Revert of [turbofan] remove control field from instruction

src/compiler/ia32/instruction-selector-ia32.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/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 356 matching lines @@
   if (cont->IsSet()) {
     // TODO(turbofan): Use byte register here.
     outputs[output_count++] = g.DefineAsRegister(cont->result());
   }
 
   DCHECK_NE(0, input_count);
   DCHECK_NE(0, output_count);
   DCHECK_GE(arraysize(inputs), input_count);
   DCHECK_GE(arraysize(outputs), output_count);
 
-  selector->Emit(cont->Encode(opcode), output_count, outputs, input_count,
-                 inputs);
+  Instruction* instr = selector->Emit(cont->Encode(opcode), output_count,
+                                      outputs, input_count, inputs);
+  if (cont->IsBranch()) instr->MarkAsControl();
 }
 
 
 // Shared routine for multiple binary operations.
 static void VisitBinop(InstructionSelector* selector, Node* node,
                        InstructionCode opcode) {
   FlagsContinuation cont;
   VisitBinop(selector, node, opcode, &cont);
 }
 
@@ skipping 379 matching lines @@
 
 namespace {
 
 // Shared routine for multiple compare operations.
 void VisitCompare(InstructionSelector* selector, InstructionCode opcode,
                   InstructionOperand* left, InstructionOperand* right,
                   FlagsContinuation* cont) {
   IA32OperandGenerator g(selector);
   if (cont->IsBranch()) {
     selector->Emit(cont->Encode(opcode), NULL, left, right,
-                   g.Label(cont->true_block()), g.Label(cont->false_block()));
+                   g.Label(cont->true_block()),
+                   g.Label(cont->false_block()))->MarkAsControl();
   } else {
     DCHECK(cont->IsSet());
     // TODO(titzer): Needs byte register.
     selector->Emit(cont->Encode(opcode), g.DefineAsRegister(cont->result()),
                    left, right);
   }
 }
 
 
 // Shared routine for multiple compare operations.
@@ skipping 211 matching lines @@
     return MachineOperatorBuilder::kFloat64Floor |
            MachineOperatorBuilder::kFloat64Ceil |
            MachineOperatorBuilder::kFloat64RoundTruncate |
            MachineOperatorBuilder::kWord32ShiftIsSafe;
   }
   return MachineOperatorBuilder::Flag::kNoFlags;
 }
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8