[crankshaft] Remove useless HCallJSFunction instruction.

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

Index: src/crankshaft/ppc/lithium-codegen-ppc.cc
diff --git a/src/crankshaft/ppc/lithium-codegen-ppc.cc b/src/crankshaft/ppc/lithium-codegen-ppc.cc
index db1fe213a48754f9e8ebcdf0ce6b1d89934ee8f0..af31399d1fef14e3d441fdd3d63fc18b3637126b 100644
--- a/src/crankshaft/ppc/lithium-codegen-ppc.cc
+++ b/src/crankshaft/ppc/lithium-codegen-ppc.cc
@@ -3823,36 +3823,6 @@ void LCodeGen::DoCallWithDescriptor(LCallWithDescriptor* instr) {
 }
 
 
-void LCodeGen::DoCallJSFunction(LCallJSFunction* instr) {
-  DCHECK(ToRegister(instr->function()).is(r4));
-  DCHECK(ToRegister(instr->result()).is(r3));
-
-  // Change context.
-  __ LoadP(cp, FieldMemOperand(r4, JSFunction::kContextOffset));
-
-  // Always initialize new target and number of actual arguments.
-  __ LoadRoot(r6, Heap::kUndefinedValueRootIndex);
-  __ mov(r3, Operand(instr->arity()));
-
-  bool is_self_call = false;
-  if (instr->hydrogen()->function()->IsConstant()) {
-    HConstant* fun_const = HConstant::cast(instr->hydrogen()->function());
-    Handle<JSFunction> jsfun =
-        Handle<JSFunction>::cast(fun_const->handle(isolate()));
-    is_self_call = jsfun.is_identical_to(info()->closure());
-  }
-
-  if (is_self_call) {
-    __ CallSelf();
-  } else {
-    __ LoadP(ip, FieldMemOperand(r4, JSFunction::kCodeEntryOffset));
-    __ CallJSEntry(ip);
-  }
-
-  RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT);
-}
-
-
 void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   DCHECK(ToRegister(instr->context()).is(cp));
   DCHECK(ToRegister(instr->constructor()).is(r4));