}
if (min_cost != INT_MAX)
ALLOCNO_COVER_CLASS_COST (a) = min_cost;
+
+ /* Some targets allow pseudos to be allocated to unaligned
+ sequences of hard registers. However, selecting an unaligned
+ sequence can unnecessarily restrict later allocations. So
+ increase the cost of unaligned hard regs to encourage the use
+ of aligned hard regs. */
+ {
+ int nregs, index;
+
+ if ((nregs = ira_reg_class_nregs[cover_class][ALLOCNO_MODE (a)]) > 1)
+ {
+ ira_allocate_and_set_costs
+ (&ALLOCNO_HARD_REG_COSTS (a), cover_class,
+ ALLOCNO_COVER_CLASS_COST (a));
+ reg_costs = ALLOCNO_HARD_REG_COSTS (a);
+ for (j = n - 1; j >= 0; j--)
+ {
+ if (j % nregs != 0)
+ {
+ regno = ira_non_ordered_class_hard_regs[cover_class][j];
+ index = ira_class_hard_reg_index[cover_class][regno];
+ ira_assert (index != -1);
+ reg_costs[index] += ALLOCNO_FREQ (a);
+ }
+ }
+ }
+ }
}
}