Optimize various forms of slice.call(arguments, ...)

src/objects-inl.h

 // 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 5326 matching lines @@
                         profiler_ticks,
                         kProfilerTicksOffset)
 
 #endif
 
 
 BOOL_GETTER(SharedFunctionInfo,
             compiler_hints,
             optimization_disabled,
             kOptimizationDisabled)
+BOOL_GETTER(SharedFunctionInfo,
+            compiler_hints,
+            optimistic_optimizations,
+            kOptimisticOptimizations)
+
+
+bool SharedFunctionInfo::use_optimistic_optimizations() {
+  return BooleanBit::get(compiler_hints(), kOptimisticOptimizations)
+      ? false : true;
+}
+
+
+void SharedFunctionInfo::disable_optimistic_optimizations() {
+  set_compiler_hints(BooleanBit::set(compiler_hints(),
+                                     kOptimisticOptimizations,
+                                     true));
+}
 
 
 void SharedFunctionInfo::set_optimization_disabled(bool disable) {
   set_compiler_hints(BooleanBit::set(compiler_hints(),
                                      kOptimizationDisabled,
                                      disable));
   // If disabling optimizations we reflect that in the code object so
   // it will not be counted as optimizable code.
   if ((code()->kind() == Code::FUNCTION) && disable) {
     code()->set_optimizable(false);
@@ skipping 1628 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_