++ b/lib/ExecutionEngine/JIT/JIT.h
@@ -101,7 +101,7 @@ public:
                                    CodeGenOpt::Default,
                                  bool GVsWithCode = true,
                                  Reloc::Model RM = Reloc::Default,
-                                 CodeModel::Model CMM = CodeModel::Default) {
+                                 CodeModel::Model CMM = CodeModel::JITDefault) {
     return ExecutionEngine::createJIT(M, Err, JMM, OptLevel, GVsWithCode,
                                       RM, CMM);
   }
diff --git a/lib/ExecutionEngine/TargetSelect.cpp b/lib/ExecutionEngine/TargetSelect.cpp
index 32dcf9e22e..7f7931c4c8 100644
--- a/lib/ExecutionEngine/TargetSelect.cpp
+++ b/lib/ExecutionEngine/TargetSelect.cpp
@@ -31,6 +31,7 @@ TargetMachine *EngineBuilder::selectTarget(Module *Mod,
                               StringRef MCPU,
                               const SmallVectorImpl<std::string>& MAttrs,
                               Reloc::Model RM,
+                              CodeModel::Model CM,
                               std::string *ErrorStr) {
   Triple TheTriple(Mod->getTargetTriple());
   if (TheTriple.getTriple().empty())
@@ -85,7 +86,8 @@ TargetMachine *EngineBuilder::selectTarget(Module *Mod,
 
   // Allocate a target...
   TargetMachine *Target = TheTarget->createTargetMachine(TheTriple.getTriple(),
-                                                         MCPU, FeaturesStr, RM);
+                                                         MCPU, FeaturesStr,
+                                                         RM, CM);
   assert(Target && "Could not allocate target machine!");
   return Target;
 }
diff --git a/lib/MC/MCCodeGenInfo.cpp b/lib/MC/MCCodeGenInfo.cpp
index 553cd9710d..236e7de68a 100644
--- a/lib/MC/MCCodeGenInfo.cpp
+++ b/lib/MC/MCCodeGenInfo.cpp
@@ -15,6 +15,7 @@
 #include "llvm/MC/MCCodeGenInfo.h"
 using namespace llvm;
 
-void MCCodeGenInfo::InitMCCodeGenInfo(Reloc::Model RM) {
+void MCCodeGenInfo::InitMCCodeGenInfo(Reloc::Model RM, CodeModel::Model CM) {
   RelocationModel = RM;
+  CMModel = CM;
 }
diff --git a/lib/Target/ARM/ARMTargetMachine.cpp b/lib/Target/ARM/ARMTargetMachine.cpp
index 92f2f5bf40..3758b0ddf0 100644
--- a/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/lib/Target/ARM/ARMTargetMachine.cpp
@@ -64,8 +64,8 @@ extern "C" void LLVMInitializeARMTarget() {
 ///
 ARMBaseTargetMachine::ARMBaseTargetMachine(const Target &T, StringRef TT,
                                            StringRef CPU, StringRef FS,
-                                           Reloc::Model RM)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                           Reloc::Model RM, CodeModel::Model CM)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     Subtarget(TT, CPU, FS),
     JITInfo(),
     InstrItins(Subtarget.getInstrItineraryData()) {
@@ -76,8 +76,8 @@ ARMBaseTargetMachine::ARMBaseTargetMachine(const Target &T, StringRef TT,
 
 ARMTargetMachine::ARMTargetMachine(const Target &T, StringRef TT,
                                    StringRef CPU, StringRef FS,
-                                   Reloc::Model RM)
-  : ARMBaseTargetMachine(T, TT, CPU, FS, RM), InstrInfo(Subtarget),
+                                   Reloc::Model RM, CodeModel::Model CM)
+  : ARMBaseTargetMachine(T, TT, CPU, FS, RM, CM), InstrInfo(Subtarget),
     DataLayout(Subtarget.isAPCS_ABI() ?
                std::string("e-p:32:32-f64:32:64-i64:32:64-"
                            "v128:32:128-v64:32:64-n32") :
@@ -94,8 +94,8 @@ ARMTargetMachine::ARMTargetMachine(const Target &T, StringRef TT,
 
 ThumbTargetMachine::ThumbTargetMachine(const Target &T, StringRef TT,
                                        StringRef CPU, StringRef FS,
-                                       Reloc::Model RM)
-  : ARMBaseTargetMachine(T, TT, CPU, FS, RM),
+                                       Reloc::Model RM, CodeModel::Model CM)
+  : ARMBaseTargetMachine(T, TT, CPU, FS, RM, CM),
     InstrInfo(Subtarget.hasThumb2()
               ? ((ARMBaseInstrInfo*)new Thumb2InstrInfo(Subtarget))
               : ((ARMBaseInstrInfo*)new Thumb1InstrInfo(Subtarget))),
diff --git a/lib/Target/ARM/ARMTargetMachine.h b/lib/Target/ARM/ARMTargetMachine.h
index 616ea9c3d2..c8c601c301 100644
--- a/lib/Target/ARM/ARMTargetMachine.h
+++ b/lib/Target/ARM/ARMTargetMachine.h
@@ -40,7 +40,8 @@ private:
 
 public:
   ARMBaseTargetMachine(const Target &T, StringRef TT,
-                       StringRef CPU, StringRef FS, Reloc::Model RM);
+                       StringRef CPU, StringRef FS,
+                       Reloc::Model RM, CodeModel::Model CM);
 
   virtual       ARMJITInfo       *getJITInfo()         { return &JITInfo; }
   virtual const ARMSubtarget  *getSubtargetImpl() const { return &Subtarget; }
@@ -69,7 +70,8 @@ class ARMTargetMachine : public ARMBaseTargetMachine {
   ARMFrameLowering    FrameLowering;
  public:
   ARMTargetMachine(const Target &T, StringRef TT,
-                   StringRef CPU, StringRef FS, Reloc::Model RM);
+                   StringRef CPU, StringRef FS,
+                   Reloc::Model RM, CodeModel::Model CM);
 
   virtual const ARMRegisterInfo  *getRegisterInfo() const {
     return &InstrInfo.getRegisterInfo();
@@ -108,7 +110,8 @@ class ThumbTargetMachine : public ARMBaseTargetMachine {
   OwningPtr<ARMFrameLowering> FrameLowering;
 public:
   ThumbTargetMachine(const Target &T, StringRef TT,
-                     StringRef CPU, StringRef FS, Reloc::Model RM);
+                     StringRef CPU, StringRef FS,
+                     Reloc::Model RM, CodeModel::Model CM);
 
   /// returns either Thumb1RegisterInfo or Thumb2RegisterInfo
   virtual const ARMBaseRegisterInfo *getRegisterInfo() const {
diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
index 09bcf0231e..e64902ccfd 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -143,11 +143,12 @@ extern "C" void LLVMInitializeARMMCAsmInfo() {
   RegisterMCAsmInfoFn B(TheThumbTarget, createARMMCAsmInfo);
 }
 
-MCCodeGenInfo *createARMMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createARMMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                      CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
   if (RM == Reloc::Default)
     RM = Reloc::DynamicNoPIC;
-  X->InitMCCodeGenInfo(RM);
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/Alpha/AlphaTargetMachine.cpp b/lib/Target/Alpha/AlphaTargetMachine.cpp
index 4cdd3ab483..df7194a561 100644
--- a/lib/Target/Alpha/AlphaTargetMachine.cpp
+++ b/lib/Target/Alpha/AlphaTargetMachine.cpp
@@ -23,9 +23,9 @@ extern "C" void LLVMInitializeAlphaTarget() {
 }
 
 AlphaTargetMachine::AlphaTargetMachine(const Target &T, StringRef TT,
-                                       StringRef CPU,
-                                       StringRef FS, Reloc::Model RM)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                       StringRef CPU, StringRef FS,
+                                       Reloc::Model RM, CodeModel::Model CM)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     DataLayout("e-f128:128:128-n64"),
     FrameLowering(Subtarget),
     Subtarget(TT, CPU, FS),
diff --git a/lib/Target/Alpha/AlphaTargetMachine.h b/lib/Target/Alpha/AlphaTargetMachine.h
index 1d930d0a5c..48bb948a79 100644
--- a/lib/Target/Alpha/AlphaTargetMachine.h
+++ b/lib/Target/Alpha/AlphaTargetMachine.h
@@ -37,7 +37,8 @@ class AlphaTargetMachine : public LLVMTargetMachine {
 
 public:
   AlphaTargetMachine(const Target &T, StringRef TT,
-                     StringRef CPU, StringRef FS, Reloc::Model RM);
+                     StringRef CPU, StringRef FS,
+                     Reloc::Model RM, CodeModel::Model CM);
 
   virtual const AlphaInstrInfo *getInstrInfo() const { return &InstrInfo; }
   virtual const TargetFrameLowering  *getFrameLowering() const {
diff --git a/lib/Target/Alpha/MCTargetDesc/AlphaMCTargetDesc.cpp b/lib/Target/Alpha/MCTargetDesc/AlphaMCTargetDesc.cpp
index 04bc434862..517ab18283 100644
--- a/lib/Target/Alpha/MCTargetDesc/AlphaMCTargetDesc.cpp
+++ b/lib/Target/Alpha/MCTargetDesc/AlphaMCTargetDesc.cpp
@@ -66,9 +66,10 @@ extern "C" void LLVMInitializeAlphaMCAsmInfo() {
   RegisterMCAsmInfo<AlphaMCAsmInfo> X(TheAlphaTarget);
 }
 
-MCCodeGenInfo *createAlphaMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createAlphaMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                        CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
-  X->InitMCCodeGenInfo(Reloc::PIC_);
+  X->InitMCCodeGenInfo(Reloc::PIC_, CM);
   return X;
 }
 
diff --git a/lib/Target/Blackfin/BlackfinTargetMachine.cpp b/lib/Target/Blackfin/BlackfinTargetMachine.cpp
index 0a474cdb68..add1c17ccb 100644
--- a/lib/Target/Blackfin/BlackfinTargetMachine.cpp
+++ b/lib/Target/Blackfin/BlackfinTargetMachine.cpp
@@ -24,8 +24,10 @@ extern "C" void LLVMInitializeBlackfinTarget() {
 BlackfinTargetMachine::BlackfinTargetMachine(const Target &T,
                                              StringRef TT,
                                              StringRef CPU,
-                                             StringRef FS, Reloc::Model RM)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                             StringRef FS,
+                                             Reloc::Model RM,
+                                             CodeModel::Model CM)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     DataLayout("e-p:32:32-i64:32-f64:32-n32"),
     Subtarget(TT, CPU, FS),
     TLInfo(*this),
diff --git a/lib/Target/Blackfin/BlackfinTargetMachine.h b/lib/Target/Blackfin/BlackfinTargetMachine.h
index afe3919257..c85337fe23 100644
--- a/lib/Target/Blackfin/BlackfinTargetMachine.h
+++ b/lib/Target/Blackfin/BlackfinTargetMachine.h
@@ -36,7 +36,8 @@ namespace llvm {
     BlackfinIntrinsicInfo IntrinsicInfo;
   public:
     BlackfinTargetMachine(const Target &T, StringRef TT,
-                          StringRef CPU, StringRef FS, Reloc::Model RM);
+                          StringRef CPU, StringRef FS,
+                          Reloc::Model RM, CodeModel::Model CM);
 
     virtual const BlackfinInstrInfo *getInstrInfo() const { return &InstrInfo; }
     virtual const TargetFrameLowering *getFrameLowering() const {
diff --git a/lib/Target/Blackfin/MCTargetDesc/BlackfinMCTargetDesc.cpp b/lib/Target/Blackfin/MCTargetDesc/BlackfinMCTargetDesc.cpp
index b4e89c1bbd..5b69a0f1ba 100644
--- a/lib/Target/Blackfin/MCTargetDesc/BlackfinMCTargetDesc.cpp
+++ b/lib/Target/Blackfin/MCTargetDesc/BlackfinMCTargetDesc.cpp
@@ -69,9 +69,10 @@ extern "C" void LLVMInitializeBlackfinMCAsmInfo() {
   RegisterMCAsmInfo<BlackfinMCAsmInfo> X(TheBlackfinTarget);
 }
 
-MCCodeGenInfo *createBlackfinMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createBlackfinMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                           CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
-  X->InitMCCodeGenInfo(RM);
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/CBackend/CTargetMachine.h b/lib/Target/CBackend/CTargetMachine.h
index e0af30de9a..4f1ca974de 100644
--- a/lib/Target/CBackend/CTargetMachine.h
+++ b/lib/Target/CBackend/CTargetMachine.h
@@ -21,7 +21,8 @@ namespace llvm {
 
 struct CTargetMachine : public TargetMachine {
   CTargetMachine(const Target &T, StringRef TT,
-                 StringRef CPU, StringRef FS, Reloc::Model RM)
+                 StringRef CPU, StringRef FS,
+                 Reloc::Model RM, CodeModel::Model CM)
     : TargetMachine(T, TT, CPU, FS) {}
 
   virtual bool addPassesToEmitFile(PassManagerBase &PM,
diff --git a/lib/Target/CellSPU/MCTargetDesc/SPUMCTargetDesc.cpp b/lib/Target/CellSPU/MCTargetDesc/SPUMCTargetDesc.cpp
index a951f28219..1e09276d9e 100644
--- a/lib/Target/CellSPU/MCTargetDesc/SPUMCTargetDesc.cpp
+++ b/lib/Target/CellSPU/MCTargetDesc/SPUMCTargetDesc.cpp
@@ -78,11 +78,12 @@ extern "C" void LLVMInitializeCellSPUMCAsmInfo() {
   RegisterMCAsmInfoFn X(TheCellSPUTarget, createSPUMCAsmInfo);
 }
 
-MCCodeGenInfo *createSPUMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createSPUMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                      CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
   // For the time being, use static relocations, since there's really no
   // support for PIC yet.
-  X->InitMCCodeGenInfo(Reloc::Static);
+  X->InitMCCodeGenInfo(Reloc::Static, CM);
   return X;
 }
 
diff --git a/lib/Target/CellSPU/SPUTargetMachine.cpp b/lib/Target/CellSPU/SPUTargetMachine.cpp
index 8eabe9209d..ea59a80e87 100644
--- a/lib/Target/CellSPU/SPUTargetMachine.cpp
+++ b/lib/Target/CellSPU/SPUTargetMachine.cpp
@@ -32,8 +32,9 @@ SPUFrameLowering::getCalleeSaveSpillSlots(unsigned &NumEntries) const {
 }
 
 SPUTargetMachine::SPUTargetMachine(const Target &T, StringRef TT,
-                                   StringRef CPU,StringRef FS, Reloc::Model RM)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                   StringRef CPU, StringRef FS,
+                                   Reloc::Model RM, CodeModel::Model CM)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     Subtarget(TT, CPU, FS),
     DataLayout(Subtarget.getTargetDataString()),
     InstrInfo(*this),
diff --git a/lib/Target/CellSPU/SPUTargetMachine.h b/lib/Target/CellSPU/SPUTargetMachine.h
index b48a517f82..fffe77cabb 100644
--- a/lib/Target/CellSPU/SPUTargetMachine.h
+++ b/lib/Target/CellSPU/SPUTargetMachine.h
@@ -39,7 +39,8 @@ class SPUTargetMachine : public LLVMTargetMachine {
   InstrItineraryData  InstrItins;
 public:
   SPUTargetMachine(const Target &T, StringRef TT,
-                   StringRef CPU, StringRef FS, Reloc::Model RM);
+                   StringRef CPU, StringRef FS,
+                   Reloc::Model RM, CodeModel::Model CM);
 
   /// Return the subtarget implementation object
   virtual const SPUSubtarget     *getSubtargetImpl() const {
diff --git a/lib/Target/CppBackend/CPPTargetMachine.h b/lib/Target/CppBackend/CPPTargetMachine.h
index 56f479502d..287e537271 100644
--- a/lib/Target/CppBackend/CPPTargetMachine.h
+++ b/lib/Target/CppBackend/CPPTargetMachine.h
@@ -23,7 +23,8 @@ class formatted_raw_ostream;
 
 struct CPPTargetMachine : public TargetMachine {
   CPPTargetMachine(const Target &T, StringRef TT,
-                   StringRef CPU, StringRef FS, Reloc::Model RM)
+                   StringRef CPU, StringRef FS,
+                   Reloc::Model RM, CodeModel::Model CM)
     : TargetMachine(T, TT, CPU, FS) {}
 
   virtual bool addPassesToEmitFile(PassManagerBase &PM,
diff --git a/lib/Target/MBlaze/MBlazeTargetMachine.cpp b/lib/Target/MBlaze/MBlazeTargetMachine.cpp
index 945c847ae9..0f609d0fde 100644
--- a/lib/Target/MBlaze/MBlazeTargetMachine.cpp
+++ b/lib/Target/MBlaze/MBlazeTargetMachine.cpp
@@ -68,16 +68,15 @@ extern "C" void LLVMInitializeMBlazeTarget() {
 // an easier handling.
 MBlazeTargetMachine::
 MBlazeTargetMachine(const Target &T, StringRef TT,
-                    StringRef CPU, StringRef FS, Reloc::Model RM):
-  LLVMTargetMachine(T, TT, CPU, FS, RM),
+                    StringRef CPU, StringRef FS,
+                    Reloc::Model RM, CodeModel::Model CM):
+  LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
   Subtarget(TT, CPU, FS),
   DataLayout("E-p:32:32:32-i8:8:8-i16:16:16"),
   InstrInfo(*this),
   FrameLowering(Subtarget),
   TLInfo(*this), TSInfo(*this), ELFWriterInfo(*this),
   InstrItins(Subtarget.getInstrItineraryData()) {
-  if (getCodeModel() == CodeModel::Default)
-    setCodeModel(CodeModel::Small);
 }
 
 // Install an instruction selector pass using
diff --git a/lib/Target/MBlaze/MBlazeTargetMachine.h b/lib/Target/MBlaze/MBlazeTargetMachine.h
index 6f32d1439a..c1bc08aeb5 100644
--- a/lib/Target/MBlaze/MBlazeTargetMachine.h
+++ b/lib/Target/MBlaze/MBlazeTargetMachine.h
@@ -42,7 +42,8 @@ namespace llvm {
 
   public:
     MBlazeTargetMachine(const Target &T, StringRef TT,
-                        StringRef CPU, StringRef FS, Reloc::Model RM);
+                        StringRef CPU, StringRef FS,
+                        Reloc::Model RM, CodeModel::Model CM);
 
     virtual const MBlazeInstrInfo *getInstrInfo() const
     { return &InstrInfo; }
diff --git a/lib/Target/MBlaze/MCTargetDesc/MBlazeMCTargetDesc.cpp b/lib/Target/MBlaze/MCTargetDesc/MBlazeMCTargetDesc.cpp
index 22ce1cb8b6..aa4399b839 100644
--- a/lib/Target/MBlaze/MCTargetDesc/MBlazeMCTargetDesc.cpp
+++ b/lib/Target/MBlaze/MCTargetDesc/MBlazeMCTargetDesc.cpp
@@ -75,11 +75,14 @@ extern "C" void LLVMInitializeMBlazeMCAsmInfo() {
   RegisterMCAsmInfoFn X(TheMBlazeTarget, createMCAsmInfo);
 }
 
-MCCodeGenInfo *createMBlazeMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createMBlazeMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                         CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
   if (RM == Reloc::Default)
-      RM = Reloc::Static;
-  X->InitMCCodeGenInfo(RM);
+    RM = Reloc::Static;
+  if (CM == CodeModel::Default)
+    CM = CodeModel::Small;
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/MSP430/MCTargetDesc/MSP430MCTargetDesc.cpp b/lib/Target/MSP430/MCTargetDesc/MSP430MCTargetDesc.cpp
index 6aa62206ef..60b80c3607 100644
--- a/lib/Target/MSP430/MCTargetDesc/MSP430MCTargetDesc.cpp
+++ b/lib/Target/MSP430/MCTargetDesc/MSP430MCTargetDesc.cpp
@@ -67,9 +67,10 @@ extern "C" void LLVMInitializeMSP430MCAsmInfo() {
   RegisterMCAsmInfo<MSP430MCAsmInfo> X(TheMSP430Target);
 }
 
-MCCodeGenInfo *createMSP430MCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createMSP430MCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                         CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
-  X->InitMCCodeGenInfo(RM);
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/MSP430/MSP430TargetMachine.cpp b/lib/Target/MSP430/MSP430TargetMachine.cpp
index 85ca533005..12a624abd1 100644
--- a/lib/Target/MSP430/MSP430TargetMachine.cpp
+++ b/lib/Target/MSP430/MSP430TargetMachine.cpp
@@ -27,8 +27,9 @@ extern "C" void LLVMInitializeMSP430Target() {
 MSP430TargetMachine::MSP430TargetMachine(const Target &T,
                                          StringRef TT,
                                          StringRef CPU,
-                                         StringRef FS, Reloc::Model RM)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                         StringRef FS,
+                                         Reloc::Model RM, CodeModel::Model CM)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     Subtarget(TT, CPU, FS),
     // FIXME: Check TargetData string.
     DataLayout("e-p:16:16:16-i8:8:8-i16:16:16-i32:16:32-n8:16"),
diff --git a/lib/Target/MSP430/MSP430TargetMachine.h b/lib/Target/MSP430/MSP430TargetMachine.h
index 384176c1ed..eb483dc870 100644
--- a/lib/Target/MSP430/MSP430TargetMachine.h
+++ b/lib/Target/MSP430/MSP430TargetMachine.h
@@ -39,7 +39,8 @@ class MSP430TargetMachine : public LLVMTargetMachine {
 
 public:
   MSP430TargetMachine(const Target &T, StringRef TT,
-                      StringRef CPU, StringRef FS, Reloc::Model RM);
+                      StringRef CPU, StringRef FS,
+                      Reloc::Model RM, CodeModel::Model CM);
 
   virtual const TargetFrameLowering *getFrameLowering() const {
     return &FrameLowering;
diff --git a/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp b/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
index b83a69d06a..a4d6dcfc88 100644
--- a/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
@@ -78,7 +78,8 @@ extern "C" void LLVMInitializeMipsMCAsmInfo() {
   RegisterMCAsmInfoFn Y(TheMipselTarget, createMipsMCAsmInfo);
 }
 
-MCCodeGenInfo *createMipsMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createMipsMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                       CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
   if (RM == Reloc::Default) {
     // Abicall enables PIC by default
@@ -88,7 +89,7 @@ MCCodeGenInfo *createMipsMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
     else
       RM = Reloc::PIC_;
   }
-  X->InitMCCodeGenInfo(RM);
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/Mips/MipsTargetMachine.cpp b/lib/Target/Mips/MipsTargetMachine.cpp
index a195a48961..703d9e7002 100644
--- a/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/lib/Target/Mips/MipsTargetMachine.cpp
@@ -32,9 +32,10 @@ extern "C" void LLVMInitializeMipsTarget() {
 // Using CodeModel::Large enables different CALL behavior.
 MipsTargetMachine::
 MipsTargetMachine(const Target &T, StringRef TT,
-                  StringRef CPU, StringRef FS, Reloc::Model RM,
+                  StringRef CPU, StringRef FS,
+                  Reloc::Model RM, CodeModel::Model CM,
                   bool isLittle=false):
-  LLVMTargetMachine(T, TT, CPU, FS, RM),
+  LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
   Subtarget(TT, CPU, FS, isLittle),
   DataLayout(isLittle ? 
              std::string("e-p:32:32:32-i8:8:32-i16:16:32-i64:64:64-n32") :
@@ -46,8 +47,9 @@ MipsTargetMachine(const Target &T, StringRef TT,
 
 MipselTargetMachine::
 MipselTargetMachine(const Target &T, StringRef TT,
-                    StringRef CPU, StringRef FS, Reloc::Model RM) :
-  MipsTargetMachine(T, TT, CPU, FS, RM, true) {}
+                    StringRef CPU, StringRef FS,
+                    Reloc::Model RM, CodeModel::Model CM) :
+  MipsTargetMachine(T, TT, CPU, FS, RM, CM, true) {}
 
 // Install an instruction selector pass using
 // the ISelDag to gen Mips code.
diff --git a/lib/Target/Mips/MipsTargetMachine.h b/lib/Target/Mips/MipsTargetMachine.h
index c1671e69bb..421405649a 100644
--- a/lib/Target/Mips/MipsTargetMachine.h
+++ b/lib/Target/Mips/MipsTargetMachine.h
@@ -36,7 +36,8 @@ namespace llvm {
   public:
     MipsTargetMachine(const Target &T, StringRef TT,
                       StringRef CPU, StringRef FS,
-                      Reloc::Model RM, bool isLittle);
+                      Reloc::Model RM, CodeModel::Model CM,
+                      bool isLittle);
 
     virtual const MipsInstrInfo   *getInstrInfo()     const
     { return &InstrInfo; }
@@ -74,7 +75,8 @@ namespace llvm {
 class MipselTargetMachine : public MipsTargetMachine {
 public:
   MipselTargetMachine(const Target &T, StringRef TT,
-                      StringRef CPU, StringRef FS, Reloc::Model RM);
+                      StringRef CPU, StringRef FS,
+                      Reloc::Model RM, CodeModel::Model CM);
 };
 
 } // End llvm namespace
diff --git a/lib/Target/PTX/MCTargetDesc/PTXMCTargetDesc.cpp b/lib/Target/PTX/MCTargetDesc/PTXMCTargetDesc.cpp
index 19d0c6dfa4..84f472f74e 100644
--- a/lib/Target/PTX/MCTargetDesc/PTXMCTargetDesc.cpp
+++ b/lib/Target/PTX/MCTargetDesc/PTXMCTargetDesc.cpp
@@ -71,9 +71,10 @@ extern "C" void LLVMInitializePTXMCAsmInfo() {
   RegisterMCAsmInfo<PTXMCAsmInfo> Y(ThePTX64Target);
 }
 
-MCCodeGenInfo *createPTXMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createPTXMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                      CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
-  X->InitMCCodeGenInfo(RM);
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/PTX/PTXTargetMachine.cpp b/lib/Target/PTX/PTXTargetMachine.cpp
index 2d73599e8d..ff9776a7f1 100644
--- a/lib/Target/PTX/PTXTargetMachine.cpp
+++ b/lib/Target/PTX/PTXTargetMachine.cpp
@@ -47,11 +47,10 @@ namespace {
 
 // DataLayout and FrameLowering are filled with dummy data
 PTXTargetMachine::PTXTargetMachine(const Target &T,
-                                   StringRef TT,
-                                   StringRef CPU,
-                                   StringRef FS,
-                                   Reloc::Model RM, bool is64Bit)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                   StringRef TT, StringRef CPU, StringRef FS,
+                                   Reloc::Model RM, CodeModel::Model CM,
+                                   bool is64Bit)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     DataLayout(is64Bit ? DataLayout64 : DataLayout32),
     Subtarget(TT, CPU, FS, is64Bit),
     FrameLowering(Subtarget),
@@ -61,14 +60,14 @@ PTXTargetMachine::PTXTargetMachine(const Target &T,
 
 PTX32TargetMachine::PTX32TargetMachine(const Target &T, StringRef TT,
                                        StringRef CPU, StringRef FS,
-                                       Reloc::Model RM)
-  : PTXTargetMachine(T, TT, CPU, FS, RM, false) {
+                                       Reloc::Model RM, CodeModel::Model CM)
+  : PTXTargetMachine(T, TT, CPU, FS, RM, CM, false) {
 }
 
 PTX64TargetMachine::PTX64TargetMachine(const Target &T, StringRef TT,
                                        StringRef CPU, StringRef FS,
-                                       Reloc::Model RM)
-  : PTXTargetMachine(T, TT, CPU, FS, RM, true) {
+                                       Reloc::Model RM, CodeModel::Model CM)
+  : PTXTargetMachine(T, TT, CPU, FS, RM, CM, true) {
 }
 
 bool PTXTargetMachine::addInstSelector(PassManagerBase &PM,
diff --git a/lib/Target/PTX/PTXTargetMachine.h b/lib/Target/PTX/PTXTargetMachine.h
index 880e8d4add..3cf081fc4e 100644
--- a/lib/Target/PTX/PTXTargetMachine.h
+++ b/lib/Target/PTX/PTXTargetMachine.h
@@ -33,7 +33,8 @@ class PTXTargetMachine : public LLVMTargetMachine {
 
   public:
     PTXTargetMachine(const Target &T, StringRef TT,
-                     StringRef CPU, StringRef FS, Reloc::Model RM,
+                     StringRef CPU, StringRef FS,
+                     Reloc::Model RM, CodeModel::Model CM,
                      bool is64Bit);
 
     virtual const TargetData *getTargetData() const { return &DataLayout; }
@@ -62,14 +63,16 @@ class PTX32TargetMachine : public PTXTargetMachine {
 public:
 
   PTX32TargetMachine(const Target &T, StringRef TT,
-                     StringRef CPU, StringRef FS, Reloc::Model RM);
+                     StringRef CPU, StringRef FS,
+                     Reloc::Model RM, CodeModel::Model CM);
 }; // class PTX32TargetMachine
 
 class PTX64TargetMachine : public PTXTargetMachine {
 public:
 
   PTX64TargetMachine(const Target &T, StringRef TT,
-                     StringRef CPU, StringRef FS, Reloc::Model RM);
+                     StringRef CPU, StringRef FS,
+                     Reloc::Model RM, CodeModel::Model CM);
 }; // class PTX32TargetMachine
 
 } // namespace llvm
diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp b/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
index 484bb1af0c..c49fe3f788 100644
--- a/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
+++ b/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
@@ -94,7 +94,8 @@ extern "C" void LLVMInitializePowerPCMCAsmInfo() {
   RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo);  
 }
 
-MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                      CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
 
   if (RM == Reloc::Default) {
@@ -104,7 +105,7 @@ MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
     else
       RM = Reloc::Static;
   }
-  X->InitMCCodeGenInfo(RM);
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/PowerPC/PPCTargetMachine.cpp b/lib/Target/PowerPC/PPCTargetMachine.cpp
index 2046673352..671c74bb3d 100644
--- a/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -54,8 +54,9 @@ extern "C" void LLVMInitializePowerPCTarget() {
 
 PPCTargetMachine::PPCTargetMachine(const Target &T, StringRef TT,
                                    StringRef CPU, StringRef FS,
-                                   Reloc::Model RM, bool is64Bit)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                   Reloc::Model RM, CodeModel::Model CM,
+                                   bool is64Bit)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     Subtarget(TT, CPU, FS, is64Bit),
     DataLayout(Subtarget.getTargetDataString()), InstrInfo(*this),
     FrameLowering(Subtarget), JITInfo(*this, is64Bit),
@@ -68,16 +69,16 @@ PPCTargetMachine::PPCTargetMachine(const Target &T, StringRef TT,
 bool PPCTargetMachine::getEnableTailMergeDefault() const { return false; }
 
 PPC32TargetMachine::PPC32TargetMachine(const Target &T, StringRef TT, 
-                                       StringRef CPU,
-                                       StringRef FS, Reloc::Model RM) 
-  : PPCTargetMachine(T, TT, CPU, FS, RM, false) {
+                                       StringRef CPU, StringRef FS,
+                                       Reloc::Model RM, CodeModel::Model CM) 
+  : PPCTargetMachine(T, TT, CPU, FS, RM, CM, false) {
 }
 
 
 PPC64TargetMachine::PPC64TargetMachine(const Target &T, StringRef TT, 
-                                       StringRef CPU, 
-                                       StringRef FS, Reloc::Model RM)
-  : PPCTargetMachine(T, TT, CPU, FS, RM, true) {
+                                       StringRef CPU,  StringRef FS,
+                                       Reloc::Model RM, CodeModel::Model CM)
+  : PPCTargetMachine(T, TT, CPU, FS, RM, CM, true) {
 }
 
 
diff --git a/lib/Target/PowerPC/PPCTargetMachine.h b/lib/Target/PowerPC/PPCTargetMachine.h
index bdec0861cf..d06f0843bd 100644
--- a/lib/Target/PowerPC/PPCTargetMachine.h
+++ b/lib/Target/PowerPC/PPCTargetMachine.h
@@ -42,7 +42,7 @@ class PPCTargetMachine : public LLVMTargetMachine {
 public:
   PPCTargetMachine(const Target &T, StringRef TT,
                    StringRef CPU, StringRef FS,
-                   Reloc::Model RM, bool is64Bit);
+                   Reloc::Model RM, CodeModel::Model CM, bool is64Bit);
 
   virtual const PPCInstrInfo      *getInstrInfo() const { return &InstrInfo; }
   virtual const PPCFrameLowering  *getFrameLowering() const {
@@ -78,7 +78,8 @@ public:
 class PPC32TargetMachine : public PPCTargetMachine {
 public:
   PPC32TargetMachine(const Target &T, StringRef TT,
-                     StringRef CPU, StringRef FS, Reloc::Model RM);
+                     StringRef CPU, StringRef FS,
+                     Reloc::Model RM, CodeModel::Model CM);
 };
 
 /// PPC64TargetMachine - PowerPC 64-bit target machine.
@@ -86,7 +87,8 @@ public:
 class PPC64TargetMachine : public PPCTargetMachine {
 public:
   PPC64TargetMachine(const Target &T, StringRef TT,
-                     StringRef CPU, StringRef FS, Reloc::Model RM);
+                     StringRef CPU, StringRef FS,
+                     Reloc::Model RM, CodeModel::Model CM);
 };
 
 } // end namespace llvm
diff --git a/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp b/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp
index 76a5873350..28046bf5bc 100644
--- a/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp
+++ b/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp
@@ -66,9 +66,10 @@ extern "C" void LLVMInitializeSparcMCAsmInfo() {
   RegisterMCAsmInfo<SparcELFMCAsmInfo> Y(TheSparcV9Target);
 }
 
-MCCodeGenInfo *createSparcMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createSparcMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                        CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
-  X->InitMCCodeGenInfo(RM);
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/Sparc/SparcTargetMachine.cpp b/lib/Target/Sparc/SparcTargetMachine.cpp
index 218c4bc9bc..c6b4e44d38 100644
--- a/lib/Target/Sparc/SparcTargetMachine.cpp
+++ b/lib/Target/Sparc/SparcTargetMachine.cpp
@@ -26,8 +26,9 @@ extern "C" void LLVMInitializeSparcTarget() {
 ///
 SparcTargetMachine::SparcTargetMachine(const Target &T, StringRef TT, 
                                        StringRef CPU, StringRef FS,
-                                       Reloc::Model RM, bool is64bit)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                       Reloc::Model RM, CodeModel::Model CM,
+                                       bool is64bit)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     Subtarget(TT, CPU, FS, is64bit),
     DataLayout(Subtarget.getDataLayout()),
     TLInfo(*this), TSInfo(*this), InstrInfo(Subtarget),
@@ -51,15 +52,15 @@ bool SparcTargetMachine::addPreEmitPass(PassManagerBase &PM,
 }
 
 SparcV8TargetMachine::SparcV8TargetMachine(const Target &T,
-                                           StringRef TT, 
-                                           StringRef CPU,
-                                           StringRef FS, Reloc::Model RM)
-  : SparcTargetMachine(T, TT, CPU, FS, RM, false) {
+                                           StringRef TT, StringRef CPU,
+                                           StringRef FS, Reloc::Model RM,
+                                           CodeModel::Model CM)
+  : SparcTargetMachine(T, TT, CPU, FS, RM, CM, false) {
 }
 
 SparcV9TargetMachine::SparcV9TargetMachine(const Target &T, 
-                                           StringRef TT, 
-                                           StringRef CPU,
-                                           StringRef FS, Reloc::Model RM)
-  : SparcTargetMachine(T, TT, CPU, FS, RM, true) {
+                                           StringRef TT,  StringRef CPU,
+                                           StringRef FS, Reloc::Model RM,
+                                           CodeModel::Model CM)
+  : SparcTargetMachine(T, TT, CPU, FS, RM, CM, true) {
 }
diff --git a/lib/Target/Sparc/SparcTargetMachine.h b/lib/Target/Sparc/SparcTargetMachine.h
index 49d36bb066..3c907dd44d 100644
--- a/lib/Target/Sparc/SparcTargetMachine.h
+++ b/lib/Target/Sparc/SparcTargetMachine.h
@@ -35,7 +35,7 @@ class SparcTargetMachine : public LLVMTargetMachine {
 public:
   SparcTargetMachine(const Target &T, StringRef TT,
                      StringRef CPU, StringRef FS,
-                     Reloc::Model RM, bool is64bit);
+                     Reloc::Model RM, CodeModel::Model CM, bool is64bit);
 
   virtual const SparcInstrInfo *getInstrInfo() const { return &InstrInfo; }
   virtual const TargetFrameLowering  *getFrameLowering() const {
@@ -63,7 +63,8 @@ public:
 class SparcV8TargetMachine : public SparcTargetMachine {
 public:
   SparcV8TargetMachine(const Target &T, StringRef TT,
-                       StringRef CPU, StringRef FS, Reloc::Model RM);
+                       StringRef CPU, StringRef FS,
+                       Reloc::Model RM, CodeModel::Model CM);
 };
 
 /// SparcV9TargetMachine - Sparc 64-bit target machine
@@ -71,7 +72,8 @@ public:
 class SparcV9TargetMachine : public SparcTargetMachine {
 public:
   SparcV9TargetMachine(const Target &T, StringRef TT,
-                       StringRef CPU, StringRef FS, Reloc::Model RM);
+                       StringRef CPU, StringRef FS,
+                       Reloc::Model RM, CodeModel::Model CM);
 };
 
 } // end namespace llvm
diff --git a/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp b/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
index 79c41d889b..57c3917c5b 100644
--- a/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
+++ b/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
@@ -68,11 +68,12 @@ extern "C" void LLVMInitializeSystemZMCAsmInfo() {
   RegisterMCAsmInfo<SystemZMCAsmInfo> X(TheSystemZTarget);
 }
 
-MCCodeGenInfo *createSystemZMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createSystemZMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                          CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
   if (RM == Reloc::Default)
     RM = Reloc::Static;
-  X->InitMCCodeGenInfo(RM);
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/SystemZ/SystemZTargetMachine.cpp b/lib/Target/SystemZ/SystemZTargetMachine.cpp
index afa455ea25..ef17d6c502 100644
--- a/lib/Target/SystemZ/SystemZTargetMachine.cpp
+++ b/lib/Target/SystemZ/SystemZTargetMachine.cpp
@@ -21,10 +21,10 @@ extern "C" void LLVMInitializeSystemZTarget() {
 /// SystemZTargetMachine ctor - Create an ILP64 architecture model
 ///
 SystemZTargetMachine::SystemZTargetMachine(const Target &T,
-                                           StringRef TT,
-                                           StringRef CPU,
-                                           StringRef FS, Reloc::Model RM)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                           StringRef TT, StringRef CPU,
+                                           StringRef FS, Reloc::Model RM,
+                                           CodeModel::Model CM)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     Subtarget(TT, CPU, FS),
     DataLayout("E-p:64:64:64-i8:8:16-i16:16:16-i32:32:32-i64:64:64-f32:32:32"
                "-f64:64:64-f128:128:128-a0:16:16-n32:64"),
diff --git a/lib/Target/SystemZ/SystemZTargetMachine.h b/lib/Target/SystemZ/SystemZTargetMachine.h
index 9008b80e21..43dce4bd14 100644
--- a/lib/Target/SystemZ/SystemZTargetMachine.h
+++ b/lib/Target/SystemZ/SystemZTargetMachine.h
@@ -38,7 +38,8 @@ class SystemZTargetMachine : public LLVMTargetMachine {
   SystemZFrameLowering    FrameLowering;
 public:
   SystemZTargetMachine(const Target &T, StringRef TT,
-                       StringRef CPU, StringRef FS, Reloc::Model RM);
+                       StringRef CPU, StringRef FS,
+                       Reloc::Model RM, CodeModel::Model CM);
 
   virtual const TargetFrameLowering *getFrameLowering() const {
     return &FrameLowering;
diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index cdf739ddbd..f74c8c3ecb 100644
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -40,7 +40,6 @@ namespace llvm {
   bool JITExceptionHandling;
   bool JITEmitDebugInfo;
   bool JITEmitDebugInfoToDisk;
-  CodeModel::Model CMModel;
   bool GuaranteedTailCallOpt;
   unsigned StackAlignmentOverride;
   bool RealignStack;
@@ -142,23 +141,6 @@ EmitJitDebugInfoToDisk("jit-emit-debug-to-disk",
   cl::location(JITEmitDebugInfoToDisk),
   cl::init(false));
 
-static cl::opt<llvm::CodeModel::Model, true>
-DefCodeModel("code-model",
-  cl::desc("Choose code model"),
-  cl::location(CMModel),
-  cl::init(CodeModel::Default),
-  cl::values(
-    clEnumValN(CodeModel::Default, "default",
-               "Target default code model"),
-    clEnumValN(CodeModel::Small, "small",
-               "Small code model"),
-    clEnumValN(CodeModel::Kernel, "kernel",
-               "Kernel code model"),
-    clEnumValN(CodeModel::Medium, "medium",
-               "Medium code model"),
-    clEnumValN(CodeModel::Large, "large",
-               "Large code model"),
-    clEnumValEnd));
 static cl::opt<bool, true>
 EnableGuaranteedTailCallOpt("tailcallopt",
   cl::desc("Turn fastcc calls into tail calls by (potentially) changing ABI."),
@@ -230,13 +212,10 @@ Reloc::Model TargetMachine::getRelocationModel() const {
 
 /// getCodeModel - Returns the code model. The choices are small, kernel,
 /// medium, large, and target default.
-CodeModel::Model TargetMachine::getCodeModel() {
-  return CMModel;
-}
-
-/// setCodeModel - Sets the code model.
-void TargetMachine::setCodeModel(CodeModel::Model Model) {
-  CMModel = Model;
+CodeModel::Model TargetMachine::getCodeModel() const {
+  if (!CodeGenInfo)
+    return CodeModel::Default;
+  return CodeGenInfo->getCodeModel();
 }
 
 bool TargetMachine::getAsmVerbosityDefault() {
diff --git a/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp b/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
index 9e415a87f5..298de32dc1 100644
--- a/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
+++ b/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
@@ -339,7 +339,8 @@ extern "C" void LLVMInitializeX86MCAsmInfo() {
   RegisterMCAsmInfoFn B(TheX86_64Target, createX86MCAsmInfo);
 }
 
-MCCodeGenInfo *createX86MCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createX86MCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                      CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
 
   Triple T(TT);
@@ -376,7 +377,14 @@ MCCodeGenInfo *createX86MCCodeGenInfo(StringRef TT, Reloc::Model RM) {
   if (RM == Reloc::Static && T.isOSDarwin() && is64Bit)
     RM = Reloc::PIC_;
 
-  X->InitMCCodeGenInfo(RM);
+  // For static codegen, if we're not already set, use Small codegen.
+  if (CM == CodeModel::Default)
+    CM = CodeModel::Small;
+  else if (CM == CodeModel::JITDefault)
+    // 64-bit JIT places everything in the same buffer except external funcs.
+    CM = is64Bit ? CodeModel::Large : CodeModel::Small;
+
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 770dbbba1d..5b70f4b149 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -67,8 +67,8 @@ extern "C" void LLVMInitializeX86Target() {
 
 X86_32TargetMachine::X86_32TargetMachine(const Target &T, StringRef TT,
                                          StringRef CPU, StringRef FS,
-                                         Reloc::Model RM)
-  : X86TargetMachine(T, TT, CPU, FS, RM, false),
+                                         Reloc::Model RM, CodeModel::Model CM)
+  : X86TargetMachine(T, TT, CPU, FS, RM, CM, false),
     DataLayout(getSubtargetImpl()->isTargetDarwin() ?
                "e-p:32:32-f64:32:64-i64:32:64-f80:128:128-f128:128:128-n8:16:32" :
                (getSubtargetImpl()->isTargetCygMing() ||
@@ -84,8 +84,8 @@ X86_32TargetMachine::X86_32TargetMachine(const Target &T, StringRef TT,
 
 X86_64TargetMachine::X86_64TargetMachine(const Target &T, StringRef TT,
                                          StringRef CPU, StringRef FS,
-                                         Reloc::Model RM)
-  : X86TargetMachine(T, TT, CPU, FS, RM, true),
+                                         Reloc::Model RM, CodeModel::Model CM)
+  : X86TargetMachine(T, TT, CPU, FS, RM, CM, true),
     DataLayout("e-p:64:64-s:64-f64:64:64-i64:64:64-f80:128:128-f128:128:128-n8:16:32:64"),
     InstrInfo(*this),
     TSInfo(*this),
@@ -97,8 +97,9 @@ X86_64TargetMachine::X86_64TargetMachine(const Target &T, StringRef TT,
 ///
 X86TargetMachine::X86TargetMachine(const Target &T, StringRef TT,
                                    StringRef CPU, StringRef FS,
-                                   Reloc::Model RM, bool is64Bit)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                   Reloc::Model RM, CodeModel::Model CM,
+                                   bool is64Bit)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     Subtarget(TT, CPU, FS, StackAlignmentOverride, is64Bit),
     FrameLowering(*this, Subtarget),
     ELFWriterInfo(is64Bit, true) {
@@ -171,23 +172,3 @@ bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
 
   return false;
 }
-
-void X86TargetMachine::setCodeModelForStatic() {
-
-    if (getCodeModel() != CodeModel::Default) return;
-
-    // For static codegen, if we're not already set, use Small codegen.
-    setCodeModel(CodeModel::Small);
-}
-
-
-void X86TargetMachine::setCodeModelForJIT() {
-
-  if (getCodeModel() != CodeModel::Default) return;
-
-  // 64-bit JIT places everything in the same buffer except external functions.
-  if (Subtarget.is64Bit())
-    setCodeModel(CodeModel::Large);
-  else
-    setCodeModel(CodeModel::Small);
-}
diff --git a/lib/Target/X86/X86TargetMachine.h b/lib/Target/X86/X86TargetMachine.h
index c19efccd04..d1569aa9d7 100644
--- a/lib/Target/X86/X86TargetMachine.h
+++ b/lib/Target/X86/X86TargetMachine.h
@@ -36,15 +36,11 @@ class X86TargetMachine : public LLVMTargetMachine {
   X86FrameLowering  FrameLowering;
   X86ELFWriterInfo  ELFWriterInfo;
 
-private:
-  // We have specific defaults for X86.
-  virtual void setCodeModelForJIT();
-  virtual void setCodeModelForStatic();
-  
 public:
   X86TargetMachine(const Target &T, StringRef TT, 
                    StringRef CPU, StringRef FS,
-                   Reloc::Model RM, bool is64Bit);
+                   Reloc::Model RM, CodeModel::Model CM,
+                   bool is64Bit);
 
   virtual const X86InstrInfo     *getInstrInfo() const {
     llvm_unreachable("getInstrInfo not implemented");
@@ -88,7 +84,8 @@ class X86_32TargetMachine : public X86TargetMachine {
   X86JITInfo        JITInfo;
 public:
   X86_32TargetMachine(const Target &T, StringRef TT,
-                      StringRef CPU, StringRef FS, Reloc::Model RM);
+                      StringRef CPU, StringRef FS,
+                      Reloc::Model RM, CodeModel::Model CM);
   virtual const TargetData *getTargetData() const { return &DataLayout; }
   virtual const X86TargetLowering *getTargetLowering() const {
     return &TLInfo;
@@ -114,7 +111,8 @@ class X86_64TargetMachine : public X86TargetMachine {
   X86JITInfo        JITInfo;
 public:
   X86_64TargetMachine(const Target &T, StringRef TT,
-                      StringRef CPU, StringRef FS, Reloc::Model RM);
+                      StringRef CPU, StringRef FS,
+                      Reloc::Model RM, CodeModel::Model CM);
   virtual const TargetData *getTargetData() const { return &DataLayout; }
   virtual const X86TargetLowering *getTargetLowering() const {
     return &TLInfo;
diff --git a/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp b/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp
index f44e62cf79..f669d10c31 100644
--- a/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp
+++ b/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp
@@ -76,9 +76,10 @@ extern "C" void LLVMInitializeXCoreMCAsmInfo() {
   RegisterMCAsmInfoFn X(TheXCoreTarget, createXCoreMCAsmInfo);
 }
 
-MCCodeGenInfo *createXCoreMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
+MCCodeGenInfo *createXCoreMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                        CodeModel::Model CM) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
-  X->InitMCCodeGenInfo(RM);
+  X->InitMCCodeGenInfo(RM, CM);
   return X;
 }
 
diff --git a/lib/Target/XCore/XCoreTargetMachine.cpp b/lib/Target/XCore/XCoreTargetMachine.cpp
index 0c0267dd69..08f39c3e6f 100644
--- a/lib/Target/XCore/XCoreTargetMachine.cpp
+++ b/lib/Target/XCore/XCoreTargetMachine.cpp
@@ -20,9 +20,9 @@ using namespace llvm;
 /// XCoreTargetMachine ctor - Create an ILP32 architecture model
 ///
 XCoreTargetMachine::XCoreTargetMachine(const Target &T, StringRef TT,
-                                       StringRef CPU,
-                                       StringRef FS, Reloc::Model RM)
-  : LLVMTargetMachine(T, TT, CPU, FS, RM),
+                                       StringRef CPU, StringRef FS,
+                                       Reloc::Model RM, CodeModel::Model CM)
+  : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
     Subtarget(TT, CPU, FS),
     DataLayout("e-p:32:32:32-a0:0:32-f32:32:32-f64:32:32-i1:8:32-i8:8:32-"
                "i16:16:32-i32:32:32-i64:32:32-n32"),
diff --git a/lib/Target/XCore/XCoreTargetMachine.h b/lib/Target/XCore/XCoreTargetMachine.h
index f782e173d4..83d09d6df4 100644
--- a/lib/Target/XCore/XCoreTargetMachine.h
+++ b/lib/Target/XCore/XCoreTargetMachine.h
@@ -33,7 +33,8 @@ class XCoreTargetMachine : public LLVMTargetMachine {
   XCoreSelectionDAGInfo TSInfo;
 public:
   XCoreTargetMachine(const Target &T, StringRef TT,
-                     StringRef CPU, StringRef FS, Reloc::Model RM);
+                     StringRef CPU, StringRef FS,
+                     Reloc::Model RM, CodeModel::Model CM);
 
   virtual const XCoreInstrInfo *getInstrInfo() const { return &InstrInfo; }
   virtual const XCoreFrameLowering *getFrameLowering() const {