[PATCH] D55710: add pragmas to control Software Pipelining optimisation

Aaron Ballman via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Thu Dec 20 05:28:39 PST 2018

aaron.ballman added inline comments.

Comment at: include/clang/Basic/AttrDocs.td:2673
+Check `Software pipelining`, `Modulo scheduling` to get more details on optimisation.
"Check" -- check where? Perhaps "Search for" but I still don't think that's very satisfying for our documentation as there's no telling what users will find or how it relates (if at all) to this feature.

on optimisation -> on this optimization

I find this sentence doesn't really direct me to much of value (research presentations and class lectures, mostly), so I'd rather see the important details spelled out in our docs so that users don't have to guess as much.

Comment at: include/clang/Basic/AttrDocs.td:2677-2678
+`language extensions
+for further details, including limitations of the pipeline hints.
+  }];
There is nothing in the linked documentation that describes pipeline initiation intervals, so I'm still left wondering how to pick a value for the attribute argument. I think the docs need a bit more detail for what that value means and how it impacts the user's code.



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