[Turbofan] Insert nops for lazy bailout patching, fix translation of literals.

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(InstructionSequence* code)
     : code_(code),
       current_block_(NULL),
       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()) {}
+      translations_(code->zone()),
+      last_lazy_deopt_pc_(0) {}
 
 
 Handle<Code> CodeGenerator::GenerateCode() {
   CompilationInfo* info = linkage()->info();
 
   // Emit a code line info recording start event.
   PositionsRecorder* recorder = masm()->positions_recorder();
   LOG_CODE_EVENT(isolate(), CodeStartLinePosInfoRecordEvent(recorder));
 
   // Place function entry hook if requested to do so.
@@ skipping 200 matching lines @@
 
   RecordSafepoint(
       instr->pointer_map(), Safepoint::kSimple, 0,
       needs_frame_state ? Safepoint::kLazyDeopt : Safepoint::kNoLazyDeopt);
 
   if (flags & CallDescriptor::kNeedsNopAfterCall) {
     AddNopForSmiCodeInlining();
   }
 
   if (needs_frame_state) {
+    MarkLazyDeoptSite();
     // If the frame state is present, it starts at argument 1
     // (just after the code address).
     InstructionOperandConverter converter(this, instr);
     // Deoptimization info starts at argument 1
     size_t frame_state_offset = 1;
     FrameStateDescriptor* descriptor =
         GetFrameStateDescriptor(instr, frame_state_offset);
     int pc_offset = masm()->pc_offset();
     int deopt_state_id = BuildTranslation(instr, pc_offset, frame_state_offset,
                                           descriptor->state_combine());
@@ skipping 125 matching lines @@
   } else if (op->IsImmediate()) {
     InstructionOperandConverter converter(this, instr);
     Constant constant = converter.ToConstant(op);
     Handle<Object> constant_object;
     switch (constant.type()) {
       case Constant::kInt32:
         constant_object =
             isolate()->factory()->NewNumberFromInt(constant.ToInt32());
         break;
       case Constant::kFloat64:
-        constant_object =
-            isolate()->factory()->NewHeapNumber(constant.ToFloat64());
+        constant_object = isolate()->factory()->NewNumber(constant.ToFloat64());
         break;
       case Constant::kHeapObject:
         constant_object = constant.ToHeapObject();
         break;
       default:
         UNREACHABLE();
     }
     int literal_id = DefineDeoptimizationLiteral(constant_object);
     translation->StoreLiteral(literal_id);
   } else {
     UNREACHABLE();
   }
 }
 
+
+void CodeGenerator::MarkLazyDeoptSite() {
+  last_lazy_deopt_pc_ = masm()->pc_offset();
+}
+
 #if !V8_TURBOFAN_BACKEND
 
 void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
   UNIMPLEMENTED();
 }
 
 
 void CodeGenerator::AssembleArchBranch(Instruction* instr,
                                        FlagsCondition condition) {
   UNIMPLEMENTED();
@@ skipping 29 matching lines @@
 }
 
 
 void CodeGenerator::AddNopForSmiCodeInlining() { UNIMPLEMENTED(); }
 
 #endif  // !V8_TURBOFAN_BACKEND
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8