Do not directly load smi constants larger than a 16 bit payload on ia32.

runtime/vm/locations.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/locations.h"
 
 #include "vm/assembler.h"
 #include "vm/il_printer.h"
 #include "vm/intermediate_language.h"
 #include "vm/flow_graph_compiler.h"
@@ skipping 42 matching lines @@
   for (intptr_t i = 0; i < input_count; i++) {
     summary->set_in(i, Location::RequiresRegister());
   }
   summary->set_out(out);
   return summary;
 }
 
 
 Location Location::RegisterOrConstant(Value* value) {
   ConstantInstr* constant = value->definition()->AsConstant();
-  return (constant != NULL)
+  return ((constant != NULL) && Assembler::IsSafe(constant->value()))
       ? Location::Constant(constant->value())
       : Location::RequiresRegister();
 }
 
 
 Location Location::RegisterOrSmiConstant(Value* value) {
   ConstantInstr* constant = value->definition()->AsConstant();
-  return ((constant != NULL) && constant->value().IsSmi())
+  return ((constant != NULL) && Assembler::IsSafeSmi(constant->value()))
       ? Location::Constant(constant->value())
       : Location::RequiresRegister();
 }
 
 
 Location Location::FixedRegisterOrConstant(Value* value, Register reg) {
   ConstantInstr* constant = value->definition()->AsConstant();
-  return (constant != NULL)
+  return ((constant != NULL) && Assembler::IsSafe(constant->value()))
       ? Location::Constant(constant->value())
       : Location::RegisterLocation(reg);
 }
 
 
 Location Location::FixedRegisterOrSmiConstant(Value* value, Register reg) {
   ConstantInstr* constant = value->definition()->AsConstant();
-  return ((constant != NULL) && constant->value().IsSmi())
+  return ((constant != NULL) && Assembler::IsSafeSmi(constant->value()))
       ? Location::Constant(constant->value())
       : Location::RegisterLocation(reg);
 }
 
 
 Location Location::AnyOrConstant(Value* value) {
   ConstantInstr* constant = value->definition()->AsConstant();
-  return (constant != NULL)
+  return ((constant != NULL) && Assembler::IsSafe(constant->value()))
       ? Location::Constant(constant->value())
       : Location::Any();
 }
 
 
 Address Location::ToStackSlotAddress() const {
   const intptr_t index = stack_index();
   if (index < 0) {
     const intptr_t offset = (kParamEndSlotFromFp - index)  * kWordSize;
     return Address(FPREG, offset);
@@ skipping 89 matching lines @@
 
   if (!out().IsInvalid()) {
     f->Print(" => ");
     out().PrintTo(f);
   }
 
   if (always_calls()) f->Print(" C");
 }
 
 }  // namespace dart