MIPS: Fix secondary stub cache and add a test for the stub cache lookups.

src/mips/ic-mips.cc

Index: src/mips/ic-mips.cc
diff --git a/src/mips/ic-mips.cc b/src/mips/ic-mips.cc
index c3cdb4cd388310a767a7f7f9d96ad4390972c4d7..2dd0522247362348deae6fe27e4ab9fc19770636 100644
--- a/src/mips/ic-mips.cc
+++ b/src/mips/ic-mips.cc
@@ -401,7 +401,7 @@ void CallICBase::GenerateMonomorphicCacheProbe(MacroAssembler* masm,
                                          NORMAL,
                                          argc);
   Isolate::Current()->stub_cache()->GenerateProbe(
-      masm, flags, a1, a2, a3, t0, t1);
+      masm, flags, a1, a2, a3, t0, t1, t2);
 
   // If the stub cache probing failed, the receiver might be a value.
   // For value objects, we use the map of the prototype objects for
@@ -437,7 +437,7 @@ void CallICBase::GenerateMonomorphicCacheProbe(MacroAssembler* masm,
   // Probe the stub cache for the value object.
   __ bind(&probe);
   Isolate::Current()->stub_cache()->GenerateProbe(
-      masm, flags, a1, a2, a3, t0, t1);
+      masm, flags, a1, a2, a3, t0, t1, t2);
 
   __ bind(&miss);
 }
@@ -702,7 +702,7 @@ void LoadIC::GenerateMegamorphic(MacroAssembler* masm) {
   // Probe the stub cache.
   Code::Flags flags = Code::ComputeFlags(Code::LOAD_IC, MONOMORPHIC);
   Isolate::Current()->stub_cache()->GenerateProbe(
-      masm, flags, a0, a2, a3, t0, t1);
+      masm, flags, a0, a2, a3, t0, t1, t2);
 
   // Cache miss: Jump to runtime.
   GenerateMiss(masm);
@@ -1513,7 +1513,7 @@ void StoreIC::GenerateMegamorphic(MacroAssembler* masm,
   Code::Flags flags =
       Code::ComputeFlags(Code::STORE_IC, MONOMORPHIC, strict_mode);
   Isolate::Current()->stub_cache()->GenerateProbe(
-      masm, flags, a1, a2, a3, t0, t1);
+      masm, flags, a1, a2, a3, t0, t1, t2);
 
   // Cache miss: Jump to runtime.
   GenerateMiss(masm);