[turbofan] Add checked load/store operators.

src/compiler/instruction-selector.cc

Index: src/compiler/instruction-selector.cc
diff --git a/src/compiler/instruction-selector.cc b/src/compiler/instruction-selector.cc
index 2bfc3e1c64ee9d0554e53700dceb9889ff0fda16..05ba19f71c187cbb33cae35c65f347c8cdc518a0 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -133,6 +133,31 @@ Instruction* InstructionSelector::Emit(
 
 
 Instruction* InstructionSelector::Emit(
+    InstructionCode opcode, InstructionOperand* output, InstructionOperand* a,
+    InstructionOperand* b, InstructionOperand* c, InstructionOperand* d,
+    InstructionOperand* e, size_t temp_count, InstructionOperand** temps) {
+  size_t output_count = output == NULL ? 0 : 1;
+  InstructionOperand* inputs[] = {a, b, c, d, e};
+  size_t input_count = arraysize(inputs);
+  return Emit(opcode, output_count, &output, input_count, inputs, temp_count,
+              temps);
+}
+
+
+Instruction* InstructionSelector::Emit(
+    InstructionCode opcode, InstructionOperand* output, InstructionOperand* a,
+    InstructionOperand* b, InstructionOperand* c, InstructionOperand* d,
+    InstructionOperand* e, InstructionOperand* f, size_t temp_count,
+    InstructionOperand** temps) {
+  size_t output_count = output == NULL ? 0 : 1;
+  InstructionOperand* inputs[] = {a, b, c, d, e, f};
+  size_t input_count = arraysize(inputs);
+  return Emit(opcode, output_count, &output, input_count, inputs, temp_count,
+              temps);
+}
+
+
+Instruction* InstructionSelector::Emit(
     InstructionCode opcode, size_t output_count, InstructionOperand** outputs,
     size_t input_count, InstructionOperand** inputs, size_t temp_count,
     InstructionOperand** temps) {
@@ -538,6 +563,10 @@ MachineType InstructionSelector::GetMachineType(Node* node) {
       return OpParameter<LoadRepresentation>(node);
     case IrOpcode::kStore:
       return kMachNone;
+    case IrOpcode::kCheckedLoad:
+      return OpParameter<MachineType>(node);
+    case IrOpcode::kCheckedStore:
+      return kMachNone;
     case IrOpcode::kWord32And:
     case IrOpcode::kWord32Or:
     case IrOpcode::kWord32Xor:
@@ -808,6 +837,13 @@ void InstructionSelector::VisitNode(Node* node) {
       return MarkAsDouble(node), VisitFloat64RoundTiesAway(node);
     case IrOpcode::kLoadStackPointer:
       return VisitLoadStackPointer(node);
+    case IrOpcode::kCheckedLoad: {
+      MachineType rep = OpParameter<MachineType>(node);
+      MarkAsRepresentation(rep, node);
+      return VisitCheckedLoad(node);
+    }
+    case IrOpcode::kCheckedStore:
+      return VisitCheckedStore(node);
     default:
       V8_Fatal(__FILE__, __LINE__, "Unexpected operator #%d:%s @ node #%d",
                node->opcode(), node->op()->mnemonic(), node->id());