[all-commits] [llvm/llvm-project] e5bb94: Bug fixes for ISelLowering for HVX (#164416)

[Fateme Hosseini via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e5bb946d1818fb545b36c1b84abf3ab46f4faa5b
      https://github.com/llvm/llvm-project/commit/e5bb946d1818fb545b36c1b84abf3ab46f4faa5b
  Author: Fateme Hosseini <quic_fhossein at quicinc.com>
  Date:   2025-10-28 (Tue, 28 Oct 2025)

  Changed paths:
    M llvm/lib/Target/Hexagon/HexagonISelLoweringHVX.cpp
    A llvm/test/CodeGen/Hexagon/inst_masked_store_bug1.ll

  Log Message:
  -----------
  Bug fixes for ISelLowering for HVX (#164416)

1. createHvxPrefixPred was computing an invalid byte count for small
predicate types, leading to a crash during instruction selection.
2. HexagonTargetLowering::SplitHvxMemOp assumed the memory vector type
is always simple. This patch adds a guard to avoid processing non-simple
vector types, which can lead to failure.

Patch By:
Fateme Hosseini

Co-authored-by: pavani karveti <quic_pkarveti at quicinc.com>
Co-authored-by: Sergei Larin <slarin at quicinc.com>
Co-authored-by: Pavani Karveti <pkarveti at qti.qualcomm.com>



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