[PATCH] D26391: [JumpThreading] Unfold selects that depend on the same condition

[Pablo Barrio via llvm-commits]

pbarrio created this revision.
pbarrio added reviewers: sebpop, rengolin.
pbarrio added subscribers: llvm-commits, jmolloy.

These are good candidates for jump threading. This enables later opts
(such as InstCombine) to combine instructions from the selects with
instructions out of the selects. SimplifyCFG will fold the select
again if unfolding wasn't worth it.

Patch by James Molloy and Pablo Barrio.


https://reviews.llvm.org/D26391

Files:
  include/llvm/Transforms/Scalar/JumpThreading.h
  lib/Transforms/Scalar/JumpThreading.cpp
  test/Transforms/JumpThreading/unfold-selects-same-cond.ll

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