VM: Share object pool entries for optimized static calls.

runtime/vm/assembler_mips.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_MIPS)
 
 #include "vm/assembler.h"
 #include "vm/longjump.h"
 #include "vm/runtime_entry.h"
@@ skipping 518 matching lines @@
                            Patchability patchable) {
   BranchLink(Code::Handle(stub_entry.code()), patchable);
 }
 
 
 void Assembler::BranchLinkPatchable(const StubEntry& stub_entry) {
   BranchLink(Code::Handle(stub_entry.code()), kPatchable);
 }
 
 
+void Assembler::BranchLinkWithEquivalence(const StubEntry& stub_entry,
+                                          const Object& equivalence) {
+  const Code& target = Code::Handle(stub_entry.code());
+  ASSERT(!in_delay_slot_);
+  const int32_t offset = ObjectPool::element_offset(
+      object_pool_wrapper_.FindObject(target, equivalence));
+  LoadWordFromPoolOffset(CODE_REG, offset - kHeapObjectTag);
+  lw(T9, FieldAddress(CODE_REG, Code::entry_point_offset()));
+  jalr(T9);
+  delay_slot_available_ = false;  // CodePatcher expects a nop.
+}
+
+
 bool Assembler::CanLoadFromObjectPool(const Object& object) const {
   ASSERT(!object.IsICData() || ICData::Cast(object).IsOriginal());
   ASSERT(!Thread::CanLoadFromThread(object));
   if (!constant_pool_allowed()) {
     return false;
   }
 
   ASSERT(object.IsNotTemporaryScopedHandle());
   ASSERT(object.IsOld());
   return true;
@@ skipping 792 matching lines @@
   Label stop;
   b(&stop);
   Emit(reinterpret_cast<int32_t>(message));
   Bind(&stop);
   break_(Instr::kStopMessageCode);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS