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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-04-25 06:45:05 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-04-25 06:45:05 +0000 |
commit | 067066fc9b2c3edf114974082a2172ca8527a4bf (patch) | |
tree | 858bc26c290ca7f50d5fe0075a3fdf6cc9d26921 /compile.c | |
parent | b768dc2207d800e1c462fc4367e89b2ae2f5a919 (diff) | |
download | ruby-067066fc9b2c3edf114974082a2172ca8527a4bf.tar.gz |
compile.c: fix unconditional branch optimization
* compile.c (iseq_peephole_optimize): add dummy `putnil` after a
`jump` replacing an unconditional branch, to adjust removed
`dup`. [ruby-core:86666] [Bug #14708]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63255 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'compile.c')
-rw-r--r-- | compile.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -2893,6 +2893,10 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal ELEM_INSERT_NEXT(&iobj->link, &pobj->link); } if (cond) { + if (prev_dup) { + pobj = new_insn_core(iseq, pobj->insn_info.line_no, BIN(putnil), 0, NULL); + ELEM_INSERT_NEXT(&iobj->link, &pobj->link); + } iobj->insn_id = BIN(jump); goto again; } |