MIPS: Implement target cache for constructor calls.

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 da3be4c23e62c0165bfe6b79f97f19d6486361ac..201742efec74a2c7e98d50c030645f794155be42 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -2403,9 +2403,22 @@ void FullCodeGenerator::VisitCallNew(CallNew* expr) {
   __ li(a0, Operand(arg_count));
   __ lw(a1, MemOperand(sp, arg_count * kPointerSize));
 
-  Handle<Code> construct_builtin =
-      isolate()->builtins()->JSConstructCall();
-  __ Call(construct_builtin, RelocInfo::CONSTRUCT_CALL);
+  // Record call targets in unoptimized code, but not in the snapshot.
+  CallFunctionFlags flags;
+  if (!Serializer::enabled()) {
+    flags = RECORD_CALL_TARGET;
+    Handle<Object> uninitialized =
+       TypeFeedbackCells::UninitializedSentinel(isolate());
+    Handle<JSGlobalPropertyCell> cell =
+        isolate()->factory()->NewJSGlobalPropertyCell(uninitialized);
+    RecordTypeFeedbackCell(expr->id(), cell);
+    __ li(a2, Operand(cell));
+  } else {
+    flags = NO_CALL_FUNCTION_FLAGS;
+  }
+
+  CallConstructStub stub(flags);
+  __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
   context()->Plug(v0);
 }