[turbofan] Implement OSR for outer loops.

src/compiler/common-operator.h

Index: src/compiler/common-operator.h
diff --git a/src/compiler/common-operator.h b/src/compiler/common-operator.h
index af6066b1330ab5c2bac4f9839afab8d68168b83c..2505aff8c0ca1ef7d8177af19a7ccaa24f14cb4c 100644
--- a/src/compiler/common-operator.h
+++ b/src/compiler/common-operator.h
@@ -173,6 +173,10 @@ class CommonOperatorBuilder FINAL : public ZoneObject {
   const Operator* Merge(int control_input_count);
   const Operator* Parameter(int index);
 
+  const Operator* OsrNormalEntry();
+  const Operator* OsrLoopEntry();
+  const Operator* OsrValue(int index);
+
   const Operator* Int32Constant(int32_t);
   const Operator* Int64Constant(int64_t);
   const Operator* Float32Constant(volatile float);