Rename isWeakForLinker to mayBeOverridden.  Use it
instead of hasWeakLinkage in a bunch of optimization
passes.

llvm-svn: 56782
diff --git a/llvm/lib/Target/ELFTargetAsmInfo.cpp b/llvm/lib/Target/ELFTargetAsmInfo.cpp
index 7457e08..dcf1830 100644
--- a/llvm/lib/Target/ELFTargetAsmInfo.cpp
+++ b/llvm/lib/Target/ELFTargetAsmInfo.cpp
@@ -55,7 +55,7 @@
       return getNamedSection(Name.c_str(), Flags);
     }
   } else if (const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV)) {
-    if (GVar->isWeakForLinker()) {
+    if (GVar->mayBeOverridden()) {
       std::string Name = UniqueSectionForGlobal(GVar, Kind);
       unsigned Flags = SectionFlagsForGlobal(GVar, Name.c_str());
       return getNamedSection(Name.c_str(), Flags);