2 files changed, 14 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
index 568f66c039..1e45ec6d11 100644
--- a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -761,6 +761,10 @@ EmitMachineNode(SDNode *Node, bool IsClone, bool IsCloned,
            i != e; ++i)
         MI->addRegisterDead(IDList[i-II.getNumDefs()], TRI);
     }
+
+  // Run post-isel target hook to adjust this instruction if needed.
+  if (II.hasPostISelHook())
+    TLI->AdjustInstrPostInstrSelection(MI, Node);
 }
 
 /// EmitSpecialNode - Generate machine code for a target-independent node and
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index dda018b939..7a3ea86e8c 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -177,6 +177,16 @@ TargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
   return 0;
 }
 
+void TargetLowering::AdjustInstrPostInstrSelection(MachineInstr *MI,
+                                                   SDNode *Node) const {
+#ifndef NDEBUG
+  dbgs() << "If a target marks an instruction with "
+          "'hasPostISelHook', it must implement "
+          "TargetLowering::AdjustInstrPostInstrSelection!";
+#endif
+  llvm_unreachable(0);
+}
+
 //===----------------------------------------------------------------------===//
 // SelectionDAGISel code
 //===----------------------------------------------------------------------===//