[all-commits] [llvm/llvm-project] 8e4fb4: [IA] Remove recursive [de]interleaving support (#1...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8e4fb4beada4ca34a2775512964ebe478967049d
      https://github.com/llvm/llvm-project/commit/8e4fb4beada4ca34a2775512964ebe478967049d
  Author: Luke Lau <luke at igalia.com>
  Date:   2025-06-25 (Wed, 25 Jun 2025)

  Changed paths:
    M llvm/lib/CodeGen/InterleavedAccessPass.cpp
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-deinterleave-load.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-interleave-store.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-interleaved-access.ll
    M llvm/test/CodeGen/RISCV/rvv/vector-deinterleave-load.ll
    M llvm/test/CodeGen/RISCV/rvv/vector-interleave-store.ll
    M llvm/test/CodeGen/RISCV/rvv/vp-vector-interleaved-access.ll
    M llvm/test/Transforms/InterleavedAccess/AArch64/sve-deinterleave4.ll
    M llvm/test/Transforms/InterleavedAccess/AArch64/sve-interleave4.ll
    M llvm/test/Transforms/InterleavedAccess/RISCV/interleaved-accesses.ll

  Log Message:
  -----------
  [IA] Remove recursive [de]interleaving support (#143875)

Now that the loop vectorizer emits just a single
llvm.vector.[de]interleaveN intrinsic after #141865, we can remove the
need to recognise recursively [de]interleaved intrinsics.

No in-tree target currently has instructions to emit an interleaved
access with a factor > 8, and I'm not aware of any other passes that
will emit recursive interleave patterns, so this code is effectively
dead.

Some tests have been converted from the recursive form to a single
intrinsic, and some others were deleted that are no longer needed, e.g.
to do with the recursive tree.

This closes off the work started in #139893.



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