[all-commits] [llvm/llvm-project] d452e6: [flang][OpenMP] Enable tiling (#143715)

[Jan Leyonberg via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d452e67ee7b5d17aa040f71d8997abc1a47750e4
      https://github.com/llvm/llvm-project/commit/d452e67ee7b5d17aa040f71d8997abc1a47750e4
  Author: Jan Leyonberg <jan_sjodin at yahoo.com>
  Date:   2025-09-10 (Wed, 10 Sep 2025)

  Changed paths:
    M flang/include/flang/Lower/OpenMP.h
    M flang/lib/Lower/OpenMP/ClauseProcessor.cpp
    M flang/lib/Lower/OpenMP/ClauseProcessor.h
    M flang/lib/Lower/OpenMP/OpenMP.cpp
    M flang/lib/Lower/OpenMP/Utils.cpp
    M flang/lib/Lower/OpenMP/Utils.h
    M flang/lib/Semantics/resolve-directives.cpp
    R flang/test/Lower/OpenMP/nested-loop-transformation-construct01.f90
    M flang/test/Lower/OpenMP/parallel-wsloop-lastpriv.f90
    M flang/test/Lower/OpenMP/simd.f90
    M flang/test/Lower/OpenMP/wsloop-collapse.f90
    M flang/test/Lower/OpenMP/wsloop-variable.f90
    A flang/test/Parser/OpenMP/do-tile-size.f90
    M flang/test/Semantics/OpenMP/do-collapse.f90
    M flang/test/Semantics/OpenMP/do-concurrent-collapse.f90
    M mlir/include/mlir/Dialect/OpenMP/OpenMPClauseOperands.h
    M mlir/include/mlir/Dialect/OpenMP/OpenMPClauses.td
    M mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
    M mlir/lib/Conversion/SCFToOpenMP/SCFToOpenMP.cpp
    M mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
    M mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
    M mlir/test/Conversion/SCFToOpenMP/scf-to-openmp.mlir
    M mlir/test/Dialect/OpenMP/invalid.mlir
    M mlir/test/Dialect/OpenMP/ops.mlir
    M mlir/test/Target/LLVMIR/omptarget-wsloop-collapsed.mlir
    M mlir/test/Target/LLVMIR/openmp-llvm.mlir

  Log Message:
  -----------
  [flang][OpenMP] Enable tiling (#143715)

This patch enables tiling in flang. In MLIR tiling is handled by
changing the the omp.loop_nest op to be able to represent both collapse
and tiling, so the flang front-end will combine the nested constructs into
a single MLIR op. The MLIR->LLVM-IR lowering of the LoopNestOp is
enhanced to first do the tiling if present, then collapse.



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