[all-commits] [llvm/llvm-project] 8647a7: [LV] VPValues for memory operation pointers (NFCI)

[Gil Rapaport via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 8647a72c4a52e0386c0397ce3fbd38121c18b873
      https://github.com/llvm/llvm-project/commit/8647a72c4a52e0386c0397ce3fbd38121c18b873
  Author: Gil Rapaport <gil.rapaport at intel.com>
  Date:   2020-01-10 (Fri, 10 Jan 2020)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp

  Log Message:
  -----------
  [LV] VPValues for memory operation pointers (NFCI)

Memory instruction widening recipes use the pointer operand of their load/store
ingredient for generating the needed GEPs, making it difficult to feed these
recipes with pointers based on other ingredients or none at all.
This patch modifies these recipes to use a VPValue for the pointer instead, in
order to reduce ingredient def-use usage by ILV as a step towards full
VPlan-based def-use relations. The recipes are constructed with VPValues bound
to these ingredients, maintaining current behavior.

Differential revision: https://reviews.llvm.org/D70865