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Remove unusded phi

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This commit is contained in:
Dmitry Stogov
2017-07-11 02:36:14 +03:00
parent d5e0f2df4c
commit 85a86e58b2
1 changed files with 7 additions and 3 deletions
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10
ext/opcache/Optimizer/sccp.c
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@@ -1280,6 +1280,9 @@ static int replace_constant_operands(sccp_ctx *ctx) {
zend_op *opline = &op_array->opcodes[use];
zend_ssa_op *ssa_op = &ssa->ops[use];
if (try_replace_op1(ctx, opline, ssa_op, i, value)) {
if (opline->opcode == ZEND_NOP) {
removed_ops++;
}
ZEND_ASSERT(ssa_op->op1_def == -1);
if (ssa_op->op1_use != ssa_op->op2_use) {
zend_ssa_unlink_use_chain(ssa, use, ssa_op->op1_use);
@@ -1392,11 +1395,12 @@ static int replace_constant_operands(sccp_ctx *ctx) {
Z_TRY_ADDREF_P(value);
}
}
/*if (var->definition_phi
if (var->definition_phi
&& value_known(&ctx->values[i])
&& var->use_chain < 0
&& ssa->phi_use_chain == NULL) {
&& var->phi_use_chain == NULL) {
zend_ssa_remove_phi(ssa, var->definition_phi);
}*/
}
}
return removed_ops;