Use hasDefinitiveInitializer() instead of testing the same thing

by hand, and fix a few places that were using hasInitializer() that
appear to depend on the initializer value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79441 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/IPO/InlineSimple.cpp

@@ -78,7 +78,7 @@ bool SimpleInliner::doInitialization(CallGraph &CG) {
     return false;
 
   // Don't crash on invalid code
-  if (!GV->hasInitializer())
+  if (!GV->hasDefinitiveInitializer())
     return false;
   
   const ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());