[PATCH] D37163: [LICM] sink through non-trivially replicable PHI

[Jun Bum Lim via Phabricator via llvm-commits]

junbuml created this revision.

The current LICM allows sinking an instruction only when it is exposed to exit
blocks through a trivially replacable PHI of which all incoming values are the
same instruction. This change enhance LICM to sink a sinkable instruction
through non-trivially replacable PHIs by spliting predecessors of loop
exits.


https://reviews.llvm.org/D37163

Files:
  lib/Transforms/Scalar/LICM.cpp
  test/Transforms/LICM/sinking.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D37163.112738.patch
Type: text/x-patch
Size: 7985 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20170825/30ffaed8/attachment.bin>