Stop passing location argument to run time calls, since it is stored in the pc

runtime/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 172 matching lines @@
   Register result = locs()->out().reg();
 
   // Check that the type of the value is allowed in conditional context.
   // Call the runtime if the object is not bool::true or bool::false.
   Label done;
   __ CompareObject(obj, compiler->bool_true());
   __ j(EQUAL, &done, Assembler::kNearJump);
   __ CompareObject(obj, compiler->bool_false());
   __ j(EQUAL, &done, Assembler::kNearJump);
 
-  __ pushq(Immediate(Smi::RawValue(token_pos())));  // Source location.
   __ pushq(obj);  // Push the source object.
   compiler->GenerateCallRuntime(cid(),
                                 token_pos(),
                                 try_index(),
                                 kConditionTypeErrorRuntimeEntry);
   // We should never return here.
   __ int3();
 
   __ Bind(&done);
   ASSERT(obj == result);
@@ skipping 859 matching lines @@
 
 void AllocateObjectWithBoundsCheckComp::EmitNativeCode(
     FlowGraphCompiler* compiler) {
   const Class& cls = Class::ZoneHandle(constructor().owner());
   Register type_arguments = locs()->in(0).reg();
   Register instantiator_type_arguments = locs()->in(1).reg();
   Register result = locs()->out().reg();
 
   // Push the result place holder initialized to NULL.
   __ PushObject(Object::ZoneHandle());
-  __ pushq(Immediate(Smi::RawValue(token_pos())));
   __ PushObject(cls);
   __ pushq(type_arguments);
   __ pushq(instantiator_type_arguments);
   compiler->GenerateCallRuntime(cid(),
                                 token_pos(),
                                 try_index(),
                                 kAllocateObjectWithBoundsCheckRuntimeEntry);
-  // Pop instantiator type arguments, type arguments, class, and
-  // source location.
-  __ Drop(4);
+  // Pop instantiator type arguments, type arguments, and class.
+  __ Drop(3);
   __ popq(result);  // Pop new instance.
 }
 
 
 LocationSummary* LoadVMFieldComp::MakeLocationSummary() const {
   return LocationSummary::Make(1, Location::RequiresRegister());
 }
 
 
 void LoadVMFieldComp::EmitNativeCode(FlowGraphCompiler* compiler) {
@@ skipping 884 matching lines @@
                                  instance_call()->argument_names());
   }
   __ Bind(&done);
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64