[PATCH] [OPENMP][LV] Respect Hints.Force meta-data for loops in LoopVectorizer

[tnowicki at apple.com]

Hi Zinovy,

Sorry for the delay.

LGTM. Just a few small things.

+    // Check the loop for a trip count threshold:
+    // do not vectorize loops with a tiny trip count.
+    {
+      BasicBlock *Latch = L->getLoopLatch();

Could you remove the extra braces?

+  if (ForceVectorization && VF > 1) {
+    Width = 2;
+    Cost = expectedCost(Width) / (float)Width;
+  }

Could you add a comment to explain that scalar width is not considered because the user wants vectorization.

Thanks for working on this,

Tyler

http://reviews.llvm.org/D3423