Use object pool for runtime calls.

runtime/vm/assembler_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"  // NOLINT
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/heap.h"
@@ skipping 3188 matching lines @@
     pushq(TMP);  // Preserve TMP register.
     pushq(RDI);  // Preserve RDI register.
     if (fixed_length_encoding) {
       AssemblerBuffer::EnsureCapacity ensured(&buffer_);
       EmitRegisterREX(RDI, REX_W);
       EmitUint8(0xB8 | (RDI & 7));
       EmitInt64(message_address);
     } else {
       LoadImmediate(RDI, Immediate(message_address), PP);
     }
-    call(&StubCode::PrintStopMessageLabel());
+    call(&Isolate::Current()->stub_code()->PrintStopMessageLabel());
     popq(RDI);  // Restore RDI register.
     popq(TMP);  // Restore TMP register.
   } else {
     // Emit the lower half and the higher half of the message address as
     // immediate operands in the test rax instructions.
     testl(RAX, Immediate(Utils::Low32Bits(message_address)));
     testl(RAX, Immediate(Utils::High32Bits(message_address)));
   }
   // Emit the int3 instruction.
   int3();  // Execution can be resumed with the 'cont' command in gdb.
@@ skipping 217 matching lines @@
     prologue_offset_ = CodeSize();
   }
   movq(Address(RBP, kPcMarkerSlotFromFp * kWordSize), pc_marker_override);
   movq(PP, new_pp);
   if (extra_size != 0) {
     subq(RSP, Immediate(extra_size));
   }
 }
 
 
-void Assembler::EnterStubFrame(bool load_pp) {
+void Assembler::EnterStubFrame() {
   EnterFrame(0);
   pushq(Immediate(0));  // Push 0 in the saved PC area for stub frames.
   pushq(PP);  // Save caller's pool pointer
-  if (load_pp) {
-    LoadPoolPointer(PP);
-  }
+  LoadPoolPointer(PP);
 }
 
 
 void Assembler::LeaveStubFrame() {
   // Restore caller's PP register that was pushed in EnterStubFrame.
   movq(PP, Address(RBP, (kSavedCallerPpSlotFromFp * kWordSize)));
   LeaveFrame();
 }
 
 
@@ skipping 464 matching lines @@
 
 
 const char* Assembler::FpuRegisterName(FpuRegister reg) {
   ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters));
   return xmm_reg_names[reg];
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64