> -----Original Message----- > From: Richard Henderson [mailto:r...@redhat.com] > Sent: Wednesday, May 22, 2013 11:30 AM > To: Jakub Jelinek > Cc: Iyer, Balaji V; 'Joseph S. Myers'; 'Aldy Hernandez'; 'gcc-patches' > Subject: Re: [PING]RE: [patch] cilkplus: Array notation for C patch > > 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.
Yes, the vectorlength/safelen can be the entire loop-size. > > > r~
