[all-commits] [llvm/llvm-project] 86a207: [mlir][scf] Add parallelLoopUnrollByFactors() (#16...

[fabrizio-indirli via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 86a2073b5bf5f0b44573b8f7e600040a8cdc8bc2
      https://github.com/llvm/llvm-project/commit/86a2073b5bf5f0b44573b8f7e600040a8cdc8bc2
  Author: fabrizio-indirli <fabrizio.indirli at arm.com>
  Date:   2025-10-24 (Fri, 24 Oct 2025)

  Changed paths:
    M mlir/include/mlir/Dialect/SCF/Utils/Utils.h
    M mlir/lib/Dialect/SCF/IR/SCF.cpp
    M mlir/lib/Dialect/SCF/Utils/Utils.cpp
    A mlir/test/Dialect/SCF/parallel-loop-unroll.mlir
    M mlir/test/lib/Dialect/SCF/CMakeLists.txt
    A mlir/test/lib/Dialect/SCF/TestParallelLoopUnrolling.cpp
    M mlir/tools/mlir-opt/mlir-opt.cpp

  Log Message:
  -----------
  [mlir][scf] Add parallelLoopUnrollByFactors() (#163806)

- In the SCF Utils, add the `parallelLoopUnrollByFactors()` function
  to unroll scf::ParallelOp loops according to the specified unroll factors
- Add a test pass "TestParallelLoopUnrolling" and the related LIT test
- Expose `mlir::parallelLoopUnrollByFactors()`, `mlir::generateUnrolledLoop()`,
  and `mlir::scf::computeUbMinusLb()` functions in the
  mlir/Dialect/SCF/Utils/Utils.h header to make them available 
  to other passes.
- In `mlir::generateUnrolledLoop()`, add also an optional 
  `IRMapping *clonedToSrcOpsMap` argument to map the new cloned 
  operations to their original ones.
  In the function body, change the default `AnnotateFn` type to 
  `static const` to silence potential warnings about dangling references 
   when a function_ref is assigned  to a variable with automatic storage.

Signed-off-by: Fabrizio Indirli <Fabrizio.Indirli at arm.com>



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