Make helper functions static. NFC.

llvm-svn: 304029
diff --git a/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp b/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
index 27ae77b..0971c59 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
@@ -115,7 +115,8 @@
   return getBaseTypeSize(BaseType);
 }
 
-bool hasDebugInfo(const MachineModuleInfo *MMI, const MachineFunction *MF) {
+static bool hasDebugInfo(const MachineModuleInfo *MMI,
+                         const MachineFunction *MF) {
   if (!MMI->hasDebugInfo())
     return false;
   auto *SP = MF->getFunction()->getSubprogram();
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 6b9ab71..6928ad6 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -14848,10 +14848,10 @@
 // This is often generated during legalization.
 // e.g. v4i32 <0,u,1,u> -> (v2i64 any_vector_extend_in_reg(v4i32 src))
 // TODO Add support for ZERO_EXTEND_VECTOR_INREG when we have a test case.
-SDValue combineShuffleToVectorExtend(ShuffleVectorSDNode *SVN,
-                                     SelectionDAG &DAG,
-                                     const TargetLowering &TLI,
-                                     bool LegalOperations) {
+static SDValue combineShuffleToVectorExtend(ShuffleVectorSDNode *SVN,
+                                            SelectionDAG &DAG,
+                                            const TargetLowering &TLI,
+                                            bool LegalOperations) {
   EVT VT = SVN->getValueType(0);
   bool IsBigEndian = DAG.getDataLayout().isBigEndian();
 
@@ -14898,7 +14898,8 @@
 // destination type. This is often generated during legalization.
 // If the source node itself was a '*_extend_vector_inreg' node then we should
 // then be able to remove it.
-SDValue combineTruncationShuffle(ShuffleVectorSDNode *SVN, SelectionDAG &DAG) {
+static SDValue combineTruncationShuffle(ShuffleVectorSDNode *SVN,
+                                        SelectionDAG &DAG) {
   EVT VT = SVN->getValueType(0);
   bool IsBigEndian = DAG.getDataLayout().isBigEndian();