[all-commits] [llvm/llvm-project] 52d2d8: [Flang][OpenMP] Add lowering support for DO SIMD (...

[Sergio Afonso via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 52d2d8200807357a582e089eaa95692b2c77da2e
      https://github.com/llvm/llvm-project/commit/52d2d8200807357a582e089eaa95692b2c77da2e
  Author: Sergio Afonso <safonsof at amd.com>
  Date:   2024-07-09 (Tue, 09 Jul 2024)

  Changed paths:
    M flang/lib/Lower/OpenMP/OpenMP.cpp
    R flang/test/Lower/OpenMP/Todo/omp-do-simd-aligned.f90
    M flang/test/Lower/OpenMP/Todo/omp-do-simd-linear.f90
    R flang/test/Lower/OpenMP/Todo/omp-do-simd-safelen.f90
    R flang/test/Lower/OpenMP/Todo/omp-do-simd-simdlen.f90
    M flang/test/Lower/OpenMP/if-clause.f90
    M flang/test/Lower/OpenMP/loop-compound.f90
    A flang/test/Lower/OpenMP/wsloop-schedule.f90
    M flang/test/Lower/OpenMP/wsloop-simd.f90
    M mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp

  Log Message:
  -----------
  [Flang][OpenMP] Add lowering support for DO SIMD (#97718)

This patch adds support for lowering 'DO SIMD' constructs to MLIR. SIMD
information is now stored in an `omp.simd` loop wrapper, which is
currently ignored by the OpenMP dialect to LLVM IR translation stage.

The end result is that runtime behavior of compiled 'DO SIMD' constructs
does not change after this patch, so 'DO SIMD' still runs like 'DO'
(i.e. SIMD width = 1). However, all of the required information is now
present in the resulting MLIR representation.

To avoid confusion, the previous wsloop-simd.f90 lit test is renamed to
wsloop-schedule.f90 and a new wsloop-simd.f90 test is created to check
the addition of SIMD clauses to the `omp.simd` operation produced when a
'DO SIMD' construct is lowered to MLIR.



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