On 2013-05-21 23:15, Jakub Jelinek wrote:
Furthermore, do you want to generate just normal loop out of it, or shouldn't we generate a #pragma omp simd loop out of it instead? Haven't read the spec if array notation guarantees lack of forward/backward loop dependencies and what are the restrictions on the calls you can do inside of array notation. Perhaps the lowering to normal vs. simd loop could depend on whether all called functions in the expression are elemental.
The only overlap allowed is exact, i.e. a[0:5] = a[0:5] + b[1:5], but not a[0:5] = a[1:5] + b[1:5]. So, yes, I believe that safelen is essentially unlimited. r~
