[PATCH] D66199: [docs] loop pragmas

[Sjoerd Meijer via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG52bfa73af841: [docs] loop pragmas: options implying transformations (authored by SjoerdMeijer).
Herald added a project: clang.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66199/new/

https://reviews.llvm.org/D66199

Files:
  clang/docs/LanguageExtensions.rst


Index: clang/docs/LanguageExtensions.rst
===================================================================
--- clang/docs/LanguageExtensions.rst
+++ clang/docs/LanguageExtensions.rst
@@ -3027,6 +3027,14 @@
 distribution. Loop hints can be specified before any loop and will be ignored if
 the optimization is not safe to apply.
 
+There are loop hints that control transformations (e.g. vectorization, loop
+unrolling) and there are loop hints that set transformation options (e.g.
+``vectorize_width``, ``unroll_count``).  Pragmas setting transformation options
+imply the transformation is enabled, as if it was enabled via the corresponding
+transformation pragma (e.g. ``vectorize(enable)``). If the transformation is
+disabled  (e.g. ``vectorize(disable)``), that takes precedence over
+transformations option pragmas implying that transformation.
+
 Vectorization, Interleaving, and Predication
 --------------------------------------------
 


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