Implement inlining of constructor calls.

src/x64/builtins-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 311 matching lines @@
           masm->isolate()->builtins()->HandleApiCallConstruct();
       ParameterCount expected(0);
       __ InvokeCode(code, expected, expected, RelocInfo::CODE_TARGET,
                     CALL_FUNCTION, NullCallWrapper(), CALL_AS_METHOD);
     } else {
       ParameterCount actual(rax);
       __ InvokeFunction(rdi, actual, CALL_FUNCTION,
                         NullCallWrapper(), CALL_AS_METHOD);
     }
 
+    // Store offset of return address for deoptimizer.
+    // TODO(849): Once Generate_StringConstructCode doesn't reuse this
+    // generator, we can drop the third condition below!
+    if (!is_api_function && !count_constructions &&
+        masm->isolate()->heap()->construct_stub_deopt_pc_offset() == 0) {
+      masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset());
+    }
+
     // Restore context from the frame.
     __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
 
     // If the result is an object (in the ECMA sense), we should get rid
     // of the receiver and use the result; see ECMA-262 section 13.2.2-7
     // on page 74.
     Label use_receiver, exit;
     // If the result is a smi, it is *not* an object in the ECMA sense.
     __ JumpIfSmi(rax, &use_receiver);
 
@@ skipping 1160 matching lines @@
     __ j(less, &fill);
 
     // Restore function pointer.
     __ movq(rdi, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
   }
 
   // Call the entry point.
   __ bind(&invoke);
   __ call(rdx);
 
+  // Store offset of return address for deoptimizer.
   masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset());
+
   // Leave frame and return.
   LeaveArgumentsAdaptorFrame(masm);
   __ ret(0);
 
   // -------------------------------------------
   // Dont adapt arguments.
   // -------------------------------------------
   __ bind(&dont_adapt_arguments);
   __ jmp(rdx);
 }
@@ skipping 56 matching lines @@
   Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR);
   generator.Generate();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64