[SCEV][NFC] Fix a misleading description of AddOpsInlineThreshold

The description of this option was copy-pasted from another one and does not
correspond to reality.

Differential Revision: https://reviews.llvm.org/D34390

llvm-svn: 305782
diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
index aebc80a..59f0b22 100644
--- a/llvm/lib/Analysis/ScalarEvolution.cpp
+++ b/llvm/lib/Analysis/ScalarEvolution.cpp
@@ -130,7 +130,7 @@
 
 static cl::opt<unsigned> AddOpsInlineThreshold(
     "scev-addops-inline-threshold", cl::Hidden,
-    cl::desc("Threshold for inlining multiplication operands into a SCEV"),
+    cl::desc("Threshold for inlining addition operands into a SCEV"),
     cl::init(500));
 
 static cl::opt<unsigned> MaxSCEVCompareDepth(