[PATCH] Documentation for loop unrolling pragmas.

[Eli Bendersky]

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Comment at: docs/LanguageExtensions.rst:1791
@@ +1790,3 @@
+Loop unrolling replicates the body of a loop increasing the loop size
+and reducing the loop count.  Loop control overhead can be reduced or
+eliminated, and additional ILP can be exposed.  The unroller selects
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Maybe s/loop count/loop trip count/ for clarify? There's another instance later on

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Comment at: docs/LanguageExtensions.rst:1793
@@ +1792,3 @@
+eliminated, and additional ILP can be exposed.  The unroller selects
+an unroll count based on a limit on the growth of code size and
+whether the loop can be unrolled completely.
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I find this sentence a bit confusing in the context of unroll pragmas which tell the unroller exactly how much we want to unroll. OTOH this sentence seems to be describing the unrolling heuristic?

http://reviews.llvm.org/D4198