Fix a possible duplicate AST ID for deoptimization.

src/ia32/full-codegen-ia32.cc

Index: src/ia32/full-codegen-ia32.cc
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index ec5d2c86a423473cd7a4e4a8561da2eae930c914..cdd925d7771d376a304a39700893321482bf3d39 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -717,18 +717,25 @@ void FullCodeGenerator::EmitDeclaration(Variable* variable,
   } else if (prop != NULL) {
     if (function != NULL || mode == Variable::CONST) {
       // We are declaring a function or constant that rewrites to a
-      // property.  Use (keyed) IC to set the initial value.
-      VisitForStackValue(prop->obj());
+      // property.  Use (keyed) IC to set the initial value.  We cannot
+      // visit the rewrite because it's shared and we risk recording
+      // duplicate AST IDs for bailouts from optimized code.
+      ASSERT(prop->obj()->AsVariableProxy() != NULL);
+      { AccumulatorValueContext for_object(this);
+        EmitVariableLoad(prop->obj()->AsVariableProxy()->var());
+      }
+
       if (function != NULL) {
-        VisitForStackValue(prop->key());
+        __ push(eax);
         VisitForAccumulatorValue(function);
-        __ pop(ecx);
+        __ pop(edx);
       } else {
-        VisitForAccumulatorValue(prop->key());
-        __ mov(ecx, result_register());
-        __ mov(result_register(), Factory::the_hole_value());
+        __ mov(edx, eax);
+        __ mov(eax, Factory::the_hole_value());
       }
-      __ pop(edx);
+      ASSERT(prop->key()->AsLiteral() != NULL &&
+             prop->key()->AsLiteral()->handle()->IsSmi());
+      __ Set(ecx, Immediate(prop->key()->AsLiteral()->handle()));
 
       Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize));
       EmitCallIC(ic, RelocInfo::CODE_TARGET);