Hi, Is there any reason to enforce "x must be a power of 2" in __attribute__((vector_size(x)))? I want to use this attribute in my source code to simplify coding (instead of utilizing SIMD instructions, normally). Someone may argue that I should use std::valarray but it is stupidly slow. Now with this restriction on size value I may have to write something like std::valarray but w/o dynamic allocation. -- Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> School of Aerospace Science and Technology, Xidian University