Revert "[DWARF] Fix a few corner cases in expression emission"

[oota-llvm.git] / lib / CodeGen / AsmPrinter / DwarfDebug.cpp

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 4e6a031f420d9ced201e3a054c3daa8eecc7489a..e891ab9896b91357938902f93f8139b1e3e31d6d 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -857,17 +857,16 @@ DwarfDebug::buildLocationList(SmallVectorImpl<DebugLocEntry> &DebugLoc,
     // Attempt to coalesce the ranges of two otherwise identical
     // DebugLocEntries.
     auto CurEntry = DebugLoc.rbegin();
-    auto PrevEntry = std::next(CurEntry);
-    if (PrevEntry != DebugLoc.rend() && PrevEntry->MergeRanges(*CurEntry))
-      DebugLoc.pop_back();
-
     DEBUG({
       dbgs() << CurEntry->getValues().size() << " Values:\n";
-      for (auto Value : CurEntry->getValues()) {
+      for (auto &Value : CurEntry->getValues())
         Value.getExpression()->dump();
-      }
       dbgs() << "-----\n";
     });
+
+    auto PrevEntry = std::next(CurEntry);
+    if (PrevEntry != DebugLoc.rend() && PrevEntry->MergeRanges(*CurEntry))
+      DebugLoc.pop_back();
   }
 }
 
@@ -1341,9 +1340,8 @@ static dwarf::PubIndexEntryDescriptor computeIndexValue(DwarfUnit *CU,
 
   // We could have a specification DIE that has our most of our knowledge,
   // look for that now.
-  DIEValue *SpecVal = Die->findAttribute(dwarf::DW_AT_specification);
-  if (SpecVal) {
-    DIE &SpecDIE = cast<DIEEntry>(SpecVal)->getEntry();
+  if (DIEValue SpecVal = Die->findAttribute(dwarf::DW_AT_specification)) {
+    DIE &SpecDIE = SpecVal.getDIEEntry().getEntry();
     if (SpecDIE.findAttribute(dwarf::DW_AT_external))
       Linkage = dwarf::GIEL_EXTERNAL;
   } else if (Die->findAttribute(dwarf::DW_AT_external))