Revert of [turbofan] remove control field from instruction

src/compiler/mips/instruction-selector-mips.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/base/bits.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 87 matching lines @@
   outputs[output_count++] = g.DefineAsRegister(node);
   if (cont->IsSet()) {
     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();
 }
 
 
 static void VisitBinop(InstructionSelector* selector, Node* node,
                        InstructionCode opcode) {
   FlagsContinuation cont;
   VisitBinop(selector, node, opcode, &cont);
 }
 
 
@@ skipping 458 matching lines @@
 namespace {
 
 // Shared routine for multiple compare operations.
 static void VisitCompare(InstructionSelector* selector, InstructionCode opcode,
                          InstructionOperand* left, InstructionOperand* right,
                          FlagsContinuation* cont) {
   MipsOperandGenerator g(selector);
   opcode = cont->Encode(opcode);
   if (cont->IsBranch()) {
     selector->Emit(opcode, NULL, left, right, g.Label(cont->true_block()),
-                   g.Label(cont->false_block()));
+                   g.Label(cont->false_block()))->MarkAsControl();
   } else {
     DCHECK(cont->IsSet());
     // TODO(plind): Revisit and test this path.
     selector->Emit(opcode, g.DefineAsRegister(cont->result()), left, right);
   }
 }
 
 
 // Shared routine for multiple float compare operations.
 void VisitFloat64Compare(InstructionSelector* selector, Node* node,
@@ skipping 108 matching lines @@
     }
     break;
   }
 
   // Continuation could not be combined with a compare, emit compare against 0.
   MipsOperandGenerator g(selector);
   InstructionCode const opcode = cont->Encode(kMipsCmp);
   InstructionOperand* const value_operand = g.UseRegister(value);
   if (cont->IsBranch()) {
     selector->Emit(opcode, nullptr, value_operand, g.TempImmediate(0),
-                   g.Label(cont->true_block()), g.Label(cont->false_block()));
+                   g.Label(cont->true_block()),
+                   g.Label(cont->false_block()))->MarkAsControl();
   } else {
     selector->Emit(opcode, g.DefineAsRegister(cont->result()), value_operand,
                    g.TempImmediate(0));
   }
 }
 
 
 void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch,
                                       BasicBlock* fbranch) {
   FlagsContinuation cont(kNotEqual, tbranch, fbranch);
@@ skipping 75 matching lines @@
 
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {
   return MachineOperatorBuilder::kNoFlags;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8