[PATCH] D60619: New pass to produce more easily-read IR.

[Arnt Gulbrandsen via Phabricator via llvm-commits]

arnt created this revision.
arnt added reviewers: jyknight, MaskRay, mtrofin, fhahn, craig.topper.
Herald added subscribers: llvm-commits, hiraditya, mgorny.
Herald added a project: LLVM.
arnt added a comment.

This patch's reviewer selection algorithm: Those who have changed two or more files in the same directory recently. I hope you don't mind.


This doesn't change the compiled output, merely reorders the basic blocks.
Frontends tend to create basic blocks in the order they discover that they
need the blocks, which is often not a great order for reading and
understanding the IR output.

The new pass is never called by default, but can be invoked with opt:

  opt -S -passes improve-reading-order somefile.bc | less


Repository:
  rL LLVM

https://reviews.llvm.org/D60619

Files:
  llvm/include/llvm/Transforms/Utils/ImproveReadingOrder.h
  llvm/lib/Passes/PassBuilder.cpp
  llvm/lib/Passes/PassRegistry.def
  llvm/lib/Transforms/Utils/CMakeLists.txt
  llvm/lib/Transforms/Utils/ImproveReadingOrder.cpp
  llvm/test/Transforms/Util/improve-reading-order.ll

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