[interpreter] Implement OSR graph construction from bytecode.

src/compiler/osr.cc

 // Copyright 2014 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/ast/scopes.h"
 #include "src/compiler.h"
 #include "src/compiler/all-nodes.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/common-operator-reducer.h"
 #include "src/compiler/dead-code-elimination.h"
 #include "src/compiler/frame.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/graph-trimmer.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/loop-analysis.h"
 #include "src/compiler/node.h"
 #include "src/compiler/node-marker.h"
 #include "src/compiler/osr.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 OsrHelper::OsrHelper(CompilationInfo* info)
-    : parameter_count_(info->scope()->num_parameters()),
-      stack_slot_count_(info->scope()->num_stack_slots() +
-                        info->osr_expr_stack_height()) {}
-
+    : parameter_count_(
+          info->is_optimizing_from_bytecode()
+              ? info->shared_info()->bytecode_array()->parameter_count()
+              : info->scope()->num_parameters()),
+      stack_slot_count_(
+          info->is_optimizing_from_bytecode()
+              ? info->shared_info()->bytecode_array()->register_count() +
+                    InterpreterFrameConstants::kExtraSlotCount
+              : info->scope()->num_stack_slots() +
+                    info->osr_expr_stack_height()) {}
 
 #ifdef DEBUG
 #define TRACE_COND (FLAG_trace_turbo_graph && FLAG_trace_osr)
 #else
 #define TRACE_COND false
 #endif
 
 #define TRACE(...)                       \
   do {                                   \
     if (TRACE_COND) PrintF(__VA_ARGS__); \
@@ skipping 287 matching lines @@
 
 void OsrHelper::SetupFrame(Frame* frame) {
   // The optimized frame will subsume the unoptimized frame. Do so by reserving
   // the first spill slots.
   frame->ReserveSpillSlots(UnoptimizedFrameSlots());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8