diff options
author | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-11-09 04:27:27 +0000 |
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committer | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-11-09 04:27:27 +0000 |
commit | 976b6df9596a2077f09f6bed1796a02a229498d1 (patch) | |
tree | 67777277e6a6d5063aea2267f8131fdcbc46bd85 /compile.c | |
parent | 2b60e342bdc327634e9eade18bad80c854b4ea7c (diff) |
fix peephole optimization.
* compile.c (iseq_peephole_optimize): do not need to put `pop`
instruction.
* test/ruby/test_optimization.rb (test_peephole_optimization_without_trace):
This code "def foo; 1.times{|(a), &b| nil && a}; end" fails to compile
by stack underflow because of above bug (fixed by this patch).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60724 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'compile.c')
-rw-r--r-- | compile.c | 3 |
1 files changed, 0 insertions, 3 deletions
@@ -2324,13 +2324,10 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal * LABEL: * leave */ - INSN *popiobj = new_insn_core(iseq, iobj->line_no, - BIN(pop), 0, 0); /* replace */ unref_destination(iobj, 0); iobj->insn_id = BIN(leave); iobj->operand_size = 0; - INSERT_ELEM_NEXT(&iobj->link, &popiobj->link); goto again; } else if ((piobj = (INSN *)get_prev_insn(iobj)) != 0 && |