Reland "[turbofan] Discard the shared code entry in the optimized code map."

src/compiler.cc

 // Copyright 2012 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.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "src/asmjs/asm-js.h"
@@ skipping 477 matching lines @@
   // from bytecode offset and overlap with actual BailoutId. No caching!
   if (info->is_osr() && info->is_optimizing_from_bytecode()) return;
 
   // Cache optimized context-specific code.
   Handle<JSFunction> function = info->closure();
   Handle<SharedFunctionInfo> shared(function->shared());
   Handle<LiteralsArray> literals(function->literals());
   Handle<Context> native_context(function->context()->native_context());
   SharedFunctionInfo::AddToOptimizedCodeMap(shared, native_context, code,
                                             literals, info->osr_ast_id());
-
-  // Do not cache (native) context-independent code compiled for OSR.
-  if (code->is_turbofanned() && info->is_osr()) return;
-
-  // Cache optimized (native) context-independent code.
-  if (FLAG_turbo_cache_shared_code && code->is_turbofanned() &&
-      !info->is_native_context_specializing()) {
-    DCHECK(!info->is_function_context_specializing());
-    DCHECK(info->osr_ast_id().IsNone());
-    Handle<SharedFunctionInfo> shared(function->shared());
-    SharedFunctionInfo::AddSharedCodeToOptimizedCodeMap(shared, code);
-  }
 }
 
 bool Renumber(ParseInfo* parse_info) {
   // Create a canonical handle scope if compiling ignition bytecode. This is
   // required by the constant array builder to de-duplicate objects without
   // dereferencing handles.
   std::unique_ptr<CanonicalHandleScope> canonical;
   if (FLAG_ignition) {
     canonical.reset(new CanonicalHandleScope(parse_info->isolate()));
   }
@@ skipping 1368 matching lines @@
     DCHECK(shared->is_compiled());
     function->set_literals(cached.literals);
   } else if (shared->is_compiled()) {
     // TODO(mvstanton): pass pretenure flag to EnsureLiterals.
     JSFunction::EnsureLiterals(function);
   }
 }
 
 }  // namespace internal
 }  // namespace v8