[PATCH] D141883: [DAG] Do not combine any_ext when we combine and into zext.

[Amaury SECHET via Phabricator via llvm-commits]

deadalnix created this revision.
deadalnix added reviewers: RKSimon, craig.topper, efriedma, spatel, lebedev.ri.
Herald added subscribers: StephenFan, ecnelises, pengfei, hiraditya.
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This transofrm loses information that can be useful for other transforms.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141883

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/X86/clear_upper_vector_element_bits.ll
  llvm/test/CodeGen/X86/illegal-bitfield-loadstore.ll
  llvm/test/CodeGen/X86/known-signbits-vector.ll
  llvm/test/CodeGen/X86/ushl_sat.ll
  llvm/test/CodeGen/X86/ushl_sat_vec.ll

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