[turbofan] First shot at eager deoptimization in Turbofan.

src/compiler/x64/code-generator-x64.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/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/scopes.h"
@@ skipping 537 matching lines @@
       break;
     case kArchLookupSwitch:
       AssembleArchLookupSwitch(instr);
       break;
     case kArchTableSwitch:
       AssembleArchTableSwitch(instr);
       break;
     case kArchNop:
       // don't emit code for nops.
       break;
+    case kArchDeoptimize: {
+      int deopt_state_id =
+          BuildTranslation(instr, -1, 0, OutputFrameStateCombine::Ignore());
+      AssembleDeoptimizerCall(deopt_state_id, Deoptimizer::EAGER);
+      break;
+    }
     case kArchRet:
       AssembleReturn();
       break;
     case kArchStackPointer:
       __ movq(i.OutputRegister(), rsp);
       break;
     case kArchTruncateDoubleToI: {
       auto result = i.OutputRegister();
       auto input = i.InputDoubleRegister(0);
       auto ool = new (zone()) OutOfLineTruncateDoubleToI(this, result, input);
@@ skipping 590 matching lines @@
     cases[index] = GetLabel(i.InputRpo(index + 2));
   }
   Label* const table = AddJumpTable(cases, case_count);
   __ cmpl(input, Immediate(case_count));
   __ j(above_equal, GetLabel(i.InputRpo(1)));
   __ leaq(kScratchRegister, Operand(table));
   __ jmp(Operand(kScratchRegister, input, times_8, 0));
 }
 
 
-void CodeGenerator::AssembleDeoptimizerCall(int deoptimization_id) {
+void CodeGenerator::AssembleDeoptimizerCall(
+    int deoptimization_id, Deoptimizer::BailoutType bailout_type) {
   Address deopt_entry = Deoptimizer::GetDeoptimizationEntry(
-      isolate(), deoptimization_id, Deoptimizer::LAZY);
+      isolate(), deoptimization_id, bailout_type);
   __ call(deopt_entry, RelocInfo::RUNTIME_ENTRY);
 }
 
 
 void CodeGenerator::AssemblePrologue() {
   CallDescriptor* descriptor = linkage()->GetIncomingDescriptor();
   int stack_slots = frame()->GetSpillSlotCount();
   if (descriptor->kind() == CallDescriptor::kCallAddress) {
     __ pushq(rbp);
     __ movq(rbp, rsp);
@@ skipping 254 matching lines @@
     }
   }
   MarkLazyDeoptSite();
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8