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author | nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-08-17 15:48:46 +0000 |
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committer | nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-08-17 15:48:46 +0000 |
commit | 428db8240313f3af7ca3eb4359110563d108fbd3 (patch) | |
tree | 4ada63e8390a4fe59a2e8fb666bf3dddc0c40806 /compile.c | |
parent | a42b5184f3cd1af05392279382b0b581a23de267 (diff) | |
download | ruby-428db8240313f3af7ca3eb4359110563d108fbd3.tar.gz |
merge revision(s) 63255: [Backport #14708]
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/branches/ruby_2_5@64419 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'compile.c')
-rw-r--r-- | compile.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -2647,6 +2647,10 @@ 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; } |