procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

re PR rtl-optimization/58438 (ICE: in check_rtl, at lra.c:2036)

Browse source 
2013-09-18  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/58438
	* lra.c (lra): Clear lra_optional_reload_pseudos in upper loop.
	* lra-constraints.c (undo_optional_reloads): Keep optional reloads
	from previous subpasses.

2013-09-18  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/58438
	* g++.dg/pr58438.C: New test.

From-SVN: r202714
This commit is contained in:
Vladimir Makarov 2013-09-18 18:24:49 +00:00 • committed by Vladimir Makarov
parent 83ba23b7aa
commit 080cbf9ecb
4 changed files with 21 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2013-09-18 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/58438
* lra.c (lra): Clear lra_optional_reload_pseudos in upper loop.
* lra-constraints.c (undo_optional_reloads): Keep optional reloads
from previous subpasses.
2013-09-18 Richard Earnshaw <rearnsha@arm.com>
* arm.c (arm_get_frame_offsets): Validate architecture supports

10
gcc/lra-constraints.c
View file

@ -5456,10 +5456,12 @@ undo_optional_reloads (void)
EXECUTE_IF_SET_IN_BITMAP (&lra_optional_reload_pseudos, 0, regno, bi)
{
keep_p = false;
if (reg_renumber[lra_reg_info[regno].restore_regno] >= 0)
/* If the original pseudo changed its allocation, just
removing the optional pseudo is dangerous as the original
pseudo will have longer live range. */
/* Keep optional reloads from previous subpasses. */
if (lra_reg_info[regno].restore_regno < 0
/* If the original pseudo changed its allocation, just
removing the optional pseudo is dangerous as the original
pseudo will have longer live range. */
|| reg_renumber[lra_reg_info[regno].restore_regno] >= 0)
keep_p = true;
else if (reg_renumber[regno] >= 0)
EXECUTE_IF_SET_IN_BITMAP (&lra_reg_info[regno].insn_bitmap, 0, uid, bi2)

4
gcc/lra.c
View file

@ -2315,7 +2315,6 @@ lra (FILE *f)
{
for (;;)
{
bitmap_clear (&lra_optional_reload_pseudos);
/* We should try to assign hard registers to scratches even
if there were no RTL transformations in
lra_constraints. */
@ -2367,6 +2366,9 @@ lra (FILE *f)
lra_clear_live_ranges ();
}
}
/* Don't clear optional reloads bitmap until all constraints are
satisfied as we need to differ them from regular reloads. */
bitmap_clear (&lra_optional_reload_pseudos);
bitmap_clear (&lra_subreg_reload_pseudos);
bitmap_clear (&lra_inheritance_pseudos);
bitmap_clear (&lra_split_regs);

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2013-09-18 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/58438
* g++.dg/pr58438.C: New test.
2013-09-18 Tobias Burnus <burnus@net-b.de>
PR fortran/43366