[turbofan] Optimize JSCallConstruct in typed lowering to direct calls.

src/mips/interface-descriptors-mips.cc

Index: src/mips/interface-descriptors-mips.cc
diff --git a/src/mips/interface-descriptors-mips.cc b/src/mips/interface-descriptors-mips.cc
index 3643a7337da7c5d67a9b83a1572a0f287e342b5f..bfe399e7b6980ba5c57ee298f3c7dd9c8dd54313 100644
--- a/src/mips/interface-descriptors-mips.cc
+++ b/src/mips/interface-descriptors-mips.cc
@@ -211,6 +211,17 @@ void CallTrampolineDescriptor::InitializePlatformSpecific(
 }
 
 
+void ConstructStubDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  // a1: target
+  // a3: new target
+  // a0: number of arguments
+  // a2: allocation site or undefined
+  Register registers[] = {a1, a3, a0, a2};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
 void ConstructTrampolineDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // a1: target