Fix performance regression in regular expressions after Array.push() optimizations

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 83b461de20bbb7c251f19e7cdd3ee511896a40e5..addc83d0f4cac9c0ac9847b809a2d4df6593dcdf 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -1483,6 +1483,8 @@ HValue* CodeStubGraphBuilder<RegExpConstructResultStub>::BuildCodeStub() {
   HValue* index = GetParameter(RegExpConstructResultStub::kIndex);
   HValue* input = GetParameter(RegExpConstructResultStub::kInput);
 
+  info()->MarkMustNotHaveEagerFrame();
+
   return BuildRegExpConstructResult(length, index, input);
 }