[turbofan] remove control field from instruction

src/compiler/arm64/instruction-selector-arm64.cc

Index: src/compiler/arm64/instruction-selector-arm64.cc
diff --git a/src/compiler/arm64/instruction-selector-arm64.cc b/src/compiler/arm64/instruction-selector-arm64.cc
index ee493cb75367f9b5077a262b439166383a4078a9..2a962e9fc317dbc67bb0185645e84d33db7630f4 100644
--- a/src/compiler/arm64/instruction-selector-arm64.cc
+++ b/src/compiler/arm64/instruction-selector-arm64.cc
@@ -219,9 +219,8 @@ static void VisitBinop(InstructionSelector* selector, Node* node,
   DCHECK_GE(arraysize(inputs), input_count);
   DCHECK_GE(arraysize(outputs), output_count);
 
-  Instruction* instr = selector->Emit(cont->Encode(opcode), output_count,
-                                      outputs, input_count, inputs);
-  if (cont->IsBranch()) instr->MarkAsControl();
+  selector->Emit(cont->Encode(opcode), output_count, outputs, input_count,
+                 inputs);
 }
 
 
@@ -1163,7 +1162,7 @@ static void VisitCompare(InstructionSelector* selector, InstructionCode opcode,
   opcode = cont->Encode(opcode);
   if (cont->IsBranch()) {
     selector->Emit(opcode, NULL, left, right, g.Label(cont->true_block()),
-                   g.Label(cont->false_block()))->MarkAsControl();
+                   g.Label(cont->false_block()));
   } else {
     DCHECK(cont->IsSet());
     selector->Emit(opcode, g.DefineAsRegister(cont->result()), left, right);
@@ -1351,8 +1350,7 @@ void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch,
                g.UseRegister(m.left().node()),
                g.TempImmediate(
                    base::bits::CountTrailingZeros32(m.right().Value())),
-               g.Label(cont.true_block()),
-               g.Label(cont.false_block()))->MarkAsControl();
+               g.Label(cont.true_block()), g.Label(cont.false_block()));
           return;
         }
         return VisitWordCompare(this, value, kArm64Tst32, &cont, true,
@@ -1369,8 +1367,7 @@ void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch,
                g.UseRegister(m.left().node()),
                g.TempImmediate(
                    base::bits::CountTrailingZeros64(m.right().Value())),
-               g.Label(cont.true_block()),
-               g.Label(cont.false_block()))->MarkAsControl();
+               g.Label(cont.true_block()), g.Label(cont.false_block()));
           return;
         }
         return VisitWordCompare(this, value, kArm64Tst, &cont, true,
@@ -1383,8 +1380,7 @@ void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch,
 
   // Branch could not be combined with a compare, compare against 0 and branch.
   Emit(cont.Encode(kArm64CompareAndBranch32), NULL, g.UseRegister(value),
-       g.Label(cont.true_block()),
-       g.Label(cont.false_block()))->MarkAsControl();
+       g.Label(cont.true_block()), g.Label(cont.false_block()));
 }