Information on Loop Blocking

[Richard Biener]

On January 3, 2020 2:04:20 AM GMT+01:00, Gary Oblock <goblock@marvell.com> wrote:
>One of the engineers here at Marvel was experimenting, at the user
>level, with GCC in a failed attempt
>to get loop blocking to do loop blocking. Here's basically his
>question.
>
>  Exactly how does loop blocking work in GCC?
>
>I know this must involve the polyhedral optimization code so an
>explanation might get a little ugly
>but he's very bright fellow and can cope with it.

Loop blocking is only done from polyhedral optimizations and it is done always with a fixed block size (there's a param) when dependence analysis allows it. 

Richard. 

>Thank,
>
>Gary Oblock