Enables V8 integration with the Intel VTune performance analysis tool. This allows the VTune profi…

src/x64/lithium-codegen-x64.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 226 matching lines @@
     LInstruction* instr = instructions_->at(current_instruction_);
     if (instr->IsLabel()) {
       LLabel* label = LLabel::cast(instr);
       emit_instructions = !label->HasReplacement();
     }
 
     if (emit_instructions) {
       Comment(";;; @%d: %s.", current_instruction_, instr->Mnemonic());
       instr->CompileToNative(this);
     }
+#ifdef ENABLE_VTUNE_JIT_INTERFACE
+    if (instr->HasPointerMap()) {
+      LPointerMap* pointers = instr->pointer_map();
+      if (pointers->position() != RelocInfo::kNoPosition) {
+        RecordPosition(pointers->position());
+      }
+    }
+#endif
   }
   EnsureSpaceForLazyDeopt(Deoptimizer::patch_size());
   return !is_aborted();
 }
 
 
 bool LCodeGen::GenerateJumpTable() {
   for (int i = 0; i < jump_table_.length(); i++) {
     __ bind(&jump_table_[i].label);
     __ Jump(jump_table_[i].address, RelocInfo::RUNTIME_ENTRY);
@@ skipping 4820 matching lines @@
                                FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64