On Saturday, 21 March 2015 at 17:55:09 UTC, Walter Bright wrote:
On 3/20/2015 3:50 AM, "Ola Fosheim =?UTF-8?B?R3LDuHN0YWQi?=
<[email protected]>" wrote:
High level constructs may be cleaner if done right, and
sometimes saves
programmer time, but it will never be as fast on the standard
CPU architectures
we have today. The hardware favours carefully planned
iterative, imperative
approaches. That was true before SIMD and caching, and it is
even more true now.
It's less true for SIMD. To take advantage of SIMD, compilers
have to reverse engineer low level loops into a higher level
construct, then re-compile for SIMD.
No. You have to design so that you don't get dependencies on the
same vector register.
