[PATCH] D110561: [AArch64] Alter arith-cbz-fusion to fuse between pairs register instructions

Matthias Braun via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Sep 28 10:19:10 PDT 2021


MatzeB added a comment.

In D110561#3027811 <https://reviews.llvm.org/D110561#3027811>, @dmgreen wrote:

> This code adds an SDep::Artificial dependency between the instruction and ExitSU:
> https://github.com/llvm/llvm-project/blob/20c02807333a47000879e0f673cdf2d6b07148dd/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp#L876

Have you tried what happens when we ignore `Dep.isArtificial()` in MacroFusion.cpp?


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https://reviews.llvm.org/D110561



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