Simplify constant pool usage in x64 code generator (by removing extra argument

runtime/vm/instructions_x64_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/instructions.h"
 #include "vm/stub_code.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 #define __ assembler->
 
 ASSEMBLER_TEST_GENERATE(Call, assembler) {
   __ call(&StubCode::InvokeDartCodeLabel());
   __ ret();
 }
 
 
 static intptr_t prologue_code_size = -1;
 
 
 ASSEMBLER_TEST_GENERATE(Jump, assembler) {
   ASSERT(assembler->CodeSize() == 0);
   __ pushq(PP);
-  __ LoadPoolPointer(PP);
+  __ LoadPoolPointer();
   prologue_code_size = assembler->CodeSize();
   __ JmpPatchable(&StubCode::InvokeDartCodeLabel(), PP);
   const ExternalLabel array_label(StubCode::AllocateArrayEntryPoint());
   __ JmpPatchable(&array_label, PP);
   __ popq(PP);
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(Jump, test) {
@@ skipping 20 matching lines @@
   jump1.SetTargetAddress(target2);
   jump2.SetTargetAddress(target1);
   EXPECT_EQ(array_stub.EntryPoint(), jump1.TargetAddress());
   EXPECT_EQ(StubCode::InvokeDartCodeLabel().address(),
             jump2.TargetAddress());
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64