make addCarry and subBorrow from SPIR-V follow our naming convention

Author: devsh

include/nbl/builtin/hlsl/bda/__ptr.hlsl

@@ -27,26 +27,24 @@ struct __ptr
     }
 
     // in non-64bit mode we only support "small" arithmetic on pointers (just offsets no arithmetic on pointers)
-#if 0 // TODO: @Przemog1
     __ptr operator+(uint32_t i)
     {
         i *= sizeof(T);
         uint32_t2 newAddr = addr;
-        uint32_t2 diff = spirv::OpIAddCarry(addr[0],i);
-        newAddr[0] = diff[0];
-        newAddr[1] += diff[1];
+        AddCarryOutput<T> lsbAddRes = spirv::addCarry<uint32_t>(addr[0],i);
+        newAddr[0] = lsbAddRes.result;
+        newAddr[1] += lsbAddRes.carry;
         return __ptr::create(newAddr);
     }
     __ptr operator-(uint32_t i)
     {
         i *= sizeof(T);
         uint32_t2 newAddr = addr;
-        uint32_t2 diff = spirv::OpISubBorrow(addr[0],i);
-        newAddr[0] = diff[0];
-        newAddr[1] -= diff[1];
+        AddCarryOutput<T> lsbSubRes = spirv::subBorrow<uint32_t>(addr[0],i);
+        newAddr[0] = lsbSubRes.result;
+        newAddr[1] -= lsbSubRes.carry;
         return __ptr::create(newAddr);
     }
-#endif
 
     template< uint64_t alignment=alignment_of_v<T> >
     __ref<T,alignment,false> deref()

include/nbl/builtin/hlsl/spirv_intrinsics/core.hlsl

@@ -329,11 +329,11 @@ enable_if_t<is_vector_v<BooleanVector>&& is_same_v<typename vector_traits<Boolea
 
 template<typename T NBL_FUNC_REQUIRES(concepts::UnsignedIntegral<T>)
 [[vk::ext_instruction(spv::OpIAddCarry)]]
-AddCarryOutput<T> AddCarry(T operand1, T operand2);
+AddCarryOutput<T> addCarry(T operand1, T operand2);
 
 template<typename T NBL_FUNC_REQUIRES(concepts::UnsignedIntegral<T>)
 [[vk::ext_instruction(spv::OpISubBorrow)]]
-SubBorrowOutput<T> SubBorrow(T operand1, T operand2);
+SubBorrowOutput<T> subBorrow(T operand1, T operand2);
 
 }