Use explicit push-argument for InstanceSetter instruction.

vm/intermediate_language_x64.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"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 2132 matching lines @@
       LocationSummary* locs =
           new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
       locs->set_in(0, Location::RegisterLocation(RAX));
       locs->set_in(1, Location::RegisterLocation(RCX));
       locs->set_temp(0, Location::RegisterLocation(RDX));
       return locs;
     }
     // Otherwise polymorphic dispatch.
   }
   // Call.
-  LocationSummary* result = new LocationSummary(0, 0, LocationSummary::kCall);
-  result->set_out(Location::RegisterLocation(RAX));
-  return result;
+  return Computation::MakeCallSummary();
 }
 
 
 void BranchInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   if ((kind() == Token::kEQ_STRICT) || (kind() == Token::kNE_STRICT)) {
     Register left = locs()->in(0).reg();
     Register right = locs()->in(1).reg();
     __ cmpq(left, right);
     Condition cond = (kind() == Token::kEQ_STRICT) ? EQUAL : NOT_EQUAL;
     EmitBranchOnCondition(compiler, cond);
@@ skipping 40 matching lines @@
   ASSERT(locs()->out().reg() == RAX);
   __ CompareObject(locs()->out().reg(), compiler->bool_true());
   EmitBranchOnCondition(compiler, branch_condition);
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64