[PATCH] D43338: [SelectionDAG] ComputeNumSignBits - add support for SMIN+SMAX clamp patterns

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 134812.
RKSimon added a comment.

Rebased, and dropped remnants of UMIN/UMAX support.


Repository:
  rL LLVM

https://reviews.llvm.org/D43338

Files:
  lib/CodeGen/SelectionDAG/SelectionDAG.cpp
  test/CodeGen/X86/i64-to-float.ll
  test/CodeGen/X86/vector-trunc-packus.ll
  test/CodeGen/X86/vector-trunc-ssat.ll

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