Support for unboxed 64-bit integer bitwise operations and equality on ia32.

runtime/vm/flow_graph_compiler_ia32.cc

Index: runtime/vm/flow_graph_compiler_ia32.cc
===================================================================
--- runtime/vm/flow_graph_compiler_ia32.cc	(revision 12765)
+++ runtime/vm/flow_graph_compiler_ia32.cc	(working copy)
@@ -22,8 +22,8 @@
 DECLARE_FLAG(bool, print_scopes);
 DECLARE_FLAG(bool, reject_named_argument_as_positional);
 DECLARE_FLAG(bool, trace_functions);
+DEFINE_FLAG(bool, trap_on_deoptimization, false, "Trap on deoptimization.");
 
-
 void CompilerDeoptInfoWithStub::GenerateCode(FlowGraphCompiler* compiler,
                                              intptr_t stub_ix) {
   // Calls do not need stubs, they share a deoptimization trampoline.
@@ -32,6 +32,7 @@
 #define __ assem->
   __ Comment("Deopt stub for id %"Pd"", deopt_id());
   __ Bind(entry_label());
+  if (FLAG_trap_on_deoptimization) __ int3();
 
   ASSERT(deoptimization_env() != NULL);