[turbofan] Deopt support for escape analysis

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/address-map.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/pipeline.h"
@@ skipping 190 matching lines @@
 
   // Emit a code line info recording stop event.
   void* line_info = recorder->DetachJITHandlerData();
   LOG_CODE_EVENT(isolate(), CodeEndLinePosInfoRecordEvent(*result, line_info));
 
   return result;
 }
 
 
 bool CodeGenerator::IsNextInAssemblyOrder(RpoNumber block) const {
-  return code()->InstructionBlockAt(current_block_)->ao_number().IsNext(
-      code()->InstructionBlockAt(block)->ao_number());
+  return code()
+      ->InstructionBlockAt(current_block_)
+      ->ao_number()
+      .IsNext(code()->InstructionBlockAt(block)->ao_number());
 }
 
 
 void CodeGenerator::RecordSafepoint(ReferenceMap* references,
                                     Safepoint::Kind kind, int arguments,
                                     Safepoint::DeoptMode deopt_mode) {
   Safepoint safepoint =
       safepoints()->DefineSafepoint(masm(), kind, arguments, deopt_mode);
   int stackSlotToSpillSlotDelta =
       frame()->GetTotalFrameSlotCount() - frame()->GetSpillSlotCount();
@@ skipping 251 matching lines @@
 
 FrameStateDescriptor* CodeGenerator::GetFrameStateDescriptor(
     Instruction* instr, size_t frame_state_offset) {
   InstructionOperandConverter i(this, instr);
   InstructionSequence::StateId state_id =
       InstructionSequence::StateId::FromInt(i.InputInt32(frame_state_offset));
   return code()->GetFrameStateDescriptor(state_id);
 }
 
 
-namespace {
-
-struct OperandAndType {
-  InstructionOperand* const operand;
-  MachineType const type;
-};
-
-
-OperandAndType TypedOperandForFrameState(FrameStateDescriptor* descriptor,
-                                         Instruction* instr,
-                                         size_t frame_state_offset,
-                                         size_t index,
-                                         OutputFrameStateCombine combine) {
-  DCHECK(index < descriptor->GetSize(combine));
-  switch (combine.kind()) {
-    case OutputFrameStateCombine::kPushOutput: {
-      DCHECK(combine.GetPushCount() <= instr->OutputCount());
-      size_t size_without_output =
-          descriptor->GetSize(OutputFrameStateCombine::Ignore());
-      // If the index is past the existing stack items, return the output.
-      if (index >= size_without_output) {
-        return {instr->OutputAt(index - size_without_output), kMachAnyTagged};
-      }
-      break;
-    }
-    case OutputFrameStateCombine::kPokeAt:
-      size_t index_from_top =
-          descriptor->GetSize(combine) - 1 - combine.GetOffsetToPokeAt();
-      if (index >= index_from_top &&
-          index < index_from_top + instr->OutputCount()) {
-        return {instr->OutputAt(index - index_from_top), kMachAnyTagged};
-      }
-      break;
-  }
-  return {instr->InputAt(frame_state_offset + index),
-          descriptor->GetType(index)};
-}
-
-}  // namespace
-
-
 void CodeGenerator::BuildTranslationForFrameStateDescriptor(
     FrameStateDescriptor* descriptor, Instruction* instr,
     Translation* translation, size_t frame_state_offset,
     OutputFrameStateCombine state_combine) {
   // Outer-most state must be added to translation first.
   if (descriptor->outer_state() != nullptr) {
     BuildTranslationForFrameStateDescriptor(descriptor->outer_state(), instr,
                                             translation, frame_state_offset,
                                             OutputFrameStateCombine::Ignore());
   }
@@ skipping 18 matching lines @@
           shared_info_id,
           static_cast<unsigned int>(descriptor->parameters_count()));
       break;
     case FrameStateType::kConstructStub:
       translation->BeginConstructStubFrame(
           shared_info_id,
           static_cast<unsigned int>(descriptor->parameters_count()));
       break;
   }
 
-  for (size_t i = 0; i < descriptor->GetSize(state_combine); i++) {
-    OperandAndType op = TypedOperandForFrameState(
-        descriptor, instr, frame_state_offset, i, state_combine);
-    AddTranslationForOperand(translation, instr, op.operand, op.type);
-  }
+  descriptor->TranslateOperands(this, instr, frame_state_offset, state_combine,
+                                translation);
 }
 
 
 int CodeGenerator::BuildTranslation(Instruction* instr, int pc_offset,
                                     size_t frame_state_offset,
                                     OutputFrameStateCombine state_combine) {
   FrameStateDescriptor* descriptor =
       GetFrameStateDescriptor(instr, frame_state_offset);
   frame_state_offset++;
 
@@ skipping 113 matching lines @@
     : frame_(gen->frame()), masm_(gen->masm()), next_(gen->ools_) {
   gen->ools_ = this;
 }
 
 
 OutOfLineCode::~OutOfLineCode() {}
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8