[PATCH] D10857: Update documentation for unroll pragmas on loops with runtime trip counts

[Mark Heffernan]

meheff updated this revision to Diff 29425.
meheff added a comment.

Removing the llvm-specific flag sounds good to me.  Updated in diff.


http://reviews.llvm.org/D10857

Files:
  docs/LanguageExtensions.rst

Index: docs/LanguageExtensions.rst
===================================================================
--- docs/LanguageExtensions.rst
+++ docs/LanguageExtensions.rst
@@ -1991,10 +1991,10 @@
 reduces the trip count.
 
 If ``unroll(full)`` is specified the unroller will attempt to fully unroll the
-loop if the trip count is known at compile time. If the loop count is not known
-or the fully unrolled code size is greater than the limit specified by the
-`-pragma-unroll-threshold` command line option the loop will be partially
-unrolled subject to the same limit.
+loop if the trip count is known at compile time. If the fully unrolled code size
+is greater than an internal limit the loop will be partially unrolled up to this
+limit. If the loop count is not known at compile time the loop will not be
+unrolled.
 
 .. code-block:: c++
 
@@ -2006,7 +2006,7 @@
 The unroll count can be specified explicitly with ``unroll_count(_value_)`` where
 _value_ is a positive integer. If this value is greater than the trip count the
 loop will be fully unrolled. Otherwise the loop is partially unrolled subject
-to the `-pragma-unroll-threshold` limit.
+to the same code size limit as with ``unroll(full)``.
 
 .. code-block:: c++
 


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