Revert r108369, sorting llvm.dbg.declare information by source position,

since it doesn't work for front-ends which don't emit column information
(which includes llvm-gcc in its present configuration), and doesn't
work for clang for K&R style variables where the variables are declared
in a different order from the parameter list.

Instead, make a separate pass through the instructions to collect the
llvm.dbg.declare instructions in order. This ensures that the debug
information for variables is emitted in this order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108538 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/MachineModuleInfo.cpp

@@ -579,10 +579,3 @@ namespace {
     }
   };
 }
-
-MachineModuleInfo::VariableDbgInfoMapTy &
-MachineModuleInfo::getVariableDbgInfo() {
-  std::stable_sort(VariableDbgInfo.begin(), VariableDbgInfo.end(),
-                   VariableDebugSorter());
-  return VariableDbgInfo;
-}