[all-commits] [llvm/llvm-project] 7c9008: [SCF][PIPELINE] Handle the case when values from t...

[pawelszczerbuk via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7c9008115a2a24788f07bb476fb28dcf5e661ae4
      https://github.com/llvm/llvm-project/commit/7c9008115a2a24788f07bb476fb28dcf5e661ae4
  Author: pawelszczerbuk <153013546+pawelszczerbuk at users.noreply.github.com>
  Date:   2024-08-23 (Fri, 23 Aug 2024)

  Changed paths:
    M mlir/lib/Dialect/SCF/Transforms/LoopPipelining.cpp
    M mlir/test/Dialect/SCF/loop-pipelining.mlir

  Log Message:
  -----------
  [SCF][PIPELINE] Handle the case when values from the peeled prologue may escape out of the loop (#105755)

Previously the values in the peeled prologue that weren't treated with
the `predicateFn` were passed to the loop body without any other
predication. If those values are later used outside of the loop body,
they may be incorrect if the num iterations is smaller than num stages -
1. We need similar masking for those, as is done in the main loop body,
using already existing predicates.



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