Revert of [turbofan] Support variable size argument popping in TF-generated functions

src/compiler/simplified-lowering.cc

Index: src/compiler/simplified-lowering.cc
diff --git a/src/compiler/simplified-lowering.cc b/src/compiler/simplified-lowering.cc
index 9916d952bdda34d823ec8a10106f5fb479987ad1..3c606c81b13d045545613d98b11fe16e69455b48 100644
--- a/src/compiler/simplified-lowering.cc
+++ b/src/compiler/simplified-lowering.cc
@@ -745,23 +745,6 @@
     }
     // Only enqueue other inputs (effects, control).
     for (int i = tagged_count; i < node->InputCount(); i++) {
-      EnqueueInput(node, i);
-    }
-  }
-
-  void VisitReturn(Node* node) {
-    int tagged_limit = node->op()->ValueInputCount() +
-                       OperatorProperties::GetContextInputCount(node->op()) +
-                       OperatorProperties::GetFrameStateInputCount(node->op());
-    // Visit integer slot count to pop
-    ProcessInput(node, 0, UseInfo::TruncatingWord32());
-
-    // Visit value, context and frame state inputs as tagged.
-    for (int i = 1; i < tagged_limit; i++) {
-      ProcessInput(node, i, UseInfo::AnyTagged());
-    }
-    // Only enqueue other inputs (effects, control).
-    for (int i = tagged_limit; i < node->InputCount(); i++) {
       EnqueueInput(node, i);
     }
   }
@@ -2465,14 +2448,10 @@
       case IrOpcode::kOsrGuard:
         return VisitOsrGuard(node);
 
-      case IrOpcode::kReturn:
-        VisitReturn(node);
-        // Assume the output is tagged.
-        return SetOutput(node, MachineRepresentation::kTagged);
-
       // Operators with all inputs tagged and no or tagged output have uniform
       // handling.
       case IrOpcode::kEnd:
+      case IrOpcode::kReturn:
       case IrOpcode::kIfSuccess:
       case IrOpcode::kIfException:
       case IrOpcode::kIfTrue: