Add a deoptimization count to each function to limit number of re-compilations.

src/hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1473 matching lines @@
         instr->Unlink();
         instr->InsertBefore(pre_header->end());
       }
     }
     instr = next;
   }
 }
 
 
 bool HGlobalValueNumberer::AllowCodeMotion() {
-  return info()->shared_info()->opt_count() + 1 < Compiler::kDefaultMaxOptCount;
+  int deopt_count = info()->shared_info()->deopt_count();
+  return deopt_count + 1 < Compiler::kDefaultMaxDeoptCount;
 }
 
 
 bool HGlobalValueNumberer::ShouldMove(HInstruction* instr,
                                       HBasicBlock* loop_header) {
   // If we've disabled code motion or we're in a block that unconditionally
   // deoptimizes, don't move any instructions.
   return AllowCodeMotion() && !instr->block()->IsDeoptimizing();
 }
 
@@ skipping 3336 matching lines @@
 
   int count_before = AstNode::Count();
 
   // Parse and allocate variables.
   CompilationInfo target_info(target);
   if (!ParserApi::Parse(&target_info, kNoParsingFlags) ||
       !Scope::Analyze(&target_info)) {
     if (target_info.isolate()->has_pending_exception()) {
       // Parse or scope error, never optimize this function.
       SetStackOverflow();
-      target_shared->DisableOptimization(*target);
+      target_shared->DisableOptimization();
     }
     TraceInline(target, caller, "parse failure");
     return false;
   }
 
   if (target_info.scope()->num_heap_slots() > 0) {
     TraceInline(target, caller, "target has context-allocated variables");
     return false;
   }
   FunctionLiteral* function = target_info.function();
@@ skipping 93 matching lines @@
   set_current_block(body_entry);
   AddInstruction(new(zone()) HEnterInlined(target,
                                            function,
                                            call_kind));
   VisitDeclarations(target_info.scope()->declarations());
   VisitStatements(function->body());
   if (HasStackOverflow()) {
     // Bail out if the inline function did, as we cannot residualize a call
     // instead.
     TraceInline(target, caller, "inline graph construction failed");
-    target_shared->DisableOptimization(*target);
+    target_shared->DisableOptimization();
     inline_bailout_ = true;
     delete target_state;
     return true;
   }
 
   // Update inlined nodes count.
   inlined_count_ += nodes_added;
 
   TraceInline(target, caller, NULL);
 
@@ skipping 2412 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify(false);  // No full verify.
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal