[all-commits] [llvm/llvm-project] e8ade4: [LegalizeType] When LegalizeType procedure widens ...

[llvmbot via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: e8ade4569b7b5343ae8d4d7c9d83706eca0e8e90
      https://github.com/llvm/llvm-project/commit/e8ade4569b7b5343ae8d4d7c9d83706eca0e8e90
  Author: Bing1 Yu <bing1.yu at intel.com>
  Date:   2020-12-22 (Tue, 22 Dec 2020)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
    M llvm/test/CodeGen/X86/masked_gather_scatter_widen.ll

  Log Message:
  -----------
  [LegalizeType] When LegalizeType procedure widens a masked_gather, set MemoryType's EltNum equal to Result's EltNum

When LegalizeType procedure widens a masked_gather, set MemoryType's EltNum equal to Result's EltNum.

As I mentioned in https://reviews.llvm.org/D91092, in previous code, If we have a v17i32's masked_gather in avx512, we widen it to a v32i32's masked_gather with a v17i32's MemoryType. When the SplitVecRes_MGATHER process this v32i32's masked_gather, GetSplitDestVTs will assert fail since what you are going to split is v17i32.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D93610