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Avoid useless register allocation

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This commit is contained in:
Dmitry Stogov
2020-10-13 11:37:33 +03:00
parent 82d46e353b
commit 872787c5f7
1 changed files with 1 additions and 0 deletions
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ext/opcache/jit/zend_jit_trace.c
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@@ -2157,6 +2157,7 @@ static zend_lifetime_interval** zend_jit_trace_allocate_registers(zend_jit_trace
vars_op_array[i] = op_array;
/* We don't start intervals for variables used in Phi */
if ((ssa->vars[i].use_chain >= 0 /*|| ssa->vars[i].phi_use_chain*/)
&& !zend_ssa_is_no_val_use(ssa_opcodes[ssa->vars[i].use_chain], ssa->ops + ssa->vars[i].use_chain, i)
&& zend_jit_var_supports_reg(ssa, i)
&& zend_jit_var_may_alias(op_array, op_array_ssa, i) == NO_ALIAS) {
start[i] = 0;