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Eliminate CHECK_VAR instructions for defined CVs

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This commit is contained in:
Dmitry Stogov 2019-10-10 16:07:31 +03:00
parent 2118f6a898
commit 833821ac24
1 changed files with 2 additions and 0 deletions
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2
ext/opcache/Optimizer/dce.c
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@ -241,6 +241,8 @@ static inline zend_bool may_have_side_effects(
}
}
return 0;
case ZEND_CHECK_VAR:
return (OP1_INFO() & MAY_BE_UNDEF) != 0;
default:
/* For everything we didn't handle, assume a side-effect */
return 1;