diff --git a/Eigen/src/Core/arch/NEON/TypeCasting.h b/Eigen/src/Core/arch/NEON/TypeCasting.h
index d85be48ef..68d24dc5c 100644
--- a/Eigen/src/Core/arch/NEON/TypeCasting.h
+++ b/Eigen/src/Core/arch/NEON/TypeCasting.h
@@ -14,128 +14,28 @@ namespace Eigen {
 
 namespace internal {
 
-template<> struct type_casting_traits<float,numext::int8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<float,numext::uint8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<float,numext::int16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<float,numext::uint16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<float,numext::int32_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<float,numext::uint32_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<float,numext::int64_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<float,numext::uint64_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int8_t,float>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::int8_t,numext::uint8_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int8_t,numext::int16_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int8_t,numext::uint16_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int8_t,numext::int32_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int8_t,numext::uint32_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint8_t,float>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::uint8_t,numext::int8_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint8_t,numext::int16_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint8_t,numext::uint16_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint8_t,numext::int32_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint8_t,numext::uint32_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int16_t,float>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int16_t,numext::int8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int16_t,numext::uint8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::int16_t,numext::uint16_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int16_t,numext::int32_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int16_t,numext::uint32_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int16_t,numext::int64_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int16_t,numext::uint64_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint16_t,float>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint16_t,numext::int8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint16_t,numext::uint8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::uint16_t,numext::int16_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint16_t,numext::int32_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint16_t,numext::uint32_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint16_t,numext::int64_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint16_t,numext::uint64_t>
-{ enum { VectorizedCast = 0, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::int32_t,float>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int32_t,numext::int8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int32_t,numext::uint8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int32_t,numext::int16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int32_t,numext::uint16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::int32_t,numext::uint32_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int32_t,numext::int64_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int32_t,numext::uint64_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::uint32_t,float>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint32_t,numext::int8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint32_t,numext::uint8_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint32_t,numext::int16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint32_t,numext::uint16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::uint32_t,numext::int32_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint32_t,numext::int64_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint32_t,numext::uint64_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int64_t,float>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int64_t,numext::int16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int64_t,numext::uint16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::int64_t,numext::uint32_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::int64_t,numext::uint64_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint64_t,float>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint64_t,numext::int16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint64_t,numext::uint16_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
-template<> struct type_casting_traits<numext::uint64_t,numext::int32_t>
-{ enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };
 template<> struct type_casting_traits<numext::uint64_t,numext::int64_t>
 { enum { VectorizedCast = 1, SrcCoeffRatio = 1, TgtCoeffRatio = 1 }; };