+ /* This is overwhelmingly the most common case: */
+ if (!LIKELY(SvTYPE(sv) == SVt_PVGV && (cv = GvCVu((const GV *)sv)))) {
+ switch (SvTYPE(sv)) {
+ case SVt_PVGV:
+ we_have_a_glob:
+ if (!(cv = GvCVu((const GV *)sv))) {
+ HV *stash;
+ cv = sv_2cv(sv, &stash, &gv, 0);
+ }
+ if (!cv) {
+ ENTER;
+ SAVETMPS;
+ goto try_autoload;
+ }
+ break;
+ case SVt_PVLV:
+ if(isGV_with_GP(sv)) goto we_have_a_glob;
+ /* FALLTHROUGH */
+ default:
+ if (sv == &PL_sv_yes) { /* unfound import, ignore */
+ if (hasargs)
+ SP = PL_stack_base + POPMARK;
+ else
+ (void)POPMARK;
+ RETURN;
+ }
+ SvGETMAGIC(sv);
+ if (SvROK(sv)) {
+ if (SvAMAGIC(sv)) {
+ sv = amagic_deref_call(sv, to_cv_amg);
+ /* Don't SPAGAIN here. */
+ }
+ }
+ else {
+ const char *sym;
+ STRLEN len;
+ if (!SvOK(sv))
+ DIE(aTHX_ PL_no_usym, "a subroutine");
+ sym = SvPV_nomg_const(sv, len);
+ if (PL_op->op_private & HINT_STRICT_REFS)
+ DIE(aTHX_ "Can't use string (\"%" SVf32 "\"%s) as a subroutine ref while \"strict refs\" in use", sv, len>32 ? "..." : "");
+ cv = get_cvn_flags(sym, len, GV_ADD|SvUTF8(sv));
+ break;
+ }
+ cv = MUTABLE_CV(SvRV(sv));
+ if (SvTYPE(cv) == SVt_PVCV)
+ break;
+ /* FALLTHROUGH */
+ case SVt_PVHV:
+ case SVt_PVAV:
+ DIE(aTHX_ "Not a CODE reference");
+ /* This is the second most common case: */
+ case SVt_PVCV:
+ cv = MUTABLE_CV(sv);
+ break;
+ }