VM: Share object pool entries for optimized static calls.

runtime/vm/assembler_arm64.h

 // Copyright (c) 2014, 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.
 
 #ifndef VM_ASSEMBLER_ARM64_H_
 #define VM_ASSEMBLER_ARM64_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_arm64.h directly; use assembler.h instead.
 #endif
@@ skipping 1195 matching lines @@
   void Branch(const StubEntry& stub_entry,
               Register pp,
               Patchability patchable = kNotPatchable);
   void BranchPatchable(const StubEntry& stub_entry);
 
   void BranchLink(const StubEntry& stub_entry,
                   Patchability patchable = kNotPatchable);
 
   void BranchLinkPatchable(const StubEntry& stub_entry);
 
+  // Emit a call that shares its object pool entries with other calls
+  // that have the same equivalence marker.
+  void BranchLinkWithEquivalence(const StubEntry& stub_entry,
+                                 const Object& equivalence);
+
   // Macros accepting a pp Register argument may attempt to load values from
   // the object pool when possible. Unless you are sure that the untagged object
   // pool pointer is in another register, or that it is not available at all,
   // PP should be passed for pp.
   void AddImmediate(Register dest, Register rn, int64_t imm);
   void AddImmediateSetFlags(Register dest, Register rn, int64_t imm);
   void SubImmediateSetFlags(Register dest, Register rn, int64_t imm);
   void AndImmediate(Register rd, Register rn, int64_t imm);
   void OrImmediate(Register rd, Register rn, int64_t imm);
   void XorImmediate(Register rd, Register rn, int64_t imm);
@@ skipping 701 matching lines @@
                                   Register value,
                                   Label* no_update);
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_ARM64_H_