[all-commits] [llvm/llvm-project] d2e2fc: [ConstantFold][SVE] Fix constant folding for scala...

[huihzhang via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: d2e2fc450e7a25ba71ffec2914262bfd85b8c5bd
      https://github.com/llvm/llvm-project/commit/d2e2fc450e7a25ba71ffec2914262bfd85b8c5bd
  Author: Huihui Zhang <huihuiz at quicinc.com>
  Date:   2020-01-29 (Wed, 29 Jan 2020)

  Changed paths:
    M llvm/lib/IR/ConstantFold.cpp
    A llvm/test/Analysis/ConstantFolding/vscale.ll

  Log Message:
  -----------
  [ConstantFold][SVE] Fix constant folding for scalable vector binary operations.

Summary:
Scalable vector should not be evaluated element by element.
Add support to handle scalable vector UndefValue.

Reviewers: sdesmalen, huntergr, spatel, lebedev.ri, apazos, efriedma, willlovett

Reviewed By: efriedma

Subscribers: tschuett, hiraditya, rkruppe, psnobl, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D71445