Use the attribute enums to query if a parameter has an attribute.

[oota-llvm.git] / include / llvm / Type.h

diff --git a/include/llvm/Type.h b/include/llvm/Type.h
index 8b859c5448045002be38cd2352a127b32ad0ac9d..8e66ea86094888f52425e04fd5747b39a61966c9 100644 (file)
--- a/include/llvm/Type.h
+++ b/include/llvm/Type.h
@@ -16,6 +16,7 @@
 #define LLVM_TYPE_H
 
 #include "llvm/Support/Casting.h"
+#include "llvm/Support/DataTypes.h"
 
 namespace llvm {
 
@@ -25,6 +26,7 @@ class raw_ostream;
 class Module;
 class LLVMContext;
 class LLVMContextImpl;
+class StringRef;
 template<class GraphType> struct GraphTraits;
 
 /// The instances of the Type class are immutable: once they are created,
@@ -75,21 +77,32 @@ private:
   /// Context - This refers to the LLVMContext in which this type was uniqued.
   LLVMContext &Context;
 
-  TypeID   ID : 8;            // The current base type of this type.
-  unsigned SubclassData : 24; // Space for subclasses to store data
+  // Due to Ubuntu GCC bug 910363:
+  // https://bugs.launchpad.net/ubuntu/+source/gcc-4.5/+bug/910363
+  // Bitpack ID and SubclassData manually.
+  // Note: TypeID : low 8 bit; SubclassData : high 24 bit.
+  uint32_t IDAndSubclassData;
 
 protected:
   friend class LLVMContextImpl;
   explicit Type(LLVMContext &C, TypeID tid)
-    : Context(C), ID(tid), SubclassData(0),
-      NumContainedTys(0), ContainedTys(0) {}
+    : Context(C), IDAndSubclassData(0),
+      NumContainedTys(0), ContainedTys(0) {
+    setTypeID(tid);
+  }
   ~Type() {}
-
-  unsigned getSubclassData() const { return SubclassData; }
+  
+  void setTypeID(TypeID ID) {
+    IDAndSubclassData = (ID & 0xFF) | (IDAndSubclassData & 0xFFFFFF00);
+    assert(getTypeID() == ID && "TypeID data too large for field");
+  }
+  
+  unsigned getSubclassData() const { return IDAndSubclassData >> 8; }
+  
   void setSubclassData(unsigned val) {
-    SubclassData = val;
+    IDAndSubclassData = (IDAndSubclassData & 0xFF) | (val << 8);
     // Ensure we don't have any accidental truncation.
-    assert(SubclassData == val && "Subclass data too large for field");
+    assert(getSubclassData() == val && "Subclass data too large for field");
   }
 
   /// NumContainedTys - Keeps track of how many Type*'s there are in the
@@ -117,7 +130,7 @@ public:
   /// getTypeID - Return the type id for the type.  This will return one
   /// of the TypeID enum elements defined above.
   ///
-  TypeID getTypeID() const { return ID; }
+  TypeID getTypeID() const { return (TypeID)(IDAndSubclassData & 0xFF); }
 
   /// isVoidTy - Return true if this is 'void'.
   bool isVoidTy() const { return getTypeID() == VoidTyID; }
@@ -239,7 +252,7 @@ public:
 
   /// isSized - Return true if it makes sense to take the size of this type.  To
   /// get the actual size for a particular target, it is reasonable to use the
-  /// TargetData subsystem to do this.
+  /// DataLayout subsystem to do this.
   ///
   bool isSized() const {
     // If it's a primitive, it is always sized.
@@ -263,7 +276,7 @@ public:
   ///
   /// Note that this may not reflect the size of memory allocated for an
   /// instance of the type or the number of bytes that are written when an
-  /// instance of the type is stored to memory. The TargetData class provides
+  /// instance of the type is stored to memory. The DataLayout class provides
   /// additional query functions to provide this information.
   ///
   unsigned getPrimitiveSizeInBits() const;
@@ -282,10 +295,6 @@ public:
   /// otherwise return 'this'.
   Type *getScalarType();
 
-  /// getNumElements - If this is a vector type, return the number of elements,
-  /// otherwise return zero.
-  unsigned getNumElements();
-
   //===--------------------------------------------------------------------===//
   // Type Iteration support.
   //
@@ -306,6 +315,34 @@ public:
   ///
   unsigned getNumContainedTypes() const { return NumContainedTys; }
 
+  //===--------------------------------------------------------------------===//
+  // Helper methods corresponding to subclass methods.  This forces a cast to
+  // the specified subclass and calls its accessor.  "getVectorNumElements" (for
+  // example) is shorthand for cast<VectorType>(Ty)->getNumElements().  This is
+  // only intended to cover the core methods that are frequently used, helper
+  // methods should not be added here.
+  
+  unsigned getIntegerBitWidth() const;
+
+  Type *getFunctionParamType(unsigned i) const;
+  unsigned getFunctionNumParams() const;
+  bool isFunctionVarArg() const;
+  
+  StringRef getStructName() const;
+  unsigned getStructNumElements() const;
+  Type *getStructElementType(unsigned N) const;
+  
+  Type *getSequentialElementType() const;
+  
+  uint64_t getArrayNumElements() const;
+  Type *getArrayElementType() const { return getSequentialElementType(); }
+
+  unsigned getVectorNumElements() const;
+  Type *getVectorElementType() const { return getSequentialElementType(); }
+
+  unsigned getPointerAddressSpace() const;
+  Type *getPointerElementType() const { return getSequentialElementType(); }
+  
   //===--------------------------------------------------------------------===//
   // Static members exported by the Type class itself.  Useful for getting
   // instances of Type.