[turbofan] Add checked load/store operators.

src/compiler/code-generator.cc

 // Copyright 2013 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/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/pipeline.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 CodeGenerator::CodeGenerator(Frame* frame, Linkage* linkage,
                              InstructionSequence* code, CompilationInfo* info)
     : frame_(frame),
       linkage_(linkage),
       code_(code),
       info_(info),
       labels_(zone()->NewArray<Label>(code->InstructionBlockCount())),
       current_block_(BasicBlock::RpoNumber::Invalid()),
       current_source_position_(SourcePosition::Invalid()),
       masm_(code->zone()->isolate(), NULL, 0),
       resolver_(this),
       safepoints_(code->zone()),
       deoptimization_states_(code->zone()),
       deoptimization_literals_(code->zone()),
       translations_(code->zone()),
-      last_lazy_deopt_pc_(0) {
+      last_lazy_deopt_pc_(0),
+      ools_(nullptr) {
   for (int i = 0; i < code->InstructionBlockCount(); ++i) {
     new (&labels_[i]) Label;
   }
 }
 
 
 Handle<Code> CodeGenerator::GenerateCode() {
   CompilationInfo* info = this->info();
 
   // Emit a code line info recording start event.
@@ skipping 23 matching lines @@
         SNPrintF(buffer, "-- B%d start --", block->id().ToInt());
         masm()->RecordComment(buffer.start());
       }
       masm()->bind(GetLabel(current_block_));
       for (int i = block->code_start(); i < block->code_end(); ++i) {
         AssembleInstruction(code()->InstructionAt(i));
       }
     }
   }
 
+  // Assemble all out-of-line code.
+  if (ools_) {
+    masm()->RecordComment("-- Out of line code --");
+    for (OutOfLineCode* ool = ools_; ool; ool = ool->next()) {
+      masm()->bind(ool->entry());
+      ool->Generate();
+      masm()->jmp(ool->exit());
+    }
+  }
+
   FinishCode(masm());
 
   // Ensure there is space for lazy deopt.
   if (!info->IsStub()) {
     int target_offset = masm()->pc_offset() + Deoptimizer::patch_size();
     while (masm()->pc_offset() < target_offset) {
       masm()->nop();
     }
   }
 
@@ skipping 464 matching lines @@
 void CodeGenerator::AssembleSwap(InstructionOperand* source,
                                  InstructionOperand* destination) {
   UNIMPLEMENTED();
 }
 
 
 void CodeGenerator::AddNopForSmiCodeInlining() { UNIMPLEMENTED(); }
 
 #endif  // !V8_TURBOFAN_BACKEND
 
+
+OutOfLineCode::OutOfLineCode(CodeGenerator* gen)
+    : masm_(gen->masm()), next_(gen->ools_) {
+  gen->ools_ = this;
+}
+
+
+OutOfLineCode::~OutOfLineCode() {}
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8