As Chris pointed out, we don't actually need to pass the context around here.

llvm-svn: 75161
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 260996f..2d15494 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -811,11 +811,11 @@
 }
 
 void SelectionDAG::init(MachineFunction &mf, MachineModuleInfo *mmi,
-                        DwarfWriter *dw, LLVMContext* C) {
+                        DwarfWriter *dw) {
   MF = &mf;
   MMI = mmi;
   DW = dw;
-  Context = C;
+  Context = mf.getFunction()->getContext();  
 }
 
 SelectionDAG::~SelectionDAG() {