MIPS: Re-land Crankshaft-generated KeyedLoad stubs.

src/mips/lithium-mips.h

Index: src/mips/lithium-mips.h
diff --git a/src/mips/lithium-mips.h b/src/mips/lithium-mips.h
index b2ed72a563b32c1c079b9cfa0d66b285f7423140..759cae2de7b7ad626768bc76136363b041ee5f18 100644
--- a/src/mips/lithium-mips.h
+++ b/src/mips/lithium-mips.h
@@ -252,6 +252,11 @@ class LInstruction: public ZoneObject {
   void MarkAsCall() { is_call_ = true; }
 
   // Interface to the register allocator and iterators.
+  bool ClobbersTemps() const { return is_call_; }
+  bool ClobbersRegisters() const { return is_call_; }
+  bool ClobbersDoubleRegisters() const { return is_call_; }
+
+  // Interface to the register allocator and iterators.
   bool IsMarkedAsCall() const { return is_call_; }
 
   virtual bool HasResult() const = 0;
@@ -2304,8 +2309,9 @@ class LOsrEntry: public LTemplateInstruction<0, 0, 0> {
   // slot, i.e., that must also be restored to the spill slot on OSR entry.
   // NULL if the register has no assigned spill slot.  Indexed by allocation
   // index.
-  LOperand* register_spills_[Register::kNumAllocatableRegisters];
-  LOperand* double_register_spills_[DoubleRegister::kNumAllocatableRegisters];
+  LOperand* register_spills_[Register::kMaxNumAllocatableRegisters];
+  LOperand* double_register_spills_[
+      DoubleRegister::kMaxNumAllocatableRegisters];
 };