On 16 January 2012 18:59, Walter Bright <newshou...@digitalmars.com> wrote: > On 1/16/2012 8:48 AM, Andrei Alexandrescu wrote: >> >> My point was that the version using float arrays should opportunistically >> use >> hardware ops whenever possible. > > > Yes, you're right. The compiler can opportunistically convert a number of > vector operations on static arrays to the SIMD instructions. > > Now that the basics are there, there are many, many opportunities to improve > the code generation. Even for things like: > > int i,j; > i *= 3; > foo(); > j *= 3; > > the two multiplies can be combined. Also, if operations on a particular > integer variable are a subset that is supported by SIMD, that variable could > be enregistered in an XMM register, instead of a GP register. > > But don't worry, I'm not planning on working on that at the moment :-)
Leave that sort of optimisation for the backend to handle please. ;-) -- Iain Buclaw *(p < e ? p++ : p) = (c & 0x0f) + '0';
