Changes from Nick Lewycky with a simplified PPCTargetAsmInfo.

[oota-llvm.git] / include / llvm / Target / TargetData.h

diff --git a/include/llvm/Target/TargetData.h b/include/llvm/Target/TargetData.h
index 1f031f2cc9130a4db759a3acf487c73ec0f45564..9b5aa99bde65815a520008a32dd7300a1c494bc9 100644 (file)
--- a/include/llvm/Target/TargetData.h
+++ b/include/llvm/Target/TargetData.h
@@ -31,6 +31,7 @@ class Value;
 class Type;
 class StructType;
 class StructLayout;
+class GlobalVariable;
 
 class TargetData : public ImmutablePass {
   bool          LittleEndian;          // Defaults to false
@@ -45,16 +46,26 @@ class TargetData : public ImmutablePass {
   unsigned char PointerAlignment;      // Defaults to 8 bytes
 
 public:
-  TargetData(const std::string &TargetName = "",
-             bool LittleEndian = false,
-             unsigned char PtrSize = 8,
-             unsigned char PtrAl   = 8, unsigned char DoubleAl = 8,
-             unsigned char FloatAl = 4, unsigned char LongAl   = 8,
-             unsigned char IntAl   = 4, unsigned char ShortAl  = 2,
-             unsigned char ByteAl  = 1, unsigned char BoolAl   = 1);
-
-  // Copy constructor
-  TargetData (const TargetData &TD) :
+  /// Default ctor - This has to exist, because this is a pass, but it should
+  /// never be used.
+  TargetData() {
+    assert(0 && "ERROR: Bad TargetData ctor used.  "
+           "Tool did not specify a TargetData to use?");
+    abort();
+  }
+    
+  /// Constructs a TargetData from a string of the following format:
+  /// "E-p:64:64-d:64-f:32-l:64-i:32-s:16-b:8-B:8"
+  /// The above string is considered the default, and any values not specified
+  /// in the string will be assumed to be as above.
+  TargetData(const std::string &TargetDescription) {
+    init(TargetDescription);
+  }
+
+  /// Initialize target data from properties stored in the module.
+  TargetData(const Module *M);
+
+  TargetData(const TargetData &TD) : 
     ImmutablePass(),
     LittleEndian(TD.isLittleEndian()),
     BoolAlignment(TD.getBoolAlignment()),
@@ -68,9 +79,13 @@ public:
     PointerAlignment(TD.getPointerAlignment()) {
   }
 
-  TargetData(const std::string &ToolName, const Module *M);
   ~TargetData();  // Not virtual, do not subclass this class
 
+  /// init - Specify configuration if not available at ctor time.
+  ///
+  void init(const std::string &TargetDescription);
+  
+  
   /// Target endianness...
   bool          isLittleEndian()       const { return     LittleEndian; }
   bool          isBigEndian()          const { return    !LittleEndian; }
@@ -87,6 +102,11 @@ public:
   unsigned char getPointerSize()       const { return      PointerSize; }
   unsigned char getPointerSizeInBits() const { return    8*PointerSize; }
 
+  /// getStringRepresentation - Return the string representation of the
+  /// TargetData.  This representation is in the same format accepted by the
+  /// string constructor above.
+  std::string getStringRepresentation() const;
+
   /// getTypeSize - Return the number of bytes necessary to hold the specified
   /// type.
   ///
@@ -123,6 +143,11 @@ public:
   /// removed, this method must be called whenever a StructType is removed to
   /// avoid a dangling pointer in this cache.
   void InvalidateStructLayoutInfo(const StructType *Ty) const;
+
+  /// getPreferredAlignmentLog - Return the preferred alignment of the
+  /// specified global, returned in log form.  This includes an explicitly
+  /// requested alignment (if the global has one).
+  unsigned getPreferredAlignmentLog(const GlobalVariable *GV) const;
 };
 
 /// StructLayout - used to lazily calculate structure layout information for a