Some comment fixes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168299 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/InlineCost.cpp b/lib/Analysis/InlineCost.cpp
index 5f51f77..0da5413 100644
--- a/lib/Analysis/InlineCost.cpp
+++ b/lib/Analysis/InlineCost.cpp
@@ -794,7 +794,7 @@
 /// viable. It computes the cost and adjusts the threshold based on numerous
 /// factors and heuristics. If this method returns false but the computed cost
 /// is below the computed threshold, then inlining was forcibly disabled by
-/// some artifact of the rountine.
+/// some artifact of the routine.
 bool CallAnalyzer::analyzeCall(CallSite CS) {
   ++NumCallsAnalyzed;