[llvm-dev] Work on DAG Isel for TableGen and compiler

[Paul C. Anagnostopoulos via llvm-dev]

Given that I'm only somewhat up-to-speed on the DAG ISel scheme and not much at all on the Global ISel scheme, I'm tempted to work on the former and then the latter. So I'll look at the CodeGenDAGPatterns messages first. Then I will take a look at Global ISel.

Matt: Can you suggest one or two things about Global ISel that could use some work? I won't get to it quickly, but it will give me something to focus on.


At 11/18/2020 04:17 PM, Thomas Lively wrote:
>Yes, the CodeGenDAGPatterns is exactly right. Try applying the patch below and rebuilding and you'll see what I mean about the error messages ;) That being said, I'm sympathetic to Matt's point about shifting effort to GlobalISel. Maybe it has similar problems you could work on? A nicer development experience would certainly be a good carrot to get me excited to switch over sooner.