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compile.c: insn before pop

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* compile.c (iseq_peephole_optimize): more eliminatable
  instructions before `pop` without side effects.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63246 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-04-23 09:52:23 +00:00
parent 87ca4f3065
commit c6ad7a6272
1 changed files with 5 additions and 0 deletions
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5
compile.c
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@ -2909,6 +2909,11 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
enum ruby_vminsn_type previ = ((INSN *)prev)->insn_id;
if (previ == BIN(putobject) || previ == BIN(putnil) ||
previ == BIN(putself) || previ == BIN(putstring) ||
previ == BIN(dup) ||
previ == BIN(getlocal) ||
previ == BIN(getblockparam) ||
previ == BIN(getblockparamproxy) ||
/* getinstancevariable may issue a warning */
previ == BIN(duparray)) {
/* just push operand or static value and pop soon, no
* side effects */