insns.def: opt_regexpmatch2 is not a leaf insn

related: r66982
Sadly opt_regexpmatch2 was not a leaf insn either.
http://ci.rvm.jp/results/trunk-vm-asserts@silicon-docker/1751213

CHECK_INTERRUPT_IN_MATCH_AT is just like RUBY_VM_CHECK_INTS, and it may
call arbitrary Ruby method, for example a GC finalizer from postponed
job in this case.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67091 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/insns.def b/insns.def
index 5422bde4b2..dac2f6f276 100644
--- a/insns.def
+++ b/insns.def
@@ -1432,6 +1432,7 @@ opt_regexpmatch2
 (CALL_INFO ci, CALL_CACHE cc)
 (VALUE obj2, VALUE obj1)
 (VALUE val)
+// attr bool leaf = false; /* match_at() has rb_thread_check_ints() */
 {
     val = vm_opt_regexpmatch2(obj2, obj1);