[all-commits] [llvm/llvm-project] f148d5: [LV]Initial support for safe distance in predicate...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f148d5791bae39fdbe6c97559c82b6c6ab64a100
      https://github.com/llvm/llvm-project/commit/f148d5791bae39fdbe6c97559c82b6c6ab64a100
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-10-18 (Fri, 18 Oct 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.h
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-safe-dep-distance.ll

  Log Message:
  -----------
  [LV]Initial support for safe distance in predicated DataWithEVL vectorization mode.

Enabled initial support for max safe distance in DataWithEVL mode. If
max safe distance is required, need to emit special code:
CMP = icmp ult AVL, MAX_SAFE_DISTANCE
SAFE_AVL = select CMP, AVL, MAX_SAFE_DISTANCE
EVL = call i32 @llvm.experimental.get.vector.length(i64 SAFE_AVL)

while vectorize the loop in DataWithEVL tail folding mode.

Reviewers: fhahn

Reviewed By: fhahn

Pull Request: https://github.com/llvm/llvm-project/pull/102897



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