[PATCH] D24301: [ConstantFold] Teach how to fold a bitcast of a constant vector with some undef elements.

[Andrea Di Biagio via llvm-commits]

andreadb updated this revision to Diff 71159.
andreadb added a comment.

Address Simon's review comment.

Patch rebased after revision 281332.


https://reviews.llvm.org/D24301

Files:
  lib/Analysis/ConstantFolding.cpp
  test/Transforms/InstCombine/x86-sse4a.ll
  test/Transforms/InstSimplify/bitcast-vector-fold.ll

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