VM: Share object pool entries for optimized static calls.

runtime/vm/assembler_mips.h

Index: runtime/vm/assembler_mips.h
diff --git a/runtime/vm/assembler_mips.h b/runtime/vm/assembler_mips.h
index 382d8339393e525595da77b3473bca7aa114bbde..5cef8b6430d262ed952c1dbf4225f0197b3fac71 100644
--- a/runtime/vm/assembler_mips.h
+++ b/runtime/vm/assembler_mips.h
@@ -926,6 +926,11 @@ class Assembler : public ValueObject {
 
   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);
+
   void Drop(intptr_t stack_elements) {
     ASSERT(stack_elements >= 0);
     if (stack_elements > 0) {