Update LLVM for rebase to r212749.

Includes a cherry-pick of:
r212948 - fixes a small issue with atomic calls

Change-Id: Ib97bd980b59f18142a69506400911a6009d9df18

13 files changed, 70 insertions, 84 deletions

diff --git a/lib/Target/MSP430/MSP430FrameLowering.h b/lib/Target/MSP430/MSP430FrameLowering.h
index d464dd9..fadfeed 100644
--- a/lib/Target/MSP430/MSP430FrameLowering.h
+++ b/lib/Target/MSP430/MSP430FrameLowering.h
@@ -15,20 +15,15 @@
 #define MSP430_FRAMEINFO_H
 
 #include "MSP430.h"
-#include "MSP430Subtarget.h"
 #include "llvm/Target/TargetFrameLowering.h"
 
 namespace llvm {
-  class MSP430Subtarget;
-
 class MSP430FrameLowering : public TargetFrameLowering {
 protected:
-  const MSP430Subtarget &STI;
 
 public:
-  explicit MSP430FrameLowering(const MSP430Subtarget &sti)
-    : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 2, -2, 2),
-      STI(sti) {}
+  explicit MSP430FrameLowering()
+      : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 2, -2, 2) {}
 
   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
   /// the function.
diff --git a/lib/Target/MSP430/MSP430ISelLowering.cpp b/lib/Target/MSP430/MSP430ISelLowering.cpp
index c5901bc..3d3ee92 100644
--- a/lib/Target/MSP430/MSP430ISelLowering.cpp
+++ b/lib/Target/MSP430/MSP430ISelLowering.cpp
@@ -57,11 +57,8 @@ HWMultMode("msp430-hwmult-mode", cl::Hidden,
                 "Assume hardware multiplier cannot be used inside interrupts"),
              clEnumValEnd));
 
-MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) :
-  TargetLowering(tm, new TargetLoweringObjectFileELF()),
-  Subtarget(*tm.getSubtargetImpl()) {
-
-  TD = getDataLayout();
+MSP430TargetLowering::MSP430TargetLowering(const TargetMachine &TM)
+    : TargetLowering(TM, new TargetLoweringObjectFileELF()) {
 
   // Set up the register classes.
   addRegisterClass(MVT::i8,  &MSP430::GR8RegClass);
@@ -1032,7 +1029,7 @@ MSP430TargetLowering::getReturnAddressFrameIndex(SelectionDAG &DAG) const {
 
   if (ReturnAddrIndex == 0) {
     // Set up a frame object for the return address.
-    uint64_t SlotSize = TD->getPointerSize();
+    uint64_t SlotSize = getDataLayout()->getPointerSize();
     ReturnAddrIndex = MF.getFrameInfo()->CreateFixedObject(SlotSize, -SlotSize,
                                                            true);
     FuncInfo->setRAIndex(ReturnAddrIndex);
@@ -1055,7 +1052,7 @@ SDValue MSP430TargetLowering::LowerRETURNADDR(SDValue Op,
   if (Depth > 0) {
     SDValue FrameAddr = LowerFRAMEADDR(Op, DAG);
     SDValue Offset =
-      DAG.getConstant(TD->getPointerSize(), MVT::i16);
+        DAG.getConstant(getDataLayout()->getPointerSize(), MVT::i16);
     return DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(),
                        DAG.getNode(ISD::ADD, dl, getPointerTy(),
                                    FrameAddr, Offset),
diff --git a/lib/Target/MSP430/MSP430ISelLowering.h b/lib/Target/MSP430/MSP430ISelLowering.h
index 3ced61d..3e2f344 100644
--- a/lib/Target/MSP430/MSP430ISelLowering.h
+++ b/lib/Target/MSP430/MSP430ISelLowering.h
@@ -66,12 +66,9 @@ namespace llvm {
     };
   }
 
-  class MSP430Subtarget;
-  class MSP430TargetMachine;
-
   class MSP430TargetLowering : public TargetLowering {
   public:
-    explicit MSP430TargetLowering(MSP430TargetMachine &TM);
+    explicit MSP430TargetLowering(const TargetMachine &TM);
 
     MVT getScalarShiftAmountTy(EVT LHSTy) const override { return MVT::i8; }
 
@@ -170,9 +167,6 @@ namespace llvm {
                                     SDValue &Offset,
                                     ISD::MemIndexedMode &AM,
                                     SelectionDAG &DAG) const override;
-
-    const MSP430Subtarget &Subtarget;
-    const DataLayout *TD;
   };
 } // namespace llvm
 
diff --git a/lib/Target/MSP430/MSP430InstrInfo.cpp b/lib/Target/MSP430/MSP430InstrInfo.cpp
index 0c04ddb..ccb6c09 100644
--- a/lib/Target/MSP430/MSP430InstrInfo.cpp
+++ b/lib/Target/MSP430/MSP430InstrInfo.cpp
@@ -30,9 +30,9 @@ using namespace llvm;
 // Pin the vtable to this file.
 void MSP430InstrInfo::anchor() {}
 
-MSP430InstrInfo::MSP430InstrInfo(MSP430TargetMachine &tm)
+MSP430InstrInfo::MSP430InstrInfo(MSP430Subtarget &STI)
   : MSP430GenInstrInfo(MSP430::ADJCALLSTACKDOWN, MSP430::ADJCALLSTACKUP),
-    RI(tm) {}
+    RI() {}
 
 void MSP430InstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
                                           MachineBasicBlock::iterator MI,
diff --git a/lib/Target/MSP430/MSP430InstrInfo.h b/lib/Target/MSP430/MSP430InstrInfo.h
index 1ffcebb..e6baaef 100644
--- a/lib/Target/MSP430/MSP430InstrInfo.h
+++ b/lib/Target/MSP430/MSP430InstrInfo.h
@@ -22,7 +22,7 @@
 
 namespace llvm {
 
-class MSP430TargetMachine;
+class MSP430Subtarget;
 
 /// MSP430II - This namespace holds all of the target specific flags that
 /// instruction info tracks.
@@ -44,7 +44,7 @@ class MSP430InstrInfo : public MSP430GenInstrInfo {
   const MSP430RegisterInfo RI;
   virtual void anchor();
 public:
-  explicit MSP430InstrInfo(MSP430TargetMachine &TM);
+  explicit MSP430InstrInfo(MSP430Subtarget &STI);
 
   /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
   /// such, whenever a client has an instance of instruction info, it should
diff --git a/lib/Target/MSP430/MSP430RegisterInfo.cpp b/lib/Target/MSP430/MSP430RegisterInfo.cpp
index 341fb64..691bcee 100644
--- a/lib/Target/MSP430/MSP430RegisterInfo.cpp
+++ b/lib/Target/MSP430/MSP430RegisterInfo.cpp
@@ -32,10 +32,8 @@ using namespace llvm;
 #include "MSP430GenRegisterInfo.inc"
 
 // FIXME: Provide proper call frame setup / destroy opcodes.
-MSP430RegisterInfo::MSP430RegisterInfo(MSP430TargetMachine &tm)
-  : MSP430GenRegisterInfo(MSP430::PCW), TM(tm) {
-  StackAlign = TM.getFrameLowering()->getStackAlignment();
-}
+MSP430RegisterInfo::MSP430RegisterInfo()
+  : MSP430GenRegisterInfo(MSP430::PCW) {}
 
 const MCPhysReg*
 MSP430RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
diff --git a/lib/Target/MSP430/MSP430RegisterInfo.h b/lib/Target/MSP430/MSP430RegisterInfo.h
index a607528..cb01961 100644
--- a/lib/Target/MSP430/MSP430RegisterInfo.h
+++ b/lib/Target/MSP430/MSP430RegisterInfo.h
@@ -21,18 +21,9 @@
 
 namespace llvm {
 
-class TargetInstrInfo;
-class MSP430TargetMachine;
-
 struct MSP430RegisterInfo : public MSP430GenRegisterInfo {
-private:
-  MSP430TargetMachine &TM;
-
-  /// StackAlign - Default stack alignment.
-  ///
-  unsigned StackAlign;
 public:
-  MSP430RegisterInfo(MSP430TargetMachine &tm);
+  MSP430RegisterInfo();
 
   /// Code Generation virtual methods...
   const MCPhysReg *
diff --git a/lib/Target/MSP430/MSP430SelectionDAGInfo.cpp b/lib/Target/MSP430/MSP430SelectionDAGInfo.cpp
index c700383..3897ef6 100644
--- a/lib/Target/MSP430/MSP430SelectionDAGInfo.cpp
+++ b/lib/Target/MSP430/MSP430SelectionDAGInfo.cpp
@@ -16,9 +16,8 @@ using namespace llvm;
 
 #define DEBUG_TYPE "msp430-selectiondag-info"
 
-MSP430SelectionDAGInfo::MSP430SelectionDAGInfo(const MSP430TargetMachine &TM)
-  : TargetSelectionDAGInfo(TM) {
-}
+MSP430SelectionDAGInfo::MSP430SelectionDAGInfo(const DataLayout &DL)
+    : TargetSelectionDAGInfo(&DL) {}
 
 MSP430SelectionDAGInfo::~MSP430SelectionDAGInfo() {
 }
diff --git a/lib/Target/MSP430/MSP430SelectionDAGInfo.h b/lib/Target/MSP430/MSP430SelectionDAGInfo.h
index fa81948..cb04adc 100644
--- a/lib/Target/MSP430/MSP430SelectionDAGInfo.h
+++ b/lib/Target/MSP430/MSP430SelectionDAGInfo.h
@@ -22,7 +22,7 @@ class MSP430TargetMachine;
 
 class MSP430SelectionDAGInfo : public TargetSelectionDAGInfo {
 public:
-  explicit MSP430SelectionDAGInfo(const MSP430TargetMachine &TM);
+  explicit MSP430SelectionDAGInfo(const DataLayout &DL);
   ~MSP430SelectionDAGInfo();
 };
 
diff --git a/lib/Target/MSP430/MSP430Subtarget.cpp b/lib/Target/MSP430/MSP430Subtarget.cpp
index 68ad091..dbddc52 100644
--- a/lib/Target/MSP430/MSP430Subtarget.cpp
+++ b/lib/Target/MSP430/MSP430Subtarget.cpp
@@ -25,12 +25,15 @@ using namespace llvm;
 
 void MSP430Subtarget::anchor() { }
 
-MSP430Subtarget::MSP430Subtarget(const std::string &TT,
-                                 const std::string &CPU,
-                                 const std::string &FS) :
-  MSP430GenSubtargetInfo(TT, CPU, FS) {
-  std::string CPUName = "generic";
-
-  // Parse features string.
-  ParseSubtargetFeatures(CPUName, FS);
+MSP430Subtarget &MSP430Subtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
+  ParseSubtargetFeatures("generic", FS);
+  return *this;
 }
+
+MSP430Subtarget::MSP430Subtarget(const std::string &TT, const std::string &CPU,
+                                 const std::string &FS, const TargetMachine &TM)
+    : MSP430GenSubtargetInfo(TT, CPU, FS),
+      // FIXME: Check DataLayout string.
+      DL("e-m:e-p:16:16-i32:16:32-n8:16"), FrameLowering(),
+      InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM),
+      TSInfo(DL) {}
diff --git a/lib/Target/MSP430/MSP430Subtarget.h b/lib/Target/MSP430/MSP430Subtarget.h
index 4d8792e..0152ad1 100644
--- a/lib/Target/MSP430/MSP430Subtarget.h
+++ b/lib/Target/MSP430/MSP430Subtarget.h
@@ -14,6 +14,12 @@
 #ifndef LLVM_TARGET_MSP430_SUBTARGET_H
 #define LLVM_TARGET_MSP430_SUBTARGET_H
 
+#include "MSP430FrameLowering.h"
+#include "MSP430InstrInfo.h"
+#include "MSP430ISelLowering.h"
+#include "MSP430RegisterInfo.h"
+#include "MSP430SelectionDAGInfo.h"
+#include "llvm/IR/DataLayout.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
 #include <string>
 
@@ -26,16 +32,33 @@ class StringRef;
 class MSP430Subtarget : public MSP430GenSubtargetInfo {
   virtual void anchor();
   bool ExtendedInsts;
+  const DataLayout DL; // Calculates type size & alignment
+  MSP430FrameLowering FrameLowering;
+  MSP430InstrInfo InstrInfo;
+  MSP430TargetLowering TLInfo;
+  MSP430SelectionDAGInfo TSInfo;
+
 public:
   /// This constructor initializes the data members to match that
   /// of the specified triple.
   ///
   MSP430Subtarget(const std::string &TT, const std::string &CPU,
-                  const std::string &FS);
+                  const std::string &FS, const TargetMachine &TM);
+
+  MSP430Subtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
 
   /// ParseSubtargetFeatures - Parses features string setting specified
   /// subtarget options.  Definition of function is auto generated by tblgen.
   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
+
+  const TargetFrameLowering *getFrameLowering() const { return &FrameLowering; }
+  const MSP430InstrInfo *getInstrInfo() const { return &InstrInfo; }
+  const DataLayout *getDataLayout() const { return &DL; }
+  const TargetRegisterInfo *getRegisterInfo() const {
+    return &InstrInfo.getRegisterInfo();
+  }
+  const MSP430TargetLowering *getTargetLowering() const { return &TLInfo; }
+  const MSP430SelectionDAGInfo *getSelectionDAGInfo() const { return &TSInfo; }
 };
 } // End llvm namespace
 
diff --git a/lib/Target/MSP430/MSP430TargetMachine.cpp b/lib/Target/MSP430/MSP430TargetMachine.cpp
index 50be2be..5ca36f2 100644
--- a/lib/Target/MSP430/MSP430TargetMachine.cpp
+++ b/lib/Target/MSP430/MSP430TargetMachine.cpp
@@ -24,19 +24,13 @@ extern "C" void LLVMInitializeMSP430Target() {
   RegisterTargetMachine<MSP430TargetMachine> X(TheMSP430Target);
 }
 
-MSP430TargetMachine::MSP430TargetMachine(const Target &T,
-                                         StringRef TT,
-                                         StringRef CPU,
-                                         StringRef FS,
+MSP430TargetMachine::MSP430TargetMachine(const Target &T, StringRef TT,
+                                         StringRef CPU, StringRef FS,
                                          const TargetOptions &Options,
                                          Reloc::Model RM, CodeModel::Model CM,
                                          CodeGenOpt::Level OL)
-  : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
-    Subtarget(TT, CPU, FS),
-    // FIXME: Check DataLayout string.
-    DL("e-m:e-p:16:16-i32:16:32-n8:16"),
-    InstrInfo(*this), TLInfo(*this), TSInfo(*this),
-    FrameLowering(Subtarget) {
+    : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+      Subtarget(TT, CPU, FS, *this) {
   initAsmInfo();
 }
 
diff --git a/lib/Target/MSP430/MSP430TargetMachine.h b/lib/Target/MSP430/MSP430TargetMachine.h
index ea5d407..efa8403 100644
--- a/lib/Target/MSP430/MSP430TargetMachine.h
+++ b/lib/Target/MSP430/MSP430TargetMachine.h
@@ -15,13 +15,7 @@
 #ifndef LLVM_TARGET_MSP430_TARGETMACHINE_H
 #define LLVM_TARGET_MSP430_TARGETMACHINE_H
 
-#include "MSP430FrameLowering.h"
-#include "MSP430ISelLowering.h"
-#include "MSP430InstrInfo.h"
-#include "MSP430RegisterInfo.h"
-#include "MSP430SelectionDAGInfo.h"
 #include "MSP430Subtarget.h"
-#include "llvm/IR/DataLayout.h"
 #include "llvm/Target/TargetFrameLowering.h"
 #include "llvm/Target/TargetMachine.h"
 
@@ -31,11 +25,6 @@ namespace llvm {
 ///
 class MSP430TargetMachine : public LLVMTargetMachine {
   MSP430Subtarget        Subtarget;
-  const DataLayout       DL;       // Calculates type size & alignment
-  MSP430InstrInfo        InstrInfo;
-  MSP430TargetLowering   TLInfo;
-  MSP430SelectionDAGInfo TSInfo;
-  MSP430FrameLowering    FrameLowering;
 
 public:
   MSP430TargetMachine(const Target &T, StringRef TT,
@@ -44,22 +33,25 @@ public:
                       CodeGenOpt::Level OL);
 
   const TargetFrameLowering *getFrameLowering() const override {
-    return &FrameLowering;
+    return getSubtargetImpl()->getFrameLowering();
+  }
+  const MSP430InstrInfo *getInstrInfo() const override {
+    return getSubtargetImpl()->getInstrInfo();
+  }
+  const DataLayout *getDataLayout() const override {
+    return getSubtargetImpl()->getDataLayout();
+  }
+  const MSP430Subtarget *getSubtargetImpl() const override {
+    return &Subtarget;
   }
-  const MSP430InstrInfo *getInstrInfo() const override  { return &InstrInfo; }
-  const DataLayout *getDataLayout() const override     { return &DL;}
-  const MSP430Subtarget *getSubtargetImpl() const override { return &Subtarget; }
-
   const TargetRegisterInfo *getRegisterInfo() const override {
-    return &InstrInfo.getRegisterInfo();
+    return getSubtargetImpl()->getRegisterInfo();
   }
-
   const MSP430TargetLowering *getTargetLowering() const override {
-    return &TLInfo;
+    return getSubtargetImpl()->getTargetLowering();
   }
-
-  const MSP430SelectionDAGInfo* getSelectionDAGInfo() const override {
-    return &TSInfo;
+  const MSP430SelectionDAGInfo *getSelectionDAGInfo() const override {
+    return getSubtargetImpl()->getSelectionDAGInfo();
   }
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
 }; // MSP430TargetMachine.