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compile.c: unnecessary freezing

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* compile.c (iseq_peephole_optimize): get rid of freezing
  dynamically created string to be duplicated immediately.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62039 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-01-25 12:00:00 +00:00
parent 07decad25f
commit 845b3cfbf4
1 changed files with 16 additions and 0 deletions
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16
compile.c
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@ -2832,6 +2832,22 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
}
}
if (IS_INSN_ID(iobj, freezestring) &&
IS_NEXT_INSN_ID(&iobj->link, send)) {
INSN *niobj = (INSN *)iobj->link.next;
struct rb_call_info *ci = (struct rb_call_info *)OPERAND_AT(niobj, 0);
/*
* freezestring debug_info
* send <:+@, 0, ARG_SIMPLE>
* =>
* send <:+@, 0, ARG_SIMPLE>
*/
if ((ci->flag & VM_CALL_ARGS_SIMPLE) && ci->orig_argc == 0) {
ELEM_REMOVE(list);
return COMPILE_OK;
}
}
if (do_tailcallopt &&
(IS_INSN_ID(iobj, send) ||
IS_INSN_ID(iobj, opt_aref_with) ||