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compile.c: fix peephole optimization

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* compile.c (iseq_peephole_optimize): should `pop` before jump
  instruction which succeeds to `newarray` of a literal object,
  not after.  [ruby-core:89536] [Bug #15245]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65350 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-10-24 10:38:39 +00:00
parent cd0181dd68
commit 71b0d20f7e
2 changed files with 7 additions and 1 deletions
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2
compile.c
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@ -2913,7 +2913,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
}
else if (!iseq_pop_newarray(iseq, pobj)) {
pobj = new_insn_core(iseq, pobj->insn_info.line_no, BIN(pop), 0, NULL);
ELEM_INSERT_NEXT(&iobj->link, &pobj->link);
ELEM_INSERT_PREV(&iobj->link, &pobj->link);
}
if (cond) {
if (prev_dup) {

6
test/ruby/test_optimization.rb
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@ -794,4 +794,10 @@ class TestRubyOptimization < Test::Unit::TestCase
end
assert_equal(:ok, x.bug(:ok))
end
def test_peephole_jump_after_newarray
i = 0
%w(1) || 2 while (i += 1) < 100
assert_equal(100, i)
end
end