[all-commits] [llvm/llvm-project] 40abeb: [NFC][InstructionCost] Change LoopVectorizationCos...

[david-arm via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 40abeb11f4584e8a07163d6c7e24011ac45f104c
      https://github.com/llvm/llvm-project/commit/40abeb11f4584e8a07163d6c7e24011ac45f104c
  Author: David Sherwood <david.sherwood at arm.com>
  Date:   2021-01-11 (Mon, 11 Jan 2021)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

  Log Message:
  -----------
  [NFC][InstructionCost] Change LoopVectorizationCostModel::getInstructionCost to return InstructionCost

This patch is part of a series of patches that migrate integer
instruction costs to use InstructionCost. In the function
selectVectorizationFactor I have simply asserted that the cost
is valid and extracted the value as is. In future we expect
to encounter invalid costs, but we should filter out those
vectorization factors that lead to such invalid costs.

See this patch for the introduction of the type: https://reviews.llvm.org/D91174
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2020-November/146408.html

Differential Revision: https://reviews.llvm.org/D92178