[crankshaft] Remove useless HCallJSFunction instruction.

src/crankshaft/x64/lithium-codegen-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/crankshaft/x64/lithium-codegen-x64.h"
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 3245 matching lines @@
       Register target = ToRegister(instr->target());
       generator.BeforeCall(__ CallSize(target));
       __ addp(target, Immediate(Code::kHeaderSize - kHeapObjectTag));
       __ call(target);
     }
     generator.AfterCall();
   }
 }
 
 
-void LCodeGen::DoCallJSFunction(LCallJSFunction* instr) {
-  DCHECK(ToRegister(instr->function()).is(rdi));
-  DCHECK(ToRegister(instr->result()).is(rax));
-
-  // Change context.
-  __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
-
-  // Always initialize new target and number of actual arguments.
-  __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex);
-  __ Set(rax, instr->arity());
-
-  LPointerMap* pointers = instr->pointer_map();
-  SafepointGenerator generator(this, pointers, Safepoint::kLazyDeopt);
-
-  bool is_self_call = false;
-  if (instr->hydrogen()->function()->IsConstant()) {
-    Handle<JSFunction> jsfun = Handle<JSFunction>::null();
-    HConstant* fun_const = HConstant::cast(instr->hydrogen()->function());
-    jsfun = Handle<JSFunction>::cast(fun_const->handle(isolate()));
-    is_self_call = jsfun.is_identical_to(info()->closure());
-  }
-
-  if (is_self_call) {
-    __ CallSelf();
-  } else {
-    Operand target = FieldOperand(rdi, JSFunction::kCodeEntryOffset);
-    generator.BeforeCall(__ CallSize(target));
-    __ Call(target);
-  }
-  generator.AfterCall();
-}
-
-
 void LCodeGen::DoDeferredMathAbsTaggedHeapNumber(LMathAbs* instr) {
   Register input_reg = ToRegister(instr->value());
   __ CompareRoot(FieldOperand(input_reg, HeapObject::kMapOffset),
                  Heap::kHeapNumberMapRootIndex);
   DeoptimizeIf(not_equal, instr, Deoptimizer::kNotAHeapNumber);
 
   Label slow, allocated, done;
   Register tmp = input_reg.is(rax) ? rcx : rax;
   Register tmp2 = tmp.is(rcx) ? rdx : input_reg.is(rcx) ? rdx : rcx;
 
@@ skipping 2238 matching lines @@
   __ movp(Operand(rbp, StandardFrameConstants::kContextOffset), context);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64