Make the helper functions static. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167501 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index bdbc9bb..8c4c3e2 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -17517,7 +17517,8 @@
   unsigned Cost;
 };
 
-int FindInTable(const X86CostTblEntry *Tbl, unsigned len, int ISD, MVT Ty) {
+static int
+FindInTable(const X86CostTblEntry *Tbl, unsigned len, int ISD, MVT Ty) {
   for (unsigned int i = 0; i < len; ++i)
     if (Tbl[i].ISD == ISD && Tbl[i].Type == Ty)
       return i;
@@ -17533,8 +17534,9 @@
   unsigned Cost;
 };
 
-int FindInConvertTable(const X86TypeConversionCostTblEntry *Tbl, unsigned len,
-                       int ISD, MVT Dst, MVT Src) {
+static int
+FindInConvertTable(const X86TypeConversionCostTblEntry *Tbl, unsigned len,
+                   int ISD, MVT Dst, MVT Src) {
   for (unsigned int i = 0; i < len; ++i)
     if (Tbl[i].ISD == ISD && Tbl[i].Src == Src && Tbl[i].Dst == Dst)
       return i;