SIL: clear operand bit fields of instructions which are moved between functions

This fixes a bug with can cause OperandSet to misbehave for instructions which were moved from another function.

Author: eeckstein

lib/SIL/IR/SILBasicBlock.cpp

@@ -335,6 +335,9 @@ transferNodesFromList(llvm::ilist_traits<SILBasicBlock> &SrcTraits,
       for (SILValue result : II.getResults()) {
         result->resetBitfields();
       }
+      for (Operand &op : II.getAllOperands()) {
+        op.resetBitfields();
+      }
       II.asSILNode()->resetBitfields();
 
       II.setDebugScope(ScopeCloner.getOrCreateClonedScope(II.getDebugScope()));

lib/SIL/IR/SILInstruction.cpp

@@ -85,6 +85,9 @@ transferNodesFromList(llvm::ilist_traits<SILInstruction> &L2,
       for (SILValue result : first->getResults()) {
         result->resetBitfields();
       }
+      for (Operand &op : first->getAllOperands()) {
+        op.resetBitfields();
+      }
       first->asSILNode()->resetBitfields();
     }
   }