[all-commits] [llvm/llvm-project] e573c6: [flang] Add nsw to DO loop parameters (#113854)

[Yusuke MINATO via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e573c6b67eb729a625431121139100bebc61ba1f
      https://github.com/llvm/llvm-project/commit/e573c6b67eb729a625431121139100bebc61ba1f
  Author: Yusuke MINATO <minato.yusuke at fujitsu.com>
  Date:   2024-11-28 (Thu, 28 Nov 2024)

  Changed paths:
    M flang/lib/Lower/Bridge.cpp
    M flang/test/Lower/HLFIR/goto-do-body.f90
    M flang/test/Lower/goto-do-body.f90
    M flang/test/Lower/nsw.f90

  Log Message:
  -----------
  [flang] Add nsw to DO loop parameters (#113854)

nsw is added to DO loop parameters (initial parameters, terminal
parameters, and incrementation parameters).
This can help vectorization in some cases like #110609.

See also the discussion in
https://discourse.llvm.org/t/rfc-add-nsw-flags-to-arithmetic-integer-operations-using-the-option-fno-wrapv/77584/20.



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