Change location information for synthesized properties to be at the
property file/line rather than the @synthesize file/line. Avoids
some nasty confusing-ness with conflating the file from the scope
and the line from the original declaration. Use    the current scope
location as a separate parameter so that we can    match it up
better in the line table with the beginning of the scope.

Update a couple of testcases accordingly since I had to change
that we actually use the passed in location in EmitFunctionStart
and for the new metadata parameter and add a new testcase to
make sure we've got the right line numbers for synthesized
properties.

Part of rdar://11026482

llvm-svn: 153917
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index af55a86..9a33ade 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -1969,9 +1969,11 @@
   FnBeginRegionCount.push_back(LexicalBlockStack.size());
 
   const Decl *D = GD.getDecl();
+  // Use the location of the declaration.
+  SourceLocation Loc = D->getLocation();
   
   unsigned Flags = 0;
-  llvm::DIFile Unit = getOrCreateFile(CurLoc);
+  llvm::DIFile Unit = getOrCreateFile(Loc);
   llvm::DIDescriptor FDContext(Unit);
   llvm::DIArray TParamsArray;
   if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
@@ -2015,17 +2017,16 @@
   if (!Name.empty() && Name[0] == '\01')
     Name = Name.substr(1);
 
-  // It is expected that CurLoc is set before using EmitFunctionStart.
-  // Usually, CurLoc points to the left bracket location of compound
-  // statement representing function body.
-  unsigned LineNo = getLineNumber(CurLoc);
+  unsigned LineNo = getLineNumber(Loc);
   if (D->isImplicit())
     Flags |= llvm::DIDescriptor::FlagArtificial;
+
   llvm::DISubprogram SPDecl = getFunctionDeclaration(D);
   llvm::DISubprogram SP =
     DBuilder.createFunction(FDContext, Name, LinkageName, Unit,
                             LineNo, getOrCreateFunctionType(D, FnType, Unit),
                             Fn->hasInternalLinkage(), true/*definition*/,
+                            getLineNumber(CurLoc),
                             Flags, CGM.getLangOpts().Optimize, Fn,
                             TParamsArray, SPDecl);
 
diff --git a/clang/lib/CodeGen/CGObjC.cpp b/clang/lib/CodeGen/CGObjC.cpp
index b4fc6e0..b3460ae 100644
--- a/clang/lib/CodeGen/CGObjC.cpp
+++ b/clang/lib/CodeGen/CGObjC.cpp
@@ -708,7 +708,7 @@
   const ObjCPropertyDecl *PD = PID->getPropertyDecl();
   ObjCMethodDecl *OMD = PD->getGetterMethodDecl();
   assert(OMD && "Invalid call to generate getter (empty method)");
-  StartObjCMethod(OMD, IMP->getClassInterface(), PID->getLocStart());
+  StartObjCMethod(OMD, IMP->getClassInterface(), OMD->getLocStart());
 
   generateObjCGetterBody(IMP, PID, AtomicHelperFn);
 
@@ -1216,7 +1216,7 @@
   const ObjCPropertyDecl *PD = PID->getPropertyDecl();
   ObjCMethodDecl *OMD = PD->getSetterMethodDecl();
   assert(OMD && "Invalid call to generate setter (empty method)");
-  StartObjCMethod(OMD, IMP->getClassInterface(), PID->getLocStart());
+  StartObjCMethod(OMD, IMP->getClassInterface(), OMD->getLocStart());
 
   generateObjCSetterBody(IMP, PID, AtomicHelperFn);