[turbofan] Remove support for --turbo-types.

src/compiler/js-generic-lowering.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/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/js-generic-lowering.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/machine-operator.h"
@@ skipping 10 matching lines @@
   if (count > 1) {
     int index = NodeProperties::FirstFrameStateIndex(node) + 1;
     do {
       node->RemoveInput(index);
     } while (--count > 1);
   }
   return count > 0 ? CallDescriptor::kNeedsFrameState
                    : CallDescriptor::kNoFlags;
 }
 
-
-JSGenericLowering::JSGenericLowering(bool is_typing_enabled, JSGraph* jsgraph)
-    : is_typing_enabled_(is_typing_enabled), jsgraph_(jsgraph) {}
-
+JSGenericLowering::JSGenericLowering(JSGraph* jsgraph) : jsgraph_(jsgraph) {}
 
 JSGenericLowering::~JSGenericLowering() {}
 
 
 Reduction JSGenericLowering::Reduce(Node* node) {
   switch (node->opcode()) {
 #define DECLARE_CASE(x)  \
     case IrOpcode::k##x: \
       Lower##x(node);    \
       break;
     JS_OP_LIST(DECLARE_CASE)
 #undef DECLARE_CASE
-    case IrOpcode::kBranch:
-    case IrOpcode::kDeoptimizeIf:
-    case IrOpcode::kDeoptimizeUnless:
-      // TODO(mstarzinger): If typing is enabled then simplified lowering will
-      // have inserted the correct ChangeBoolToBit, otherwise we need to perform
-      // poor-man's representation inference here and insert manual change.
-      if (!is_typing_enabled_) {
-        Node* condition = node->InputAt(0);
-        Node* test = graph()->NewNode(machine()->WordEqual(), condition,
-                                      jsgraph()->TrueConstant());
-        node->ReplaceInput(0, test);
-      }
-      // Fall-through.
     default:
       // Nothing to see.
       return NoChange();
   }
   return Changed(node);
 }
 
 #define REPLACE_BINARY_OP_IC_CALL(Op, token)                                \
   void JSGenericLowering::Lower##Op(Node* node) {                           \
     CallDescriptor::Flags flags = AdjustFrameStatesForCall(node);           \
@@ skipping 676 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSGenericLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8