[all-commits] [llvm/llvm-project] 135ddf: [AArch64][SVE] Add basic support for `@llvm.masked...

[Benjamin Maxwell via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 135ddf1e8efef7c8ac9b01caa660210e3ca12327
      https://github.com/llvm/llvm-project/commit/135ddf1e8efef7c8ac9b01caa660210e3ca12327
  Author: Benjamin Maxwell <benjamin.maxwell at arm.com>
  Date:   2025-11-28 (Fri, 28 Nov 2025)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.h
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h
    A llvm/test/CodeGen/AArch64/sve-masked-compressstore-sve2p2.ll
    A llvm/test/CodeGen/AArch64/sve-masked-compressstore.ll

  Log Message:
  -----------
  [AArch64][SVE] Add basic support for `@llvm.masked.compressstore` (#168350)

This patch adds SVE support for the `masked.compressstore` intrinsic via
the existing `VECTOR_COMPRESS` lowering and compressing the store mask
via `VECREDUCE_ADD`.

Currently, only `nxv4[i32|f32]` and `nxv2[i64|f64]` are directly
supported, with other types promoted to these, where possible.

This is done in preparation for LV support of this intrinsic, which is
currently being worked on in #140723.



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