[all-commits] [llvm/llvm-project] 239fcd: [LV] NFCI: Do cost comparison on InstructionCost d...

[sdesmalen-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 239fcda268dc554daf4c2bf20888c72c55518bda
      https://github.com/llvm/llvm-project/commit/239fcda268dc554daf4c2bf20888c72c55518bda
  Author: Sander de Smalen <sander.desmalen at arm.com>
  Date:   2021-07-10 (Sat, 10 Jul 2021)

  Changed paths:
    M llvm/include/llvm/Support/InstructionCost.h
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

  Log Message:
  -----------
  [LV] NFCI: Do cost comparison on InstructionCost directly.

Instead of performing the isMoreProfitable() operation on
InstructionCost::CostTy the operation is performed on InstructionCost
directly, so that it can handle the case where one of the costs is
Invalid.

This patch also changes the CostTy to be int64_t, so that the type is
wide enough to deal with multiplications with e.g. `unsigned MaxTripCount`.

Reviewed By: dmgreen

Differential Revision: https://reviews.llvm.org/D105113