X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=utils%2FTableGen%2FTGValueTypes.cpp;h=f4893f50a6ff86032509a8b998f4cf39e5ae33d7;hb=1f044d443d7f9410f1d867d41a2b213a09ede1cf;hp=e4edca6cdc072ad11395536401917dbfc0d2f22c;hpb=1a55180238dbcf11113f610aea010447e51f595b;p=oota-llvm.git

diff --git a/utils/TableGen/TGValueTypes.cpp b/utils/TableGen/TGValueTypes.cpp
index e4edca6cdc0..f4893f50a6f 100644
--- a/utils/TableGen/TGValueTypes.cpp
+++ b/utils/TableGen/TGValueTypes.cpp
@@ -7,34 +7,52 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// The MVT type is used by tablegen as well as in LLVM. In order to handle
-// extended types, the MVT type uses support functions that call into
+// The EVT type is used by tablegen as well as in LLVM. In order to handle
+// extended types, the EVT type uses support functions that call into
 // LLVM's type system code. These aren't accessible in tablegen, so this
 // file provides simple replacements.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/Support/Casting.h"
 #include <map>
-#include <vector>
 using namespace llvm;
 
 namespace llvm {
 
 class Type {
+protected:
+  enum TypeKind {
+    TK_ExtendedIntegerType,
+    TK_ExtendedVectorType
+  };
+private:
+  TypeKind Kind;
 public:
+  TypeKind getKind() const {
+    return Kind;
+  }
+  Type(TypeKind K) : Kind(K) {}
   virtual unsigned getSizeInBits() const = 0;
-  virtual ~Type() {}
+  virtual ~Type();
 };
 
+// Provide out-of-line definition to prevent weak vtable.
+Type::~Type() {}
+
 }
 
+namespace {
 class ExtendedIntegerType : public Type {
   unsigned BitWidth;
 public:
   explicit ExtendedIntegerType(unsigned bits)
-    : BitWidth(bits) {}
-  unsigned getSizeInBits() const {
+    : Type(TK_ExtendedIntegerType), BitWidth(bits) {}
+  static bool classof(const Type *T) {
+    return T->getKind() == TK_ExtendedIntegerType;
+  }
+  virtual unsigned getSizeInBits() const {
     return getBitWidth();
   }
   unsigned getBitWidth() const {
@@ -43,83 +61,68 @@ public:
 };
 
 class ExtendedVectorType : public Type {
-  MVT ElementType;
+  EVT ElementType;
   unsigned NumElements;
 public:
-  ExtendedVectorType(MVT elty, unsigned num)
-    : ElementType(elty), NumElements(num) {}
-  unsigned getSizeInBits() const {
+  ExtendedVectorType(EVT elty, unsigned num)
+    : Type(TK_ExtendedVectorType), ElementType(elty), NumElements(num) {}
+  static bool classof(const Type *T) {
+    return T->getKind() == TK_ExtendedVectorType;
+  }
+  virtual unsigned getSizeInBits() const {
     return getNumElements() * getElementType().getSizeInBits();
   }
-  MVT getElementType() const {
+  EVT getElementType() const {
     return ElementType;
   }
   unsigned getNumElements() const {
     return NumElements;
   }
 };
+} // end anonymous namespace
 
 static std::map<unsigned, const Type *>
   ExtendedIntegerTypeMap;
 static std::map<std::pair<uintptr_t, uintptr_t>, const Type *>
   ExtendedVectorTypeMap;
 
-MVT MVT::getExtendedIntegerVT(unsigned BitWidth) {
-  const Type *&ET = ExtendedIntegerTypeMap[BitWidth];
-  if (!ET) ET = new ExtendedIntegerType(BitWidth);
-  MVT VT;
-  VT.LLVMTy = ET;
-  assert(VT.isExtended() && "Type is not extended!");
-  return VT;
-}
-
-MVT MVT::getExtendedVectorVT(MVT VT, unsigned NumElements) {
-  const Type *&ET = ExtendedVectorTypeMap[std::make_pair(VT.getRawBits(),
-                                                         NumElements)];
-  if (!ET) ET = new ExtendedVectorType(VT, NumElements);
-  MVT ResultVT;
-  ResultVT.LLVMTy = ET;
-  assert(ResultVT.isExtended() && "Type is not extended!");
-  return ResultVT;
-}
-
-bool MVT::isExtendedFloatingPoint() const {
+bool EVT::isExtendedFloatingPoint() const {
   assert(isExtended() && "Type is not extended!");
   // Extended floating-point types are not supported yet.
   return false;
 }
 
-bool MVT::isExtendedInteger() const {
+bool EVT::isExtendedInteger() const {
   assert(isExtended() && "Type is not extended!");
-  return dynamic_cast<const ExtendedIntegerType *>(LLVMTy) != 0;
+  return isa<ExtendedIntegerType>(LLVMTy);
 }
 
-bool MVT::isExtendedVector() const {
+bool EVT::isExtendedVector() const {
   assert(isExtended() && "Type is not extended!");
-  return dynamic_cast<const ExtendedVectorType *>(LLVMTy) != 0;
+  return isa<ExtendedVectorType>(LLVMTy);
 }
 
-bool MVT::isExtended64BitVector() const {
+bool EVT::isExtended64BitVector() const {
   assert(isExtended() && "Type is not extended!");
   return isExtendedVector() && getSizeInBits() == 64;
 }
 
-bool MVT::isExtended128BitVector() const {
+bool EVT::isExtended128BitVector() const {
   assert(isExtended() && "Type is not extended!");
   return isExtendedVector() && getSizeInBits() == 128;
 }
 
-MVT MVT::getExtendedVectorElementType() const {
+EVT EVT::getExtendedVectorElementType() const {
   assert(isExtendedVector() && "Type is not an extended vector!");
   return static_cast<const ExtendedVectorType *>(LLVMTy)->getElementType();
 }
 
-unsigned MVT::getExtendedVectorNumElements() const {
+unsigned EVT::getExtendedVectorNumElements() const {
   assert(isExtendedVector() && "Type is not an extended vector!");
   return static_cast<const ExtendedVectorType *>(LLVMTy)->getNumElements();
 }
 
-unsigned MVT::getExtendedSizeInBits() const {
+unsigned EVT::getExtendedSizeInBits() const {
   assert(isExtended() && "Type is not extended!");
   return LLVMTy->getSizeInBits();
 }