[all-commits] [llvm/llvm-project] ef520c: Revert "[RISCV] Recursively split concat_vector in...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ef520ca6b18cf65fc7a13fcad1534f1d70332a88
      https://github.com/llvm/llvm-project/commit/ef520ca6b18cf65fc7a13fcad1534f1d70332a88
  Author: Luke Lau <luke at igalia.com>
  Date:   2024-03-19 (Tue, 19 Mar 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/test/CodeGen/RISCV/rvv/active_lane_mask.ll
    M llvm/test/CodeGen/RISCV/rvv/combine-store-extract-crash.ll
    M llvm/test/CodeGen/RISCV/rvv/extract-subvector.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-shuffle-concat.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-strided-load-combine.ll
    M llvm/test/CodeGen/RISCV/rvv/fpclamptosat_vec.ll
    M llvm/test/CodeGen/RISCV/rvv/mgather-sdnode.ll
    M llvm/test/CodeGen/RISCV/rvv/pr63596.ll

  Log Message:
  -----------
  Revert "[RISCV] Recursively split concat_vector into smaller LMULs (#83035)"

This reverts commit c59129a7c79448837d665de8f2743ad4b14666f6.

This causes regressions in some x264 workloads like pixel_var_8x8 due to it
interfering with the strided load combine. Reverting so I can try to rework
it as a lowering instead.



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