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lra-assigns.c (assign_by_spills): Add non-reload pseudos assigned to hard register to changed_pseudo_bitmap.

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2012-10-25  Vladimir Makarov  <vmakarov@redhat.com>

	* lra-assigns.c (assign_by_spills): Add non-reload pseudos
	assigned to hard register to changed_pseudo_bitmap.

From-SVN: r192817
This commit is contained in:
Vladimir Makarov 2012-10-25 16:54:14 +00:00 • committed by Vladimir Makarov
parent 479f435805
commit 992ca0f069
2 changed files with 17 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2012-10-25 Vladimir Makarov <vmakarov@redhat.com>
* lra-assigns.c (assign_by_spills): Add non-reload pseudos
assigned to hard register to changed_pseudo_bitmap.
2012-10-25 Ralf Corsépius <ralf.corsepius@rtems.org>
* config.gcc (microblaze*-*-rtems*): New target.

18
gcc/lra-assigns.c
View file

@ -1159,6 +1159,7 @@ assign_by_spills (void)
bitmap_head non_reload_pseudos;
unsigned int u;
bitmap_iterator bi;
bool reload_p;
int max_regno = max_reg_num ();
for (n = 0, i = lra_constraint_new_regno_start; i < max_regno; i++)
@ -1193,12 +1194,12 @@ assign_by_spills (void)
lra_reg_info[regno].freq, regno_assign_info[regno].first,
regno_assign_info[regno_assign_info[regno].first].freq);
hard_regno = find_hard_regno_for (regno, &cost, -1);
if (hard_regno < 0
&& ! bitmap_bit_p (&non_reload_pseudos, regno))
reload_p = ! bitmap_bit_p (&non_reload_pseudos, regno);
if (hard_regno < 0 && reload_p)
hard_regno = spill_for (regno, &all_spilled_pseudos);
if (hard_regno < 0)
{
if (! bitmap_bit_p (&non_reload_pseudos, regno))
if (reload_p)
sorted_pseudos[nfails++] = regno;
}
else
@ -1207,6 +1208,11 @@ assign_by_spills (void)
pass. Indicate that it is no longer spilled. */
bitmap_clear_bit (&all_spilled_pseudos, regno);
assign_hard_regno (hard_regno, regno);
if (! reload_p)
/* As non-reload pseudo assignment is changed we
should reconsider insns referring for the
pseudo. */
bitmap_set_bit (&changed_pseudo_bitmap, regno);
}
}
if (nfails == 0)
@ -1308,9 +1314,9 @@ assign_by_spills (void)
if (hard_regno >= 0)
{
assign_hard_regno (hard_regno, regno);
/* We change allocation for non-reload pseudo on this
iteration -- mark the pseudo for invalidation of used
alternatives of insns containing the pseudo. */
/* We change allocation for non-reload pseudo on this
iteration -- mark the pseudo for invalidation of used
alternatives of insns containing the pseudo. */
bitmap_set_bit (&changed_pseudo_bitmap, regno);
}
}