Use a different map to distinguish eval contexts

src/ia32/interface-descriptors-ia32.cc

Index: src/ia32/interface-descriptors-ia32.cc
diff --git a/src/ia32/interface-descriptors-ia32.cc b/src/ia32/interface-descriptors-ia32.cc
index e6cd46d7f053031bee00357baae74fb5c048a208..87be9c0b99764d187c266c39fd48d3cd96dd2ba3 100644
--- a/src/ia32/interface-descriptors-ia32.cc
+++ b/src/ia32/interface-descriptors-ia32.cc
@@ -25,6 +25,11 @@ const Register FastNewFunctionContextDescriptor::FunctionRegister() {
 }
 const Register FastNewFunctionContextDescriptor::SlotsRegister() { return eax; }
 
+const Register FastNewEvalContextDescriptor::FunctionRegister() {
+  return edi;
+}
+const Register FastNewEvalContextDescriptor::SlotsRegister() { return eax; }
+
 const Register LoadDescriptor::ReceiverRegister() { return edx; }
 const Register LoadDescriptor::NameRegister() { return ecx; }
 const Register LoadDescriptor::SlotRegister() { return eax; }