dist/gcc/lra-spills.cc

25    The pass creates necessary stack slots and assigns spilled pseudos
26    to the stack slots in following way:
29      for all stack slots S do
95 /* The stack slots for each spilled pseudo.  Indexed by regnos.	 */
123 /* Array containing info about the stack slots.	 The array element is
125 static class slot *slots;
126 /* The number of the stack slots currently existing.  */
146   x = slots[slot_num].mem;
149       x = assign_stack_local (BLKmode, slots[slot_num].size,
150 			      slots[slot_num].align);
151       slots[slot_num].mem = x;
177 /* Sort pseudos according to their slots, putting the slots in the order
180    First prefer to group slots with variable sizes together and slots
186    Next, slots with lower numbers have the highest priority and should
206   diff = (int (slots[slot_num1].size.is_constant ())
207 	  - int (slots[slot_num2].size.is_constant ()));
333   slots[slot_num].align = MAX (slots[slot_num].align, align);
334   slots[slot_num].size = upper_bound (slots[slot_num].size,
337   if (slots[slot_num].regno < 0)
340       slots[slot_num].regno = regno;
346       first = pseudo_slots[regno].first = &pseudo_slots[slots[slot_num].regno];
352   slots[slot_num].live_ranges
353     = lra_merge_live_ranges (slots[slot_num].live_ranges,
360    memory stack slots.	*/
380 	    if (slots[j].hard_regno < 0
381 		/* Although it's possible to share slots between modes
386 		    == slots[j].size.is_constant ())
388 		      (slots[j].live_ranges,
395 	  slots[j].live_ranges = NULL;
396 	  slots[j].size = 0;
397 	  slots[j].align = BITS_PER_UNIT;
398 	  slots[j].regno = slots[j].hard_regno = -1;
399 	  slots[j].mem = NULL_RTX;
482 /* Convert spilled pseudos into their stack slots or spill hard regs,
624   slots = XNEWVEC (class slot, regs_num);
642 	  print_dec (GET_MODE_SIZE (GET_MODE (slots[i].mem)),
645 	  for (curr_regno = slots[i].regno;;
656   free (slots);