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Fixed use-def chain unlinking for "$a = 1; $a += $a;"

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Dmitry Stogov
2017-07-14 12:39:05 +03:00
parent 7d7746814d
commit 75bd92a609
1 changed files with 3 additions and 1 deletions
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4
ext/opcache/Optimizer/sccp.c
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@@ -1367,7 +1367,9 @@ static int replace_constant_operands(sccp_ctx *ctx) {
if (opline->op2_type == IS_CONST) {
literal_dtor(&ZEND_OP2_LITERAL(opline));
} else if (ssa_op->op2_use >= 0) {
zend_ssa_unlink_use_chain(ssa, var->definition, ssa_op->op2_use);
if (ssa_op->op2_use != ssa_op->op1_use) {
zend_ssa_unlink_use_chain(ssa, var->definition, ssa_op->op2_use);
}
ssa_op->op2_use = -1;
ssa_op->op2_use_chain = -1;
}