From 001c4f3ff02ca06dddbce13ca44ca36e6046bf81 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Fri, 15 Jul 2011 00:30:39 +0000
Subject: Do not get confused by multiple empty lexical scopes inlined at one
 location.

llvm-svn: 135232
---
 llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

(limited to 'llvm/lib')

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 03fb8d1fa31..b7fc41b77b7 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1587,18 +1587,22 @@ DbgScope *DwarfDebug::getOrCreateDbgScope(DebugLoc DL) {
   }
 
   getOrCreateAbstractScope(Scope);
-  DbgScope *WScope = DbgScopeMap.lookup(InlinedAt);
+  DbgScope *WScope = NULL;
+  const MDNode *Key = InlinedAt;
+  if (const MDNode *Nest = DILocation(InlinedAt).getOrigLocation())
+    Key = Nest;
+  WScope = DbgScopeMap.lookup(Key);
   if (WScope)
     return WScope;
 
   WScope = new DbgScope(NULL, DIDescriptor(Scope), InlinedAt);
-  DbgScopeMap.insert(std::make_pair(InlinedAt, WScope));
+  DbgScopeMap[Key] = WScope;
   DbgScope *Parent =
     getOrCreateDbgScope(DebugLoc::getFromDILocation(InlinedAt));
   WScope->setParent(Parent);
   Parent->addScope(WScope);
 
-  ConcreteScopes[InlinedAt] = WScope;
+  ConcreteScopes[Key] = WScope;
 
   return WScope;
 }
@@ -2083,8 +2087,12 @@ DbgScope *DwarfDebug::findDbgScope(DebugLoc DL) {
 
   DbgScope *Scope = NULL;
   LLVMContext &Ctx = Asm->MF->getFunction()->getContext();
-  if (const MDNode *IA = DL.getInlinedAt(Ctx))
-    Scope = ConcreteScopes.lookup(IA);
+  if (const MDNode *IA = DL.getInlinedAt(Ctx)) {
+    const MDNode *Key = IA;
+    if (const MDNode *Nest = DILocation(IA).getOrigLocation())
+      Key = Nest;
+    Scope = ConcreteScopes.lookup(Key);
+  }
   if (Scope == 0)
     Scope = DbgScopeMap.lookup(DL.getScope(Ctx));
 
-- 
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