2 files changed, 27 insertions, 0 deletions
diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h
index 04a73fe..3bc00e9 100644
--- a/include/llvm/DerivedTypes.h
+++ b/include/llvm/DerivedTypes.h
@@ -369,6 +369,26 @@ public:
     return VectorType::get(EltTy, VTy->getNumElements());
   }
 
+  /// VectorType::getExtendedElementVectorType - This static method is like
+  /// getInteger except that the element types are twice as wide as the
+  /// elements in the input type.
+  ///
+  static VectorType *getExtendedElementVectorType(const VectorType *VTy) {
+    unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits();
+    const Type *EltTy = IntegerType::get(EltBits * 2);
+    return VectorType::get(EltTy, VTy->getNumElements());
+  }
+
+  /// VectorType::getTruncatedElementVectorType - This static method is like
+  /// getInteger except that the element types are half as wide as the
+  /// elements in the input type.
+  ///
+  static VectorType *getTruncatedElementVectorType(const VectorType *VTy) {
+    unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits();
+    const Type *EltTy = IntegerType::get(EltBits / 2);
+    return VectorType::get(EltTy, VTy->getNumElements());
+  }
+
   /// @brief Return the number of elements in the Vector type.
   inline unsigned getNumElements() const { return NumElements; }
 
diff --git a/include/llvm/Intrinsics.td b/include/llvm/Intrinsics.td
index 154106e..a641caa 100644
--- a/include/llvm/Intrinsics.td
+++ b/include/llvm/Intrinsics.td
@@ -74,6 +74,13 @@ class LLVMMatchType<int num>
   int Number = num;
 }
 
+// Match the type of another intrinsic parameter that is expected to be 
+// an integral vector type, but change the element size to be twice as wide
+// or half as wide as the other type.  This is only useful when the intrinsic
+// is overloaded, so the matched type should be declared as iAny.
+class LLVMExtendedElementVectorType<int num> : LLVMMatchType<num>;
+class LLVMTruncatedElementVectorType<int num> : LLVMMatchType<num>;
+
 def llvm_void_ty       : LLVMType<isVoid>;
 def llvm_anyint_ty     : LLVMType<iAny>;
 def llvm_anyfloat_ty   : LLVMType<fAny>;