Update function name and add some helpful comments.

llvm-svn: 198979

1 files changed, 4 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index c606efac5b1..e6eb777ad8f 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -168,8 +168,9 @@ DIType DbgVariable::getType() const {
 
 } // end llvm namespace
 
-/// Return Dwarf Version by checking module flags.
-static unsigned getDwarfVersionFromModule(const Module *M) {
+/// Return Dwarf Version by checking module flags and returning
+/// the default version otherwise.
+static unsigned getDwarfVersion(const Module *M) {
   Value *Val = M->getModuleFlag("Dwarf Version");
   if (!Val)
     return dwarf::DWARF_VERSION;
@@ -211,7 +212,7 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
 
   DwarfVersion = DwarfVersionNumber
                      ? DwarfVersionNumber
-                     : getDwarfVersionFromModule(MMI->getModule());
+                     : getDwarfVersion(MMI->getModule());
 
   {
     NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);