DebugInfo: Remove DIGlobalVariable::getGlobal()

`DIGlobalVariable::getGlobal()` isn't really helpful, it just does a
`dyn_cast_or_null<>`.  Simplify its only user by doing the cast directly
and delete the code.

llvm-svn: 234796

2 files changed, 3 insertions, 8 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index d84b17a92f1..bc4d5e75fa0 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -140,12 +140,11 @@ DIE *DwarfCompileUnit::getOrCreateGlobalVariableDIE(DIGlobalVariable GV) {
 
   // Add location.
   bool addToAccelTable = false;
-  bool isGlobalVariable = GV.getGlobal() != nullptr;
-  if (isGlobalVariable) {
+  if (auto *Global = dyn_cast_or_null<GlobalVariable>(GV.getConstant())) {
     addToAccelTable = true;
     DIELoc *Loc = new (DIEValueAllocator) DIELoc();
-    const MCSymbol *Sym = Asm->getSymbol(GV.getGlobal());
-    if (GV.getGlobal()->isThreadLocal()) {
+    const MCSymbol *Sym = Asm->getSymbol(Global);
+    if (Global->isThreadLocal()) {
       // FIXME: Make this work with -gsplit-dwarf.
       unsigned PointerSize = Asm->getDataLayout().getPointerSize();
       assert((PointerSize == 4 || PointerSize == 8) &&
diff --git a/llvm/lib/IR/DebugInfo.cpp b/llvm/lib/IR/DebugInfo.cpp
index d7f5f6396aa..20467c93adb 100644
--- a/llvm/lib/IR/DebugInfo.cpp
+++ b/llvm/lib/IR/DebugInfo.cpp
@@ -49,10 +49,6 @@ bool DIVariable::isInlinedFnArgument(const Function *CurFn) {
   return !SP.describes(CurFn);
 }
 
-GlobalVariable *DIGlobalVariable::getGlobal() const {
-  return dyn_cast_or_null<GlobalVariable>(getConstant());
-}
-
 void DICompileUnit::replaceSubprograms(DIArray Subprograms) {
   get()->replaceSubprograms(MDSubprogramArray(Subprograms));
 }