Make helper functions static.

llvm-svn: 212460
diff --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
index 88d461e..6cba8e3 100644
--- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -411,8 +411,8 @@
 
 /// This function factors binary ops which can be combined using distributive
 /// laws. This also factor SHL as MUL e.g. SHL(X, 2) ==> MUL(X, 4).
-Instruction::BinaryOps getBinOpsForFactorization(BinaryOperator *Op,
-                                                 Value *&LHS, Value *&RHS) {
+static Instruction::BinaryOps
+getBinOpsForFactorization(BinaryOperator *Op, Value *&LHS, Value *&RHS) {
   if (!Op)
     return Instruction::BinaryOpsEnd;