Store arguments descriptor in ICData. Remove loading of arguments descriptor at unoptimized call si…

runtime/vm/instructions_arm.cc

 // Copyright (c) 2013, 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"  // Needed here to get TARGET_ARCH_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/constants_arm.h"
 #include "vm/cpu.h"
 #include "vm/instructions.h"
@@ skipping 101 matching lines @@
 RawICData* CallPattern::IcData() {
   if (ic_data_.IsNull()) {
     Register reg;
     args_desc_load_end_ = DecodeLoadObject(ic_data_load_end_, &reg, &ic_data_);
     ASSERT(reg == R5);
   }
   return ic_data_.raw();
 }
 
 
-RawArray* CallPattern::ArgumentsDescriptor() {
+RawArray* CallPattern::ClosureArgumentsDescriptor() {
   if (args_desc_.IsNull()) {
     IcData();  // Loading of the ic_data must be decoded first, if not already.
     Register reg;
     DecodeLoadObject(args_desc_load_end_, &reg, &args_desc_);
     ASSERT(reg == R4);
   }
   return args_desc_.raw();
 }
 
 
@@ skipping 59 matching lines @@
   uword movt_ip = 0xe340c000 | ((target_hi >> 12) << 16) | (target_hi & 0xfff);
   *reinterpret_cast<uword*>(pc_ + (0 * Instr::kInstrSize)) = movw_ip;
   *reinterpret_cast<uword*>(pc_ + (1 * Instr::kInstrSize)) = movt_ip;
   CPU::FlushICache(pc_, 2 * Instr::kInstrSize);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM