> Hi All, > > Is it possible to define UNITS_PER_SIMD_WORD as a global variable and > to set this varibale using a pragma (even once for a compilation) and > that way to be able to compile one file with UNITS_PER_SIMD_WORD = 8 > and another file with UNITS_PER_SIMD_WORD = 16?
No. This is an internal value that is a property of the vector ISA you're targeting. AFAIK there's only one supported target that supports variable length vectors (ARM NEON), which allows selecting between doubleword and quadword vectors via a target specific commandline option. Idealy you wouldn't need this at all, but I don;t believe the vectorizer is capable of handling this. Paul
