[all-commits] [llvm/llvm-project] 3bf9b2: [DAG] Allow AssertZExt to scalarize. (#122463)

[David Green via All-commits]

  Branch: refs/heads/release/19.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 3bf9b25b1627ea8610c04b1ca8de4ba9ce432050
      https://github.com/llvm/llvm-project/commit/3bf9b25b1627ea8610c04b1ca8de4ba9ce432050
  Author: David Green <david.green at arm.com>
  Date:   2025-01-14 (Tue, 14 Jan 2025)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
    A llvm/test/CodeGen/ARM/scalarize-assert-zext.ll

  Log Message:
  -----------
  [DAG] Allow AssertZExt to scalarize. (#122463)

With range and undef metadata on a call we can have vector AssertZExt
generated on a target with no vector operations. The AssertZExt needs to
scalarize to a normal `AssertZext tin, ValueType`. I have added
AssertSext too, although I do not have a test case.

Fixes #110374

(cherry picked from commit ab9a80a3ad78f611fd06cd6f7215bd828809310c)



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