[llvm-debuginfo-analyzer] IR Reader.

Changes required after rebase with upstream to include:

  Remove LVScope::Children container.
  #144750

Author: CarlosAlbertoEnciso

llvm/lib/DebugInfo/LogicalView/Core/LVReader.cpp

@@ -32,7 +32,8 @@ void printCollectedElements(LVScope *Root) {
           Entry->print(dbgs());
     };
 
-    Print(Parent->getChildren());
+    for (LVElement *Element : Parent->getChildren())
+      Element->print(dbgs());
     Print(Parent->getLines());
     Print(Parent->getRanges());
     if (const LVScopes *Scopes = Parent->getScopes())

llvm/lib/DebugInfo/LogicalView/Readers/LVIRReader.cpp

@@ -2283,14 +2283,14 @@ void LVIRReader::checkScopes(LVScope *Scope) {
   };
 
   std::function<void(LVScope * Parent)> Traverse = [&](LVScope *Current) {
-    auto Check = [&](const auto *Set) {
-      if (Set)
-        for (const auto &Entry : *Set)
-          if (!Entry->getIsFinalized())
-            PrintElement(Entry);
+    auto Check = [&](auto *Entry) {
+      if (Entry)
+        if (!Entry->getIsFinalized())
+          PrintElement(Entry);
     };
 
-    Check(Current->getChildren());
+    for (LVElement *Element : Current->getChildren())
+      Check(Element);
 
     if (Current->getScopes())
       for (LVScope *Scope : *Current->getScopes())

llvm/test/tools/llvm-debuginfo-analyzer/IR/01-ir-compare-logical-elements.test

@@ -35,8 +35,8 @@
 ; ONE-NEXT:  [002]     1         {TypeAlias} 'INTPTR' -> '* const int'
 ; ONE-NEXT:  [002]     2         {Function} extern not_inlined 'foo' -> 'int'
 ; ONE-NEXT:  [003]                 {Block}
-; ONE-NEXT:  [004]     5             {Variable} 'CONSTANT' -> 'const INTEGER'
 ; ONE-NEXT: +[004]     4             {TypeAlias} 'INTEGER' -> 'int'
+; ONE-NEXT:  [004]     5             {Variable} 'CONSTANT' -> 'const INTEGER'
 ; ONE-NEXT:  [003]     2           {Parameter} 'ParamBool' -> 'bool'
 ; ONE-NEXT:  [003]     2           {Parameter} 'ParamPtr' -> 'INTPTR'
 ; ONE-NEXT:  [003]     2           {Parameter} 'ParamUnsigned' -> 'unsigned int'