[PATCH] D28489: [CodeGen] Generalize MacroFusion for any instructions pair

[Andrew Trick via Phabricator via llvm-commits]

atrick added a comment.

Would it make sense to have a TII.mayFuseWithPrecedingInstr() to avoid testing all DAG edges? The DAG is quadratic, but this a rare opportunity.


Repository:
  rL LLVM

https://reviews.llvm.org/D28489