1 files changed, 147 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/PowerPC/PPCSubtarget.h b/contrib/llvm/lib/Target/PowerPC/PPCSubtarget.h
new file mode 100644
index 0000000..75fcf62
--- /dev/null
+++ b/contrib/llvm/lib/Target/PowerPC/PPCSubtarget.h
@@ -0,0 +1,147 @@
+//=====-- 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 TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef POWERPCSUBTARGET_H
+#define POWERPCSUBTARGET_H
+
+#include "llvm/Target/TargetInstrItineraries.h"
+#include "llvm/Target/TargetSubtarget.h"
+
+#include <string>
+
+// GCC #defines PPC on Linux but we use it as our namespace name
+#undef PPC
+
+namespace llvm {
+
+namespace PPC {
+  // -m directive values.
+  enum {
+    DIR_NONE,
+    DIR_32,
+    DIR_601, 
+    DIR_602, 
+    DIR_603, 
+    DIR_7400,
+    DIR_750, 
+    DIR_970, 
+    DIR_64  
+  };
+}
+
+class GlobalValue;
+class TargetMachine;
+  
+class PPCSubtarget : public TargetSubtarget {
+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 IsGigaProcessor;
+  bool Has64BitSupport;
+  bool Use64BitRegs;
+  bool IsPPC64;
+  bool HasAltivec;
+  bool HasFSQRT;
+  bool HasSTFIWX;
+  bool HasLazyResolverStubs;
+  
+  /// DarwinVers - Nonzero if this is a darwin platform.  Otherwise, the numeric
+  /// version of the platform, e.g. 8 = 10.4 (Tiger), 9 = 10.5 (Leopard), etc.
+  unsigned char DarwinVers; // Is any darwin-ppc platform.
+public:
+  /// This constructor initializes the data members to match that
+  /// of the specified triple.
+  ///
+  PPCSubtarget(const std::string &TT, const std::string &FS, bool is64Bit);
+  
+  /// ParseSubtargetFeatures - Parses features string setting specified 
+  /// subtarget options.  Definition of function is auto generated by tblgen.
+  std::string ParseSubtargetFeatures(const std::string &FS,
+                                     const std::string &CPU);
+
+  
+  /// 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; }
+
+  /// getTargetDataString - Return the pointer size and type alignment
+  /// properties of this subtarget.
+  const char *getTargetDataString() const {
+    // Note, the alignment values for f64 and i64 on ppc64 in Darwin
+    // documentation are wrong; these are correct (i.e. "what gcc does").
+    return isPPC64() ? "E-p:64:64-f64:64:64-i64:64:64-f128:64:128-n32:64"
+                     : "E-p:32:32-f64:32:64-i64:32:64-f128:64:128-n32";
+  }
+
+  /// 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;
+  
+  // Specific obvious features.
+  bool hasFSQRT() const { return HasFSQRT; }
+  bool hasSTFIWX() const { return HasSTFIWX; }
+  bool hasAltivec() const { return HasAltivec; }
+  bool isGigaProcessor() const { return IsGigaProcessor; }
+
+  /// isDarwin - True if this is any darwin platform.
+  bool isDarwin() const { return DarwinVers != 0; }
+  /// isDarwin - True if this is darwin9 (leopard, 10.5) or above.
+  bool isDarwin9() const { return DarwinVers >= 9; }
+
+  /// getDarwinVers - Return the darwin version number, 8 = tiger, 9 = leopard.
+  unsigned getDarwinVers() const { return DarwinVers; }
+
+  bool isDarwinABI() const { return isDarwin(); }
+  bool isSVR4ABI() const { return !isDarwin(); }
+
+};
+} // End llvm namespace
+
+#endif