[turbofan] Remove Instruction::IsControl() and Instruction::MarkAsControl()

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

Index: src/compiler/arm/instruction-selector-arm.cc
diff --git a/src/compiler/arm/instruction-selector-arm.cc b/src/compiler/arm/instruction-selector-arm.cc
index 9f788a5bfa8be5d3c359ff67d0e718aedb4d03ea..055363d87122c3d35f437325dd2379f68336db7e 100644
--- a/src/compiler/arm/instruction-selector-arm.cc
+++ b/src/compiler/arm/instruction-selector-arm.cc
@@ -239,9 +239,8 @@ void VisitBinop(InstructionSelector* selector, Node* node,
   DCHECK_GE(arraysize(outputs), output_count);
   DCHECK_NE(kMode_None, AddressingModeField::decode(opcode));
 
-  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);
 }
 
 
@@ -579,9 +578,8 @@ void VisitShift(InstructionSelector* selector, Node* node,
   DCHECK_GE(arraysize(outputs), output_count);
   DCHECK_NE(kMode_None, AddressingModeField::decode(opcode));
 
-  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);
 }
 
 
@@ -1103,8 +1101,7 @@ void VisitFloat64Compare(InstructionSelector* selector, Node* node,
   if (cont->IsBranch()) {
     selector->Emit(cont->Encode(kArmVcmpF64), g.NoOutput(),
                    g.UseRegister(m.left().node()), rhs,
-                   g.Label(cont->true_block()),
-                   g.Label(cont->false_block()))->MarkAsControl();
+                   g.Label(cont->true_block()), g.Label(cont->false_block()));
   } else {
     DCHECK(cont->IsSet());
     selector->Emit(cont->Encode(kArmVcmpF64),
@@ -1151,9 +1148,8 @@ void VisitWordCompare(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);
 }
 
 
@@ -1258,8 +1254,7 @@ void VisitWordCompareZero(InstructionSelector* selector, Node* user,
   InstructionOperand const value_operand = g.UseRegister(value);
   if (cont->IsBranch()) {
     selector->Emit(opcode, g.NoOutput(), value_operand, value_operand,
-                   g.Label(cont->true_block()),
-                   g.Label(cont->false_block()))->MarkAsControl();
+                   g.Label(cont->true_block()), g.Label(cont->false_block()));
   } else {
     selector->Emit(opcode, g.DefineAsRegister(cont->result()), value_operand,
                    value_operand);
@@ -1316,8 +1311,7 @@ void InstructionSelector::VisitSwitch(Node* node, BasicBlock* default_branch,
       DCHECK_LT(value + 2, input_count);
       inputs[value + 2] = g.Label(branch);
     }
-    Emit(kArchTableSwitch, 0, nullptr, input_count, inputs, 0, nullptr)
-        ->MarkAsControl();
+    Emit(kArchTableSwitch, 0, nullptr, input_count, inputs, 0, nullptr);
     return;
   }
 
@@ -1332,8 +1326,7 @@ void InstructionSelector::VisitSwitch(Node* node, BasicBlock* default_branch,
     inputs[index * 2 + 2 + 0] = g.TempImmediate(value);
     inputs[index * 2 + 2 + 1] = g.Label(branch);
   }
-  Emit(kArchLookupSwitch, 0, nullptr, input_count, inputs, 0, nullptr)
-      ->MarkAsControl();
+  Emit(kArchLookupSwitch, 0, nullptr, input_count, inputs, 0, nullptr);
 }