[PATCH] D33879: [InstCombine] fold lshr (sext X), C1 --> zext (lshr X, C2)

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 101793.
spatel added a comment.

Patch updated:

1. Use shouldChangeType() to guard against adding a shift of an illegal type.
2. Add/modify tests to show that difference.


https://reviews.llvm.org/D33879

Files:
  lib/Transforms/InstCombine/InstCombineShifts.cpp
  test/Transforms/InstCombine/lshr.ll

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