[crankshaft] Remove useless HCallFunction instruction.

src/crankshaft/arm64/lithium-codegen-arm64.cc

Index: src/crankshaft/arm64/lithium-codegen-arm64.cc
diff --git a/src/crankshaft/arm64/lithium-codegen-arm64.cc b/src/crankshaft/arm64/lithium-codegen-arm64.cc
index 6399a8bb09abb724afb1529165cbd88d955e8657..3a4cb1eeb22a1d546784035977ad45d4c1274930 100644
--- a/src/crankshaft/arm64/lithium-codegen-arm64.cc
+++ b/src/crankshaft/arm64/lithium-codegen-arm64.cc
@@ -359,38 +359,6 @@ void LCodeGen::CallCodeGeneric(Handle<Code> code,
 }
 
 
-void LCodeGen::DoCallFunction(LCallFunction* instr) {
-  HCallFunction* hinstr = instr->hydrogen();
-  DCHECK(ToRegister(instr->context()).is(cp));
-  DCHECK(ToRegister(instr->function()).Is(x1));
-  DCHECK(ToRegister(instr->result()).Is(x0));
-
-  int arity = instr->arity();
-  ConvertReceiverMode mode = hinstr->convert_mode();
-  if (hinstr->HasVectorAndSlot()) {
-    Register slot_register = ToRegister(instr->temp_slot());
-    Register vector_register = ToRegister(instr->temp_vector());
-    DCHECK(slot_register.is(x3));
-    DCHECK(vector_register.is(x2));
-
-    AllowDeferredHandleDereference vector_structure_check;
-    Handle<TypeFeedbackVector> vector = hinstr->feedback_vector();
-    int index = vector->GetIndex(hinstr->slot());
-
-    __ Mov(vector_register, vector);
-    __ Mov(slot_register, Operand(Smi::FromInt(index)));
-
-    Handle<Code> ic =
-        CodeFactory::CallICInOptimizedCode(isolate(), arity, mode).code();
-    CallCode(ic, RelocInfo::CODE_TARGET, instr);
-  } else {
-    __ Mov(x0, arity);
-    CallCode(isolate()->builtins()->Call(mode), RelocInfo::CODE_TARGET, instr);
-  }
-  RecordPushedArgumentsDelta(hinstr->argument_delta());
-}
-
-
 void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   DCHECK(instr->IsMarkedAsCall());
   DCHECK(ToRegister(instr->context()).is(cp));