VectorICs: keyed element loads were kicking out non-smi keys unnecessarily

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index 71daeccd6dbdb5cca4c000e3e4149bb486891d7b..782f2ad0e2603f827c0b685236981f4071cf31e3 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -4102,7 +4102,7 @@ void FullCodeGenerator::EmitStringCharCodeAt(CallRuntime* expr) {
   __ jmp(&done);
 
   NopRuntimeCallHelper call_helper;
-  generator.GenerateSlow(masm_, call_helper);
+  generator.GenerateSlow(masm_, NOT_PART_OF_IC_HANDLER, call_helper);
 
   __ bind(&done);
   context()->Plug(result);
@@ -4151,7 +4151,7 @@ void FullCodeGenerator::EmitStringCharAt(CallRuntime* expr) {
   __ jmp(&done);
 
   NopRuntimeCallHelper call_helper;
-  generator.GenerateSlow(masm_, call_helper);
+  generator.GenerateSlow(masm_, NOT_PART_OF_IC_HANDLER, call_helper);
 
   __ bind(&done);
   context()->Plug(result);