MIPS: Allow function inlining with context change.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 227f5f8a2bacfbf671104abdfb08155eae326150..38b0ff5274d4c44cda241072aa8e7a7ab05a54be 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -732,6 +732,10 @@ void LCodeGen::LoadContextFromDeferred(LOperand* context) {
     __ Move(cp, ToRegister(context));
   } else if (context->IsStackSlot()) {
     __ lw(cp, ToMemOperand(context));
+  } else if (context->IsConstantOperand()) {
+    HConstant* constant =
+        chunk_->LookupConstant(LConstantOperand::cast(context));
+    __ LoadObject(cp, Handle<Object>::cast(constant->handle(isolate())));
   } else {
     UNREACHABLE();
   }