Use a different map to distinguish eval contexts

src/full-codegen/ia32/full-codegen-ia32.cc

Index: src/full-codegen/ia32/full-codegen-ia32.cc
diff --git a/src/full-codegen/ia32/full-codegen-ia32.cc b/src/full-codegen/ia32/full-codegen-ia32.cc
index 5e80dd32807ad947aea50ea20423bbd2e77274e1..2586ade7df83fa7d79e87ee101c8fe0cbdafb8ed 100644
--- a/src/full-codegen/ia32/full-codegen-ia32.cc
+++ b/src/full-codegen/ia32/full-codegen-ia32.cc
@@ -190,15 +190,22 @@ void FullCodeGenerator::Generate() {
         __ push(edx);  // Preserve new target.
       }
       if (slots <= FastNewFunctionContextStub::kMaximumSlots) {
-        FastNewFunctionContextStub stub(isolate());
-        __ mov(FastNewFunctionContextDescriptor::SlotsRegister(),
-               Immediate(slots));
-        __ CallStub(&stub);
+        if (info->scope()->is_eval_scope()) {
+          FastNewEvalContextStub stub(isolate());
+          __ Set(FastNewEvalContextDescriptor::SlotsRegister(), slots);
+          __ CallStub(&stub);
+        } else {
+          FastNewFunctionContextStub stub(isolate());
+          __ Set(FastNewFunctionContextDescriptor::SlotsRegister(), slots);
+          __ CallStub(&stub);
+        }
         // Result of FastNewFunctionContextStub is always in new space.
         need_write_barrier = false;
       } else {
-        __ push(edi);
-        __ CallRuntime(Runtime::kNewFunctionContext);
+        __ Push(edi);
+        __ CallRuntime(info->scope()->is_eval_scope()
+                           ? Runtime::kNewEvalContext
+                           : Runtime::kNewFunctionContext);
       }
       if (info->scope()->new_target_var() != nullptr) {
         __ pop(edx);  // Restore new target.