Specifying multiple address spaces for a type in the list of arguments of function

Question

I wrote a function in OpenCL:

void sort(int* array, int size)
{
}

and I need to call the function once over a __private array and once over a __global array. Apparently, it's not allowed in OpenCL to specify multiple address spaces for a type. Therefore, I should duplicate the declaration of function, while they have exactly the same body:

void sort_g(__global int* array, int size)
{
}

void sort_p(__private int* array, int size)
{
}

This is very inefficient for maintaining the code and I am wondering if there is a better way to manage multiple address spaces in OpenCL or not?

P.S.: I don't see why OpenCL doesn't allow multiple address spaces for a type. Compiler could generate multiple instances of the function (one per address space) and use them appropriately once they're called in the kernel.

Answer 1

• 对于OpenCL＆lt; 2.0，这就是语言的设计方式，遗憾的是没有绕过它。

• 对于OpenCL＆gt; = 2.0，通过引入通用地址空间，您的第一段代码可以正常运行。

简而言之，升级到2.0可以解决您的问题（并引入其他细节），否则您将失去运气（您可以将您的功能包装在一个宏中，但是，还可以将宏包裹起来）。