[turbofan] Nuke the context types.

src/compiler/verifier.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/verifier.h"
 
 #include <algorithm>
 #include <deque>
 #include <queue>
 #include <sstream>
@@ skipping 592 matching lines @@
       // Type is empty.
       CheckNotTyped(node);
       break;
     case IrOpcode::kJSCreateFunctionContext:
     case IrOpcode::kJSCreateCatchContext:
     case IrOpcode::kJSCreateWithContext:
     case IrOpcode::kJSCreateBlockContext:
     case IrOpcode::kJSCreateScriptContext: {
       // Type is Context, and operand is Internal.
       Node* context = NodeProperties::GetContextInput(node);
-      // TODO(rossberg): This should really be Is(Internal), but the typer
-      // currently can't do backwards propagation.
-      CheckTypeMaybe(context, Type::Internal());
-      if (typing == TYPED) CHECK(NodeProperties::GetType(node)->IsContext());
+      // TODO(bmeurer): This should say CheckTypeIs, but we don't have type
+      // OtherInternal on certain contexts, i.e. those from OsrValue inputs.
+      CheckTypeMaybe(context, Type::OtherInternal());
+      CheckTypeIs(node, Type::OtherInternal());
       break;
     }
 
     case IrOpcode::kJSCallConstruct:
     case IrOpcode::kJSConvertReceiver:
       // Type is Receiver.
       CheckTypeIs(node, Type::Receiver());
       break;
     case IrOpcode::kJSCallFunction:
     case IrOpcode::kJSCallRuntime:
@@ skipping 954 matching lines @@
          replacement->op()->EffectOutputCount() > 0);
   DCHECK(!NodeProperties::IsFrameStateEdge(edge) ||
          replacement->opcode() == IrOpcode::kFrameState);
 }
 
 #endif  // DEBUG
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8