+
+ for (o = 0; o < 3; ++o)
+ {
+ if (!instr->_ops[o]) /* no such operand */
+ continue;
+
+ value = instr->_ops[o];
+
+ /* We only care about locals */
+ /* we also calculate parameter liferanges so that locals
+ * can take up parameter slots */
+ if (value->store != store_value &&
+ value->store != store_local &&
+ value->store != store_param)
+ continue;
+
+ /* read operands */
+ if (read & (1<<o))
+ {
+ if (!vec_ir_value_find(self->living, value, NULL))
+ vec_push(self->living, value);
+ }
+ }
+ /* PHI operands are always read operands */
+ for (p = 0; p < vec_size(instr->phi); ++p)
+ {
+ value = instr->phi[p].value;
+ if (!vec_ir_value_find(self->living, value, NULL))
+ vec_push(self->living, value);
+ }
+
+ /* call params are read operands too */
+ for (p = 0; p < vec_size(instr->params); ++p)
+ {
+ value = instr->params[p];
+ if (!vec_ir_value_find(self->living, value, NULL))
+ vec_push(self->living, value);
+ }
+