[PATCH] D16207: [Reassociate] : Make sure when we are optimizing an instruction, it's operands have already been canonicalized

[Aditya Nandakumar via llvm-commits]

aditya_nandakumar created this revision.
aditya_nandakumar added reviewers: majnemer, mcrosier, echristo, qcolombet.
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This is a continuation (I couldn't update the phab review) from http://reviews.llvm.org/D6995 (Original Patch by Mehdi)

Before we Optimize instruction, make sure all instructions that are in the redo list and are before the current instruction have been optimized.

Repository:
  rL LLVM

http://reviews.llvm.org/D16207

Files:
  lib/Transforms/Scalar/Reassociate.cpp
  test/Transforms/Reassociate/prev_insts_canonicalized.ll
  test/Transforms/Reassociate/reassoc-intermediate-fnegs.ll
  test/Transforms/Reassociate/xor_reassoc.ll

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