--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/Target/PowerPC/PPCSubtarget.h	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,226 @@
+//===-- PPCSubtarget.h - Define Subtarget for the PPC ----------*- C++ -*--===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the PowerPC specific subclass of TargetSubtargetInfo.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef POWERPCSUBTARGET_H
+#define POWERPCSUBTARGET_H
+
+#include "llvm/ADT/Triple.h"
+#include "llvm/MC/MCInstrItineraries.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
+#include <string>
+
+#define GET_SUBTARGETINFO_HEADER
+#include "PPCGenSubtargetInfo.inc"
+
+// GCC #defines PPC on Linux but we use it as our namespace name
+#undef PPC
+
+namespace llvm {
+class StringRef;
+
+namespace PPC {
+  // -m directive values.
+  enum {
+    DIR_NONE,
+    DIR_32,
+    DIR_440,
+    DIR_601,
+    DIR_602,
+    DIR_603,
+    DIR_7400,
+    DIR_750,
+    DIR_970,
+    DIR_A2,
+    DIR_E500mc,
+    DIR_E5500,
+    DIR_PWR3,
+    DIR_PWR4,
+    DIR_PWR5,
+    DIR_PWR5X,
+    DIR_PWR6,
+    DIR_PWR6X,
+    DIR_PWR7,
+    DIR_64
+  };
+}
+
+class GlobalValue;
+class TargetMachine;
+
+class PPCSubtarget : public PPCGenSubtargetInfo {
+protected:
+  /// stackAlignment - The minimum alignment known to hold of the stack frame on
+  /// entry to the function and which must be maintained by every function.
+  unsigned StackAlignment;
+
+  /// Selected instruction itineraries (one entry per itinerary class.)
+  InstrItineraryData InstrItins;
+
+  /// Which cpu directive was used.
+  unsigned DarwinDirective;
+
+  /// Used by the ISel to turn in optimizations for POWER4-derived architectures
+  bool HasMFOCRF;
+  bool Has64BitSupport;
+  bool Use64BitRegs;
+  bool IsPPC64;
+  bool HasAltivec;
+  bool HasQPX;
+  bool HasVSX;
+  bool HasFCPSGN;
+  bool HasFSQRT;
+  bool HasFRE, HasFRES, HasFRSQRTE, HasFRSQRTES;
+  bool HasRecipPrec;
+  bool HasSTFIWX;
+  bool HasLFIWAX;
+  bool HasFPRND;
+  bool HasFPCVT;
+  bool HasISEL;
+  bool HasPOPCNTD;
+  bool HasLDBRX;
+  bool IsBookE;
+  bool DeprecatedMFTB;
+  bool DeprecatedDST;
+  bool HasLazyResolverStubs;
+  bool IsJITCodeModel;
+  bool IsLittleEndian;
+
+  /// TargetTriple - What processor and OS we're targeting.
+  Triple TargetTriple;
+
+public:
+  /// This constructor initializes the data members to match that
+  /// of the specified triple.
+  ///
+  PPCSubtarget(const std::string &TT, const std::string &CPU,
+               const std::string &FS, bool is64Bit);
+
+  /// ParseSubtargetFeatures - Parses features string setting specified
+  /// subtarget options.  Definition of function is auto generated by tblgen.
+  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
+
+  /// SetJITMode - This is called to inform the subtarget info that we are
+  /// producing code for the JIT.
+  void SetJITMode();
+
+  /// getStackAlignment - Returns the minimum alignment known to hold of the
+  /// stack frame on entry to the function and which must be maintained by every
+  /// function for this subtarget.
+  unsigned getStackAlignment() const { return StackAlignment; }
+
+  /// getDarwinDirective - Returns the -m directive specified for the cpu.
+  ///
+  unsigned getDarwinDirective() const { return DarwinDirective; }
+
+  /// getInstrItins - Return the instruction itineraies based on subtarget
+  /// selection.
+  const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
+
+  /// getDataLayoutString - Return the pointer size and type alignment
+  /// properties of this subtarget.
+  const char *getDataLayoutString() const {
+    // Note, the alignment values for f64 and i64 on ppc64 in Darwin
+    // documentation are wrong; these are correct (i.e. "what gcc does").
+    if (isPPC64() && isSVR4ABI()) {
+      if (TargetTriple.getOS() == llvm::Triple::FreeBSD)
+        return "E-p:64:64-f64:64:64-i64:64:64-v128:128:128-n32:64";
+      else
+        return "E-p:64:64-f64:64:64-i64:64:64-f128:128:128-v128:128:128-n32:64";
+    }
+
+    return isPPC64() ? "E-p:64:64-f64:64:64-i64:64:64-f128:64:128-n32:64"
+                     : "E-p:32:32-f64:64:64-i64:64:64-f128:64:128-n32";
+  }
+
+  /// \brief Reset the features for the PowerPC target.
+  virtual void resetSubtargetFeatures(const MachineFunction *MF);
+private:
+  void initializeEnvironment();
+  void resetSubtargetFeatures(StringRef CPU, StringRef FS);
+
+public:
+  /// isPPC64 - Return true if we are generating code for 64-bit pointer mode.
+  ///
+  bool isPPC64() const { return IsPPC64; }
+
+  /// has64BitSupport - Return true if the selected CPU supports 64-bit
+  /// instructions, regardless of whether we are in 32-bit or 64-bit mode.
+  bool has64BitSupport() const { return Has64BitSupport; }
+
+  /// use64BitRegs - Return true if in 64-bit mode or if we should use 64-bit
+  /// registers in 32-bit mode when possible.  This can only true if
+  /// has64BitSupport() returns true.
+  bool use64BitRegs() const { return Use64BitRegs; }
+
+  /// hasLazyResolverStub - Return true if accesses to the specified global have
+  /// to go through a dyld lazy resolution stub.  This means that an extra load
+  /// is required to get the address of the global.
+  bool hasLazyResolverStub(const GlobalValue *GV,
+                           const TargetMachine &TM) const;
+
+  // isJITCodeModel - True if we're generating code for the JIT
+  bool isJITCodeModel() const { return IsJITCodeModel; }
+
+  // isLittleEndian - True if generating little-endian code
+  bool isLittleEndian() const { return IsLittleEndian; }
+
+  // Specific obvious features.
+  bool hasFCPSGN() const { return HasFCPSGN; }
+  bool hasFSQRT() const { return HasFSQRT; }
+  bool hasFRE() const { return HasFRE; }
+  bool hasFRES() const { return HasFRES; }
+  bool hasFRSQRTE() const { return HasFRSQRTE; }
+  bool hasFRSQRTES() const { return HasFRSQRTES; }
+  bool hasRecipPrec() const { return HasRecipPrec; }
+  bool hasSTFIWX() const { return HasSTFIWX; }
+  bool hasLFIWAX() const { return HasLFIWAX; }
+  bool hasFPRND() const { return HasFPRND; }
+  bool hasFPCVT() const { return HasFPCVT; }
+  bool hasAltivec() const { return HasAltivec; }
+  bool hasQPX() const { return HasQPX; }
+  bool hasMFOCRF() const { return HasMFOCRF; }
+  bool hasISEL() const { return HasISEL; }
+  bool hasPOPCNTD() const { return HasPOPCNTD; }
+  bool hasLDBRX() const { return HasLDBRX; }
+  bool isBookE() const { return IsBookE; }
+  bool isDeprecatedMFTB() const { return DeprecatedMFTB; }
+  bool isDeprecatedDST() const { return DeprecatedDST; }
+
+  const Triple &getTargetTriple() const { return TargetTriple; }
+
+  /// isDarwin - True if this is any darwin platform.
+  bool isDarwin() const { return TargetTriple.isMacOSX(); }
+  /// isBGP - True if this is a BG/P platform.
+  bool isBGP() const { return TargetTriple.getVendor() == Triple::BGP; }
+  /// isBGQ - True if this is a BG/Q platform.
+  bool isBGQ() const { return TargetTriple.getVendor() == Triple::BGQ; }
+
+  bool isDarwinABI() const { return isDarwin(); }
+  bool isSVR4ABI() const { return !isDarwin(); }
+
+  /// enablePostRAScheduler - True at 'More' optimization.
+  bool enablePostRAScheduler(CodeGenOpt::Level OptLevel,
+                             TargetSubtargetInfo::AntiDepBreakMode& Mode,
+                             RegClassVector& CriticalPathRCs) const;
+
+  // Scheduling customization.
+  bool enableMachineScheduler() const;
+  void overrideSchedPolicy(MachineSchedPolicy &Policy,
+                           MachineInstr *begin,
+                           MachineInstr *end,
+                           unsigned NumRegionInstrs) const;
+  bool useAA() const;
+};
+} // End llvm namespace
+
+#endif