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compile.c: unreachable chunk

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* compile.c (iseq_peephole_optimize): remove unreachable chunk
  which appeared by useless jump elimination.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-08-25 03:41:43 +00:00
parent ed3a575b59
commit c0baa381b5
1 changed files with 3 additions and 1 deletions
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4
compile.c
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@ -2168,6 +2168,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
*/ */
unref_destination(iobj, 0); unref_destination(iobj, 0);
REMOVE_ELEM(&iobj->link); REMOVE_ELEM(&iobj->link);
return COMPILE_OK;
} }
else if (iobj != diobj && IS_INSN_ID(diobj, jump) && else if (iobj != diobj && IS_INSN_ID(diobj, jump) &&
OPERAND_AT(iobj, 0) != OPERAND_AT(diobj, 0)) { OPERAND_AT(iobj, 0) != OPERAND_AT(diobj, 0)) {
@ -2229,6 +2230,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
? BIN(branchunless) : BIN(branchif); ? BIN(branchunless) : BIN(branchif);
replace_destination(piobj, iobj); replace_destination(piobj, iobj);
REMOVE_ELEM(&iobj->link); REMOVE_ELEM(&iobj->link);
return COMPILE_OK;
} }
else if (diobj == pdiobj) { else if (diobj == pdiobj) {
/* /*
@ -2249,7 +2251,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
REPLACE_ELEM(&piobj->link, &popiobj->link); REPLACE_ELEM(&piobj->link, &popiobj->link);
} }
} }
else if (remove_unreachable_chunk(iseq, iobj->link.next)) { if (remove_unreachable_chunk(iseq, iobj->link.next)) {
goto again; goto again;
} }
} }