Turn StoreIC::Megamorphic into a builtin, get rid of the non-monomorphic-cache

src/ic/mips64/ic-mips64.cc

Index: src/ic/mips64/ic-mips64.cc
diff --git a/src/ic/mips64/ic-mips64.cc b/src/ic/mips64/ic-mips64.cc
index 03e9d090f8172de569e0be6c26fe36008ee5f410..7c81c8c6787c781d4f1fd6deecb7e9aa760e8903 100644
--- a/src/ic/mips64/ic-mips64.cc
+++ b/src/ic/mips64/ic-mips64.cc
@@ -744,7 +744,7 @@ void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
   Code::Flags flags =
       Code::RemoveHolderFromFlags(Code::ComputeHandlerFlags(Code::STORE_IC));
   masm->isolate()->stub_cache()->GenerateProbe(masm, Code::STORE_IC, flags,
-                                               receiver, name, a3, a4, a5, a6);
+                                               receiver, name, a5, a6, a7, t0);
 
   // Cache miss: Jump to runtime.
   GenerateMiss(masm);