Add Function based profile tree

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 959 matching lines @@
   // Sequence node has one store node and one return NULL node.
   __ Comment("Inlined Setter");
   __ movq(RAX, Address(RSP, 2 * kWordSize));  // Receiver.
   __ movq(RBX, Address(RSP, 1 * kWordSize));  // Value.
   __ StoreIntoObject(RAX, FieldAddress(RAX, offset), RBX);
   __ LoadObject(RAX, Object::null_object(), PP);
   __ ret();
 }
 
 
+// NOTE: If the entry code shape changes, ReturnAddressLocator in profiler.cc
+// needs to be updated to match.
 void FlowGraphCompiler::EmitFrameEntry() {
   ASSERT(Assembler::EntryPointToPcMarkerOffset() == 0);
 
   const Function& function = parsed_function().function();
   const Register new_pp = R13;
   const Register new_pc = R12;
 
   // Load PC marker.
   const intptr_t kRIPRelativeLeaqSize = 7;
   const intptr_t entry_to_rip_offset = __ CodeSize() + kRIPRelativeLeaqSize;
@@ skipping 794 matching lines @@
   __ movups(reg, Address(RSP, 0));
   __ AddImmediate(RSP, Immediate(kFpuRegisterSize), PP);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64