X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FPowerPC%2FPPCSubtarget.h;h=75fcf6238a27a0463237a86a8f4fda8178241d5f;hb=f27805b5c5a2c58aeea5dc9d305d6dba61b9f2aa;hp=e8ad25f3eba9df63853d198c9f167321b97f07bd;hpb=57fc62c8d2bf056b0d2a0e3d1b82b3b787b899f8;p=oota-llvm.git

diff --git a/lib/Target/PowerPC/PPCSubtarget.h b/lib/Target/PowerPC/PPCSubtarget.h
index e8ad25f3eba..75fcf6238a2 100644
--- a/lib/Target/PowerPC/PPCSubtarget.h
+++ b/lib/Target/PowerPC/PPCSubtarget.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Nate Begeman 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.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -19,21 +19,40 @@
 
 #include <string>
 
+// GCC #defines PPC on Linux but we use it as our namespace name
+#undef PPC
+
 namespace llvm {
-class Module;
+
+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:
-  const TargetMachine &TM;
-  
   /// 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;
@@ -43,18 +62,22 @@ protected:
   bool HasAltivec;
   bool HasFSQRT;
   bool HasSTFIWX;
-  bool IsDarwin;
   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 module.
+  /// of the specified triple.
   ///
-  PPCSubtarget(const TargetMachine &TM, const Module &M,
-               const std::string &FS, bool is64Bit);
+  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.
-  void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
+  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.
@@ -65,6 +88,10 @@ public:
   /// 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; }
@@ -72,7 +99,10 @@ public:
   /// getTargetDataString - Return the pointer size and type alignment
   /// properties of this subtarget.
   const char *getTargetDataString() const {
-    return isPPC64() ? "E-p:64:64-d:32-l:32" : "E-p:32:32-d:32-l:32";
+    // 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.
@@ -91,15 +121,26 @@ public:
   /// 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;
+  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; }
-  
-  bool isDarwin() const { return IsDarwin; }
+
+  /// 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