search for: d46870

...That's not what you, and probably others are doing, > so if you want to make those Begin/EndGroup post-RA specific, it's > fine with me. Or you could be more ambitious and introduce the concept > of a post-RA specific processor resource. > This patch: https://reviews.llvm.org/D46870, put those checks under a post-RA flag, and also covers the NumUOps / IssueWidth the same way. /Jonas > -Andy > >> >>> Sorry, I don't have time to draw diagrams and tables. Hopefully you >>> can makes sense of my long-form rambling. >> Yes, very helpful t...

> On May 14, 2018, at 11:10 AM, Jonas Paulsson <paulsson at linux.vnet.ibm.com> wrote: > > Hi Andrew, > > Thank you very much for the most helpful explanations! Many things could go in as comments, if you ask me - for example: > > --- >> The LLVM machine model is an abstract machine. > >> The abstract pipeline is built around the notion of an

Hi Andrew, Thank you very much for the most helpful explanations! Many things could go in as comments, if you ask me - for example: --- > The LLVM machine model is an abstract machine. > The abstract pipeline is built around the notion of an "issue point". This is merely a reference point for counting machine cycles. > > > IssueWidth is meant to be a hard in-order