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

src/arm/ic-arm.cc

Index: src/arm/ic-arm.cc
===================================================================
--- src/arm/ic-arm.cc	(revision 10860)
+++ src/arm/ic-arm.cc	(working copy)
@@ -399,7 +399,7 @@
                                          NORMAL,
                                          argc);
   Isolate::Current()->stub_cache()->GenerateProbe(
-      masm, flags, r1, r2, r3, r4, r5);
+      masm, flags, r1, r2, r3, r4, r5, r6);
 
   // If the stub cache probing failed, the receiver might be a value.
   // For value objects, we use the map of the prototype objects for
@@ -438,7 +438,7 @@
   // Probe the stub cache for the value object.
   __ bind(&probe);
   Isolate::Current()->stub_cache()->GenerateProbe(
-      masm, flags, r1, r2, r3, r4, r5);
+      masm, flags, r1, r2, r3, r4, r5, r6);
 
   __ bind(&miss);
 }
@@ -706,7 +706,7 @@
   Code::Flags flags =
       Code::ComputeFlags(Code::LOAD_IC, MONOMORPHIC);
   Isolate::Current()->stub_cache()->GenerateProbe(
-      masm, flags, r0, r2, r3, r4, r5);
+      masm, flags, r0, r2, r3, r4, r5, r6);
 
   // Cache miss: Jump to runtime.
   GenerateMiss(masm);
@@ -1516,7 +1516,7 @@
       Code::ComputeFlags(Code::STORE_IC, MONOMORPHIC, strict_mode);
 
   Isolate::Current()->stub_cache()->GenerateProbe(
-      masm, flags, r1, r2, r3, r4, r5);
+      masm, flags, r1, r2, r3, r4, r5, r6);
 
   // Cache miss: Jump to runtime.
   GenerateMiss(masm);