From c8e77640a53823b233f3f7a5c2be12aef9ebc69e Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 1 Apr 2010 22:47:29 +0000
Subject: [PATCH] Revert r100117.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100145 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 24 ++++++------------------
 1 file changed, 6 insertions(+), 18 deletions(-)

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 52c7089bb28..fb91d4f9849 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2147,8 +2147,6 @@ bool DwarfDebug::extractScopeInformation() {
 
   DenseMap<const MachineInstr *, unsigned> MIIndexMap;
   unsigned MIIndex = 0;
-  MDNode *PrevScope = NULL;
-  MDNode *PrevInlinedAt = NULL;
   // Scan each instruction and create scopes. First build working set of scopes.
   for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
        I != E; ++I) {
@@ -2162,23 +2160,17 @@ bool DwarfDebug::extractScopeInformation() {
       if (DL.isUnknown()) continue;
       DILocation DLT = MF->getDILocation(DL);
       DIScope DLTScope = DLT.getScope();
-      MDNode *NewScope = DLTScope.getNode();
-      if (!NewScope) continue;
+      if (!DLTScope.getNode()) continue;
       // There is no need to create another DIE for compile unit. For all
       // other scopes, create one DbgScope now. This will be translated
       // into a scope DIE at the end.
       if (DLTScope.isCompileUnit()) continue;
-      MDNode *NewInlinedAt = DLT.getOrigLocation().getNode();
-      if (NewScope == PrevScope && NewInlinedAt == PrevInlinedAt) continue;
-      createDbgScope(NewScope, NewInlinedAt);
-      PrevScope = NewScope;
-      PrevInlinedAt = NewInlinedAt;
+      createDbgScope(DLTScope.getNode(), DLT.getOrigLocation().getNode());
     }
   }
 
+
   // Build scope hierarchy using working set of scopes.
-  PrevScope = NULL;
-  PrevInlinedAt = NULL;
   for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
        I != E; ++I) {
     for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
@@ -2190,18 +2182,14 @@ bool DwarfDebug::extractScopeInformation() {
       if (DL.isUnknown())  continue;
       DILocation DLT = MF->getDILocation(DL);
       DIScope DLTScope = DLT.getScope();
-      MDNode *NewScope = DLTScope.getNode();
-      if (!NewScope) continue;
+      if (!DLTScope.getNode()) continue;
       // There is no need to create another DIE for compile unit. For all
       // other scopes, create one DbgScope now. This will be translated
       // into a scope DIE at the end.
       if (DLTScope.isCompileUnit()) continue;
-      MDNode *NewInlinedAt = DLT.getOrigLocation().getNode();
-      if (NewScope == PrevScope && NewInlinedAt == PrevInlinedAt) continue;
-      DbgScope *Scope = getUpdatedDbgScope(NewScope, MInsn, NewInlinedAt);
+      DbgScope *Scope = getUpdatedDbgScope(DLTScope.getNode(), MInsn, 
+                                           DLT.getOrigLocation().getNode());
       Scope->setLastInsn(MInsn);
-      PrevScope = NewScope;
-      PrevInlinedAt = NewInlinedAt;
     }
   }
 
-- 
2.11.0