Optimized instruction for Hash#freeze

If a Hash which is empty or only using literals is frozen, we detect
this as a peephole optimization and change the instructions to be
`opt_hash_freeze`.

[Feature #20684]

Co-authored-by: Jean Boussier <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/vm.c b/vm.c
index 0f0c3c91b1..6b75a7ad5a 100644
--- a/vm.c
+++ b/vm.c
@@ -2232,7 +2232,7 @@ vm_init_redefined_flag(void)
     OP(EmptyP, EMPTY_P), (C(Array), C(String), C(Hash));
     OP(Succ, SUCC), (C(Integer), C(String));
     OP(EqTilde, MATCH), (C(Regexp), C(String));
-    OP(Freeze, FREEZE), (C(String), C(Array));
+    OP(Freeze, FREEZE), (C(String), C(Array), C(Hash));
     OP(UMinus, UMINUS), (C(String));
     OP(Max, MAX), (C(Array));
     OP(Min, MIN), (C(Array));