X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FType.h;h=3d2a6f8d8f71a769932dd4f1eec9e54dc650c0a6;hb=a7425d7fde61c2207a4467464df90b5e3e58a769;hp=db177994aeef28415c84d464e21d82e6c964b569;hpb=7ed47a13356daed2a34cd2209a31f92552e3bdd8;p=oota-llvm.git

diff --git a/include/llvm/Type.h b/include/llvm/Type.h
index db177994aee..3d2a6f8d8f7 100644
--- a/include/llvm/Type.h
+++ b/include/llvm/Type.h
@@ -14,9 +14,8 @@
 #include "llvm/AbstractTypeUser.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/DataTypes.h"
-#include "llvm/Support/Streams.h"
 #include "llvm/ADT/GraphTraits.h"
-#include "llvm/ADT/iterator"
+#include "llvm/ADT/iterator.h"
 #include <string>
 #include <vector>
 
@@ -26,6 +25,8 @@ class DerivedType;
 class PointerType;
 class IntegerType;
 class TypeMapBase;
+class raw_ostream;
+class Module;
 
 /// This file contains the declaration of the Type class.  For more "Type" type
 /// stuff, look in DerivedTypes.h.
@@ -156,12 +157,16 @@ protected:
   PATypeHandle *ContainedTys;
 
 public:
+  void print(raw_ostream &O) const;
   void print(std::ostream &O) const;
-  void print(std::ostream *O) const { if (O) print(*O); }
 
   /// @brief Debugging support: print to stderr
   void dump() const;
 
+  /// @brief Debugging support: print to stderr (use type names from context
+  /// module).
+  void dump(const Module *Context) const;
+
   //===--------------------------------------------------------------------===//
   // Property accessors for dealing with types... Some of these virtual methods
   // are defined in private classes defined in Type.cpp for primitive types.
@@ -172,8 +177,8 @@ public:
   ///
   inline TypeID getTypeID() const { return ID; }
 
-  /// getDescription - Return the string representation of the type...
-  const std::string &getDescription() const;
+  /// getDescription - Return the string representation of the type.
+  std::string getDescription() const;
 
   /// isInteger - True if this is an instance of IntegerType.
   ///
@@ -212,13 +217,33 @@ public:
   inline bool isPrimitiveType() const { return ID <= LastPrimitiveTyID; }
   inline bool isDerivedType()   const { return ID >= FirstDerivedTyID; }
 
-  /// isFirstClassType - Return true if the value is holdable in a register.
+  /// isFirstClassType - Return true if the type is "first class", meaning it
+  /// is a valid type for a Value.
   ///
   inline bool isFirstClassType() const {
+    // There are more first-class kinds than non-first-class kinds, so a
+    // negative test is simpler than a positive one.
+    return ID != FunctionTyID && ID != VoidTyID && ID != OpaqueTyID;
+  }
+
+  /// isSingleValueType - Return true if the type is a valid type for a
+  /// virtual register in codegen.  This includes all first-class types
+  /// except struct and array types.
+  ///
+  inline bool isSingleValueType() const {
     return (ID != VoidTyID && ID <= LastPrimitiveTyID) ||
             ID == IntegerTyID || ID == PointerTyID || ID == VectorTyID;
   }
 
+  /// isAggregateType - Return true if the type is an aggregate type. This
+  /// means it is valid as the first operand of an insertvalue or
+  /// extractvalue instruction. This includes struct and array types, but
+  /// does not include vector types.
+  ///
+  inline bool isAggregateType() const {
+    return ID == StructTyID || ID == ArrayTyID;
+  }
+
   /// 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.
@@ -242,6 +267,19 @@ public:
   /// primitive type.
   ///
   unsigned getPrimitiveSizeInBits() const;
+  
+  /// getFPMantissaWidth - Return the width of the mantissa of this type.  This
+  /// is only valid on scalar floating point types.  If the FP type does not
+  /// have a stable mantissa (e.g. ppc long double), this method returns -1.
+  int getFPMantissaWidth() const {
+    assert(isFloatingPoint() && "Not a floating point type!");
+    if (ID == FloatTyID) return 24;
+    if (ID == DoubleTyID) return 53;
+    if (ID == X86_FP80TyID) return 64;
+    if (ID == FP128TyID) return 113;
+    assert(ID == PPC_FP128TyID && "unknown fp type");
+    return -1;
+  }
 
   /// getForwardedType - Return the type that this type has been resolved to if
   /// it has been resolved to anything.  This is used to implement the
@@ -293,7 +331,7 @@ public:
   static const IntegerType *Int1Ty, *Int8Ty, *Int16Ty, *Int32Ty, *Int64Ty;
 
   /// Methods for support type inquiry through isa, cast, and dyn_cast:
-  static inline bool classof(const Type *T) { return true; }
+  static inline bool classof(const Type *) { return true; }
 
   void addRef() const {
     assert(isAbstract() && "Cannot add a reference to a non-abstract type!");
@@ -357,9 +395,21 @@ inline void PATypeHandle::removeUser() {
     Ty->removeAbstractTypeUser(User);
 }
 
-// Define inline methods for PATypeHolder...
+// Define inline methods for PATypeHolder.
+
+/// get - This implements the forwarding part of the union-find algorithm for
+/// abstract types.  Before every access to the Type*, we check to see if the
+/// type we are pointing to is forwarding to a new type.  If so, we drop our
+/// reference to the type.
+///
+inline Type* PATypeHolder::get() const {
+  const Type *NewTy = Ty->getForwardedType();
+  if (!NewTy) return const_cast<Type*>(Ty);
+  return *const_cast<PATypeHolder*>(this) = NewTy;
+}
 
 inline void PATypeHolder::addRef() {
+  assert(Ty && "Type Holder has a null type!");
   if (Ty->isAbstract())
     Ty->addRef();
 }
@@ -405,6 +455,7 @@ template <> inline bool isa_impl<PointerType, Type>(const Type &Ty) {
 }
 
 std::ostream &operator<<(std::ostream &OS, const Type &T);
+raw_ostream &operator<<(raw_ostream &OS, const Type &T);
 
 } // End llvm namespace