[all-commits] [llvm/llvm-project] 6e7eeb: [GVN] Fix VNCoercion for Scalable Vector.

[huihzhang via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 6e7eeb44b305391f736437d050729b09c02fda0f
      https://github.com/llvm/llvm-project/commit/6e7eeb44b305391f736437d050729b09c02fda0f
  Author: Huihui Zhang <huihuiz at quicinc.com>
  Date:   2020-04-10 (Fri, 10 Apr 2020)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
    M llvm/lib/Transforms/Utils/VNCoercion.cpp
    A llvm/test/Transforms/GVN/vscale.ll

  Log Message:
  -----------
  [GVN] Fix VNCoercion for Scalable Vector.

Summary:
For VNCoercion, skip scalable vector when analysis rely on fixed size,
otherwise call TypeSize::getFixedSize() explicitly.

Add unit tests to check funtionality of GVN load elimination for scalable type.

Reviewers: sdesmalen, efriedma, spatel, fhahn, reames, apazos, ctetreau

Reviewed By: efriedma

Subscribers: bjope, hiraditya, jfb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D76944