[PATCH] D23007: [DAGCombiner] Better support for shifting large value type by constants

[Simon Pilgrim via llvm-commits]

RKSimon updated this revision to Diff 67349.
RKSimon added a comment.

Updated based on Tim's feedback. Added better support for shift overflow.

I took the easy way out and didn't add support for  i18446744073709551616 ;-)


Repository:
  rL LLVM

https://reviews.llvm.org/D23007

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/X86/shift-i128.ll

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