[all-commits] [llvm/llvm-project] 4a6ebc: [MachinePipeliner] Fix a bug in Output Dependency ...

[lsaba via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 4a6ebc03ba89340e119b3c2c6b8a6c721fff5fd5
      https://github.com/llvm/llvm-project/commit/4a6ebc03ba89340e119b3c2c6b8a6c721fff5fd5
  Author: Lama <lama.saba at intel.com>
  Date:   2020-03-24 (Tue, 24 Mar 2020)

  Changed paths:
    M llvm/lib/CodeGen/MachinePipeliner.cpp

  Log Message:
  -----------
  [MachinePipeliner] Fix a bug in Output Dependency chains

The current implementation collects all Preds/Succs of a Dep of kind Output, creating a long chain and subsequently a schedule with an unnecessarily large II.
Was this done on purpose for a reason I'm missing?

Reviewed By: bcahoon

Differential Revision: https://reviews.llvm.org/D75424