The flag --collect_code is not available in product mode.

runtime/bin/main.cc

Index: runtime/bin/main.cc
diff --git a/runtime/bin/main.cc b/runtime/bin/main.cc
index f5adbc36d505cba3c0e591a9ba987d280ae5af19..21fde137d62be90016eece862e7baf3ff78f0e70 100644
--- a/runtime/bin/main.cc
+++ b/runtime/bin/main.cc
@@ -1862,7 +1862,9 @@ void main(int argc, char** argv) {
 
   if (gen_snapshot_kind == kAppJIT) {
     vm_options.AddArgument("--fields_may_be_reset");
+#if !defined(PRODUCT)
     vm_options.AddArgument("--collect_code=false");
+#endif
   }
   if ((gen_snapshot_kind == kAppAOT) || is_noopt) {
     vm_options.AddArgument("--precompilation");