From b21a758bc232fcecdaca4fbc05334bb5b79cdad1 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Wed, 26 May 2010 17:42:50 +0000
Subject: [PATCH] Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104706 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 6 +-----
 lib/CodeGen/AsmPrinter/DwarfDebug.h   | 6 ------
 2 files changed, 1 insertion(+), 11 deletions(-)

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 231f63c1bc5..048268fa7ca 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2198,10 +2198,8 @@ void DwarfDebug::collectVariableInfo(const MachineFunction *MF) {
     Processed.insert(DV);
     DbgVariable *RegVar = new DbgVariable(DV);
     Scope->addVariable(RegVar);
-    if (DV.getTag() != dwarf::DW_TAG_arg_variable) {
-      DbgValueStartMap[MInsn] = RegVar;
+    if (DV.getTag() != dwarf::DW_TAG_arg_variable)
       DbgVariableLabelsMap[RegVar] = getLabelBeforeInsn(MInsn); 
-    }
     if (DbgVariable *AbsVar = findAbstractVariable(DV, MInsn->getDebugLoc())) {
       DbgVariableToDbgInstMap[AbsVar] = MInsn;
       VarToAbstractVarMap[RegVar] = AbsVar;
@@ -2224,7 +2222,6 @@ void DwarfDebug::collectVariableInfo(const MachineFunction *MF) {
         continue;
       } 
       End = *MVI;
-      DbgValueStartMap[End] = RegVar;
       MachineLocation MLoc;
       MLoc.set(Begin->getOperand(0).getReg(), 0);
       const MCSymbol *FLabel = getLabelBeforeInsn(Begin);
@@ -2683,7 +2680,6 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
   DeleteContainerSeconds(DbgScopeMap);
   InsnsBeginScopeSet.clear();
   InsnsEndScopeSet.clear();
-  DbgValueStartMap.clear();
   ConcreteScopes.clear();
   DeleteContainerSeconds(AbstractScopes);
   AbstractScopesList.clear();
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 781302e9998..5d2294918e6 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -164,12 +164,6 @@ class DwarfDebug {
   /// DbgScopes in AbstractScopes.
   DenseMap<const MDNode *, DbgVariable *> AbstractVariables;
 
-  /// DbgValueStartMap - Tracks starting scope of variable DIEs.
-  /// If the scope of an object begins sometime after the low pc value for the 
-  /// scope most closely enclosing the object, the object entry may have a 
-  /// DW_AT_start_scope attribute.
-  DenseMap<const MachineInstr *, DbgVariable *> DbgValueStartMap;
-
   /// DbgVariableToFrameIndexMap - Tracks frame index used to find 
   /// variable's value.
   DenseMap<const DbgVariable *, int> DbgVariableToFrameIndexMap;