DebugInfo: Move DIScope::getName() and getContext() to MDScope

Continue gutting the `DIDescriptor` hierarchy.  In this case, move the
guts of `DIScope::getName()` and `DIScope::getContext()` to
`MDScope::getName()` and `MDScope::getScope()`.

llvm-svn: 234691

1 files changed, 30 insertions, 0 deletions

diff --git a/llvm/lib/IR/DebugInfoMetadata.cpp b/llvm/lib/IR/DebugInfoMetadata.cpp
index 6ce091f..e98be8e 100644
--- a/llvm/lib/IR/DebugInfoMetadata.cpp
+++ b/llvm/lib/IR/DebugInfoMetadata.cpp
@@ -108,6 +108,36 @@ unsigned DebugNode::splitFlags(unsigned Flags,
   return Flags;
 }
 
+MDScopeRef MDScope::getScope() const {
+  if (auto *T = dyn_cast<MDType>(this))
+    return T->getScope();
+
+  if (auto *SP = dyn_cast<MDSubprogram>(this))
+    return SP->getScope();
+
+  if (auto *LB = dyn_cast<MDLexicalBlockBase>(this))
+    return MDScopeRef(LB->getScope());
+
+  if (auto *NS = dyn_cast<MDNamespace>(this))
+    return MDScopeRef(NS->getScope());
+
+  assert((isa<MDFile>(this) || isa<MDCompileUnit>(this)) &&
+         "Unhandled type of scope.");
+  return nullptr;
+}
+
+StringRef MDScope::getName() const {
+  if (auto *T = dyn_cast<MDType>(this))
+    return T->getName();
+  if (auto *SP = dyn_cast<MDSubprogram>(this))
+    return SP->getName();
+  if (auto *NS = dyn_cast<MDNamespace>(this))
+    return NS->getName();
+  assert((isa<MDLexicalBlockBase>(this) || isa<MDFile>(this) ||
+          isa<MDCompileUnit>(this)) &&
+         "Unhandled type of scope.");
+  return "";
+}
 
 static StringRef getString(const MDString *S) {
   if (S)