[all-commits] [llvm/llvm-project] fd8afa: [VPlan] Use VPUser to manage CondBit

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fd8afa41ebc0e78aff4629e0a3738f608dcbac11
      https://github.com/llvm/llvm-project/commit/fd8afa41ebc0e78aff4629e0a3738f608dcbac11
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2021-02-09 (Tue, 09 Feb 2021)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlan.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/lib/Transforms/Vectorize/VPlanValue.h

  Log Message:
  -----------
  [VPlan] Use VPUser to manage CondBit

VP blocks keep track of a condition, which is a VPValue. This patch
updates VPBlockBase to manage the value using VPUser, so
replaceAllUsesWith properly updates the condition bit as well.

This is required to enable VP2VP transformations and it helps with
simplifying some of the code required to manage condition bits.

Reviewed By: gilr

Differential Revision: https://reviews.llvm.org/D95382