[all-commits] [llvm/llvm-project] 192cd6: Add checks before hoisting out in loop pipelining ...

[Fotis Kounelis via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 192cd685129d6f42e8b191e12bddf74ade48c270
      https://github.com/llvm/llvm-project/commit/192cd685129d6f42e8b191e12bddf74ade48c270
  Author: Fotis Kounelis <fotisss17 at gmail.com>
  Date:   2024-06-07 (Fri, 07 Jun 2024)

  Changed paths:
    M mlir/lib/Dialect/SCF/TransformOps/SCFTransformOps.cpp
    M mlir/test/Dialect/SCF/transform-ops.mlir

  Log Message:
  -----------
  Add checks before hoisting out in loop pipelining  (#90872)

Currently, during a loop pipelining transformation, operations may be
hoisted out without any checks on the loop bounds, which leads to
incorrect transformations and unexpected behaviour. The following [issue
](https://github.com/llvm/llvm-project/issues/90870) describes the
problem more extensively, including an example.
The proposed fix adds some check in the loop bounds before and applies
the maximum hoisting.



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