[turbofan] Connect non-terminating loops via Terminate.

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 bad44f51acea9b8451862d108966cc63386553ed..f5d85b4d492d3f9d4d105c402c59399b7913396a 100644
--- a/src/compiler/common-operator.h
+++ b/src/compiler/common-operator.h
@@ -183,11 +183,6 @@ class CommonOperatorBuilder final : public ZoneObject {
  public:
   explicit CommonOperatorBuilder(Zone* zone);
 
-  // Special operator used only in Branches to mark them as always taken, but
-  // still unfoldable. This is required to properly connect non terminating
-  // loops to end (in both the sea of nodes and the CFG).
-  const Operator* Always();
-
   const Operator* Dead();
   const Operator* End();
   const Operator* Branch(BranchHint = BranchHint::kNone);
@@ -201,6 +196,7 @@ class CommonOperatorBuilder final : public ZoneObject {
   const Operator* Throw();
   const Operator* Deoptimize();
   const Operator* Return();
+  const Operator* Terminate();
 
   const Operator* Start(int num_formal_parameters);
   const Operator* Loop(int control_input_count);