Fix a bug where the x86 backend would reject 64-bit r constraints when

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

diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index d939bc00c54d5d4d90f5ccee91423272a221c703..b95a2e45e5ec7ef835d96e5906e029344f65ea8f 100644 (file)
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.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.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -38,7 +38,7 @@ public:
   };
 protected:
   enum X86SSEEnum {
-    NoMMXSSE, MMX, SSE1, SSE2, SSE3, SSSE3
+    NoMMXSSE, MMX, SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42
   };
 
   enum X863DNowEnum {
@@ -53,8 +53,8 @@ protected:
   ///
   PICStyle::Style PICStyle;
   
-  /// X86SSELevel - MMX, SSE1, SSE2, SSE3, SSSE3, or none supported.
-  ///
+  /// X86SSELevel - MMX, SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42, or
+  /// none supported.
   X86SSEEnum X86SSELevel;
 
   /// X863DNowLevel - 3DNow or 3DNow Athlon, or none supported.
@@ -64,24 +64,27 @@ protected:
   /// HasX86_64 - True if the processor supports X86-64 instructions.
   ///
   bool HasX86_64;
+  
+  /// DarwinVers - Nonzero if this is a darwin platform: the numeric
+  /// version of the platform, e.g. 8 = 10.4 (Tiger), 9 = 10.5 (Leopard), etc.
+  unsigned char DarwinVers; // Is any darwin-x86 platform.
+
+  /// isLinux - true if this is a "linux" platform.
+  bool IsLinux;
 
   /// 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;
 
-  /// Min. memset / memcpy size that is turned into rep/movs, rep/stos ops.
+  /// Max. memset / memcpy size that is turned into rep/movs, rep/stos ops.
   ///
-  unsigned MinRepStrSizeThreshold;
+  unsigned MaxInlineSizeThreshold;
 
 private:
   /// Is64Bit - True if the processor supports 64-bit instructions and module
   /// pointer size is 64 bit.
   bool Is64Bit;
 
-  /// HasLow4GUserAddress - True if the low 4G user-space address is available.
-  ///
-  bool HasLow4GUserAddress;
-
 public:
   enum {
     isELF, isCygwin, isDarwin, isWindows, isMingw
@@ -97,11 +100,9 @@ public:
   /// function for this subtarget.
   unsigned getStackAlignment() const { return stackAlignment; }
 
-  /// getMinRepStrSizeThreshold - Returns the minimum memset / memcpy size
-  /// required to turn the operation into a X86 rep/movs or rep/stos
-  /// instruction. This is only used if the src / dst alignment is not DWORD
-  /// aligned.
-  unsigned getMinRepStrSizeThreshold() const { return MinRepStrSizeThreshold; }
+  /// getMaxInlineSizeThreshold - Returns the maximum memset / memcpy size
+  /// that still makes it profitable to inline the call.
+  unsigned getMaxInlineSizeThreshold() const { return MaxInlineSizeThreshold; }
 
   /// ParseSubtargetFeatures - Parses features string setting specified
   /// subtarget options.  Definition of function is auto generated by tblgen.
@@ -113,10 +114,6 @@ public:
 
   bool is64Bit() const { return Is64Bit; }
 
-  /// hasLow4GUserSpaceAddress - True if lower 4G user-space address is
-  /// available.
-  bool hasLow4GUserSpaceAddress() const { return HasLow4GUserAddress; }
-
   PICStyle::Style getPICStyle() const { return PICStyle; }
   void setPICStyle(PICStyle::Style Style)  { PICStyle = Style; }
 
@@ -125,6 +122,8 @@ public:
   bool hasSSE2() const { return X86SSELevel >= SSE2; }
   bool hasSSE3() const { return X86SSELevel >= SSE3; }
   bool hasSSSE3() const { return X86SSELevel >= SSSE3; }
+  bool hasSSE41() const { return X86SSELevel >= SSE41; }
+  bool hasSSE42() const { return X86SSELevel >= SSE42; }
   bool has3DNow() const { return X863DNowLevel >= ThreeDNow; }
   bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
 
@@ -136,12 +135,17 @@ public:
   bool isFlavorIntel() const { return AsmFlavor == Intel; }
 
   bool isTargetDarwin() const { return TargetType == isDarwin; }
-  bool isTargetELF() const { return TargetType == isELF; }
+  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 isTargetWin64() const {
+    return (Is64Bit && (TargetType == isMingw || TargetType == isWindows));
+  }
 
   std::string getDataLayout() const {
     const char *p;
@@ -161,7 +165,13 @@ public:
   bool isPICStyleStub() const { return PICStyle == PICStyle::Stub; }
   bool isPICStyleRIPRel() const { return PICStyle == PICStyle::RIPRel; }
   bool isPICStyleWinPIC() const { return PICStyle == PICStyle:: WinPIC; }
-    
+  
+  /// getDarwinVers - Return the darwin version number, 8 = tiger, 9 = leopard.
+  unsigned getDarwinVers() const { return DarwinVers; }
+  
+  /// isLinux - Return true if the target is "Linux".
+  bool isLinux() const { return IsLinux; }
+
   /// 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
@@ -169,6 +179,12 @@ public:
   bool GVRequiresExtraLoad(const GlobalValue* GV, const TargetMachine& TM,
                            bool isDirectCall) const;
 
+  /// This function returns the name of a function which has an interface
+  /// like the non-standard bzero function, if such a function exists on
+  /// the current subtarget and it is considered prefereable over
+  /// memset with zero passed as the second argument. Otherwise it
+  /// returns null.
+  const char *getBZeroEntry() const;
 };
 
 namespace X86 {