done

[oota-llvm.git] / lib / Target / X86 / X86Subtarget.h

diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index 24247ba6ab3c591fc40b020e1809151beab2f0a5..2cda9705e31edccb8967d2d2f6bdfb1a15d89901 100644 (file)
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.h
@@ -20,25 +20,45 @@
 
 namespace llvm {
 class Module;
+class GlobalValue;
+class TargetMachine;
+  
+namespace PICStyle {
+enum Style {
+  Stub, GOT, RIPRel, WinPIC, None
+};
+}
 
 class X86Subtarget : public TargetSubtarget {
+public:
+  enum AsmWriterFlavorTy {
+    // Note: This numbering has to match the GCC assembler dialects for inline
+    // asm alternatives to work right.
+    ATT = 0, Intel = 1, Unset
+  };
 protected:
   enum X86SSEEnum {
-    NoMMXSSE, MMX, SSE1, SSE2, SSE3
+    NoMMXSSE, MMX, SSE1, SSE2, SSE3, SSSE3
   };
 
   enum X863DNowEnum {
     NoThreeDNow, ThreeDNow, ThreeDNowA
   };
 
-  /// X86SSELevel - MMX, SSE1, SSE2, SSE3, or none supported.
+  /// AsmFlavor - Which x86 asm dialect to use.
+  AsmWriterFlavorTy AsmFlavor;
+
+  /// PICStyle - Which PIC style to use
+  PICStyle::Style PICStyle;
+  
+  /// X86SSELevel - MMX, SSE1, SSE2, SSE3, SSSE3, or none supported.
   X86SSEEnum X86SSELevel;
 
   /// X863DNowLevel - 3DNow or 3DNow Athlon, or none supported.
   X863DNowEnum X863DNowLevel;
 
-  /// Is64Bit - True if the processor supports Em64T.
-  bool Is64Bit;
+  /// HasX86_64 - True if the processor supports X86-64 instructions.
+  bool HasX86_64;
 
   /// stackAlignment - The minimum alignment known to hold of the stack frame on
   /// entry to the function and which must be maintained by every function.
@@ -47,15 +67,20 @@ protected:
   /// Min. memset / memcpy size that is turned into rep/movs, rep/stos ops.
   unsigned MinRepStrSizeThreshold;
 
+private:
+  /// Is64Bit - True if the processor supports 64-bit instructions and module
+  /// pointer size is 64 bit.
+  bool Is64Bit;
+
 public:
   enum {
-    isELF, isCygwin, isDarwin, isWindows
+    isELF, isCygwin, isDarwin, isWindows, isMingw
   } TargetType;
-    
+
   /// This constructor initializes the data members to match that
   /// of the specified module.
   ///
-  X86Subtarget(const Module &M, const std::string &FS);
+  X86Subtarget(const Module &M, const std::string &FS, bool is64Bit);
 
   /// getStackAlignment - Returns the minimum alignment known to hold of the
   /// stack frame on entry to the function and which must be maintained by every
@@ -67,23 +92,65 @@ public:
   /// instruction. This is only used if the src / dst alignment is not DWORD
   /// aligned.
   unsigned getMinRepStrSizeThreshold() const { return MinRepStrSizeThreshold; }
- 
-  /// ParseSubtargetFeatures - Parses features string setting specified 
+
+  /// 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);
 
+  /// AutoDetectSubtargetFeatures - Auto-detect CPU features using CPUID
+  /// instruction.
+  void AutoDetectSubtargetFeatures();
+
   bool is64Bit() const { return Is64Bit; }
 
+  PICStyle::Style getPICStyle() const { return PICStyle; }
+  void setPICStyle(PICStyle::Style Style)  { PICStyle = Style; }
+
   bool hasMMX() const { return X86SSELevel >= MMX; }
   bool hasSSE1() const { return X86SSELevel >= SSE1; }
   bool hasSSE2() const { return X86SSELevel >= SSE2; }
   bool hasSSE3() const { return X86SSELevel >= SSE3; }
+  bool hasSSSE3() const { return X86SSELevel >= SSSE3; }
   bool has3DNow() const { return X863DNowLevel >= ThreeDNow; }
   bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
 
+  unsigned getAsmFlavor() const {
+    return AsmFlavor != Unset ? unsigned(AsmFlavor) : 0;
+  }
+
+  bool isFlavorAtt() const { return AsmFlavor == ATT; }
+  bool isFlavorIntel() const { return AsmFlavor == Intel; }
+
   bool isTargetDarwin() const { return TargetType == isDarwin; }
   bool isTargetELF() const { return TargetType == isELF; }
+  bool isTargetWindows() const { return TargetType == isWindows; }
+  bool isTargetMingw() const { return TargetType == isMingw; }
+  bool isTargetCygMing() const { return (TargetType == isMingw ||
+                                         TargetType == isCygwin); }
+  bool isTargetCygwin() const { return TargetType == isCygwin; }
+
+  bool isPICStyleSet() const { return PICStyle != PICStyle::None; }
+  bool isPICStyleGOT() const { return PICStyle == PICStyle::GOT; }
+  bool isPICStyleStub() const { return PICStyle == PICStyle::Stub; }
+  bool isPICStyleRIPRel() const { return PICStyle == PICStyle::RIPRel; }
+  bool isPICStyleWinPIC() const { return PICStyle == PICStyle:: WinPIC; }
+    
+  /// True if accessing the GV requires an extra load. For Windows, dllimported
+  /// symbols are indirect, loading the value at address GV rather then the
+  /// value of GV itself. This means that the GlobalAddress must be in the base
+  /// or index register of the address, not the GV offset field.
+  bool GVRequiresExtraLoad(const GlobalValue* GV, const TargetMachine& TM,
+                           bool isDirectCall) const;
+
 };
+
+namespace X86 {
+  /// GetCpuIDAndInfo - Execute the specified cpuid and return the 4 values in
+  /// the specified arguments.  If we can't run cpuid on the host, return true.
+  bool GetCpuIDAndInfo(unsigned value, unsigned *rEAX, unsigned *rEBX,
+                       unsigned *rECX, unsigned *rEDX);
+}
+
 } // End llvm namespace
 
 #endif