[PATCH] D31821: Remove redundant copy in recurrences

[Taewook Oh via Phabricator via llvm-commits]

twoh updated this revision to Diff 100886.
twoh added a comment.

Reimplement the feature in peephole optimizer. This patch makes the values in the recurrence cycle to be tied to each other if possible.


https://reviews.llvm.org/D31821

Files:
  lib/CodeGen/PeepholeOptimizer.cpp
  lib/CodeGen/TwoAddressInstructionPass.cpp
  test/CodeGen/MIR/Generic/multiRunPass.mir
  test/CodeGen/X86/fma-do-not-commute.ll
  test/CodeGen/X86/peephole-recurrence.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D31821.100886.patch
Type: text/x-patch
Size: 14874 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20170531/eb3bcc1b/attachment.bin>