[intrinsic] Drop the %_ValueOf intrinsic.

src/full-codegen/s390/full-codegen-s390.cc

 // Copyright 2015 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_S390
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 2768 matching lines @@
   // Non-JS objects have class null.
   __ bind(&null);
   __ LoadRoot(r2, Heap::kNullValueRootIndex);
 
   // All done.
   __ bind(&done);
 
   context()->Plug(r2);
 }
 
-void FullCodeGenerator::EmitValueOf(CallRuntime* expr) {
-  ZoneList<Expression*>* args = expr->arguments();
-  DCHECK(args->length() == 1);
-  VisitForAccumulatorValue(args->at(0));  // Load the object.
-
-  Label done;
-  // If the object is a smi return the object.
-  __ JumpIfSmi(r2, &done);
-  // If the object is not a value type, return the object.
-  __ CompareObjectType(r2, r3, r3, JS_VALUE_TYPE);
-  __ bne(&done, Label::kNear);
-  __ LoadP(r2, FieldMemOperand(r2, JSValue::kValueOffset));
-
-  __ bind(&done);
-  context()->Plug(r2);
-}
-
 void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 1);
   VisitForAccumulatorValue(args->at(0));
 
   Label done;
   StringCharFromCodeGenerator generator(r2, r3);
   generator.GenerateFast(masm_);
   __ b(&done);
 
@@ skipping 875 matching lines @@
   DCHECK(kOSRBranchInstruction == br_instr);
 
   DCHECK(interrupt_address ==
          isolate->builtins()->OnStackReplacement()->entry());
   return ON_STACK_REPLACEMENT;
 }
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_TARGET_ARCH_S390