Revert r9619.

src/hydrogen.cc

 // Copyright 2011 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 4521 matching lines @@
     TraceInline(target, caller, "target text too big");
     return false;
   }
 
   // Target must be inlineable.
   if (!target->IsInlineable()) {
     TraceInline(target, caller, "target not inlineable");
     return false;
   }
 
+  CompilationInfo* outer_info = info();
 #if !defined(V8_TARGET_ARCH_IA32)
   // Target must be able to use caller's context.
-  CompilationInfo* outer_info = info();
   if (target->context() != outer_info->closure()->context() ||
       outer_info->scope()->contains_with() ||
       outer_info->scope()->num_heap_slots() > 0) {
     TraceInline(target, caller, "target requires context change");
     return false;
   }
 #endif
 
 
   // Don't inline deeper than kMaxInliningLevels calls.
   HEnvironment* env = environment();
   int current_level = 1;
   while (env->outer() != NULL) {
     if (current_level == Compiler::kMaxInliningLevels) {
       TraceInline(target, caller, "inline depth limit reached");
       return false;
     }
     current_level++;
     env = env->outer();
   }
 
   // Don't inline recursive functions.
-  for (FunctionState* state = function_state();
-       state != NULL;
-       state = state->outer()) {
-    if (state->compilation_info()->closure()->shared() == *target_shared) {
-      TraceInline(target, caller, "target is recursive");
-      return false;
-    }
+  if (*target_shared == outer_info->closure()->shared()) {
+    TraceInline(target, caller, "target is recursive");
+    return false;
   }
 
   // We don't want to add more than a certain number of nodes from inlining.
   if (FLAG_limit_inlining && inlined_count_ > kMaxInlinedNodes) {
     TraceInline(target, caller, "cumulative AST node limit reached");
     return false;
   }
 
   int count_before = AstNode::Count();
 
@@ skipping 484 matching lines @@
       HGlobalObject* global = new(zone()) HGlobalObject(context);
       HGlobalReceiver* receiver = new(zone()) HGlobalReceiver(global);
       AddInstruction(global);
       PushAndAdd(receiver);
       CHECK_ALIVE(VisitExpressions(expr->arguments()));
       AddInstruction(new(zone()) HCheckFunction(function, expr->target()));
       if (TryInline(expr)) {
         // The function is lingering in the deoptimization environment.
         // Handle it by case analysis on the AST context.
         if (ast_context()->IsEffect()) {
-          if (current_block() == NULL) return;
-          ASSERT(Top() == function);
           Drop(1);
         } else if (ast_context()->IsValue()) {
-          if (current_block() == NULL) return;
           HValue* result = Pop();
-          ASSERT(Top() == function);
           Drop(1);
           Push(result);
         } else if (ast_context()->IsTest()) {
-          ASSERT(current_block() == NULL);
           TestContext* context = TestContext::cast(ast_context());
-          if (context->if_true()->HasPredecessor() &&
-              context->if_true()->last_environment()->Top() == function) {
+          if (context->if_true()->HasPredecessor()) {
             context->if_true()->last_environment()->Drop(1);
           }
-          if (context->if_false()->HasPredecessor() &&
-              context->if_false()->last_environment()->Top() == function) {
-            context->if_false()->last_environment()->Drop(1);
+          if (context->if_false()->HasPredecessor()) {
+            context->if_true()->last_environment()->Drop(1);
           }
         } else {
           UNREACHABLE();
         }
         return;
       } else {
         call = PreProcessCall(new(zone()) HInvokeFunction(context,
                                                           function,
                                                           argument_count));
         Drop(1);  // The function.
@@ skipping 199 matching lines @@
   if (info.IsUninitialized()) {
     AddInstruction(new(zone()) HSoftDeoptimize);
     current_block()->MarkAsDeoptimizing();
   }
   HInstruction* instr = new(zone()) HBitNot(value);
   return ast_context()->ReturnInstruction(instr, expr->id());
 }
 
 
 void HGraphBuilder::VisitNot(UnaryOperation* expr) {
+  // TODO(svenpanne) Perhaps a switch/virtual function is nicer here.
   if (ast_context()->IsTest()) {
     TestContext* context = TestContext::cast(ast_context());
     VisitForControl(expr->expression(),
                     context->if_false(),
                     context->if_true());
     return;
   }
 
   if (ast_context()->IsEffect()) {
     VisitForEffect(expr->expression());
@@ skipping 1661 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify(false);  // No full verify.
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal