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re PR rtl-optimization/60317 (find_hard_regno_for compile time hog in libvpx)

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2014-02-25  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/60317
	* params.def (PARAM_LRA_MAX_CONSIDERED_RELOAD_PSEUDOS): New.
	* params.h (LRA_MAX_CONSIDERED_RELOAD_PSEUDOS): New.
	* lra-assigns.c: Include params.h.
	(spill_for): Use LRA_MAX_CONSIDERED_RELOAD_PSEUDOS as guard for
	other reload pseudos considerations.

From-SVN: r208155
This commit is contained in:
Vladimir Makarov 2014-02-25 20:34:44 +00:00 committed by Vladimir Makarov
parent 6e6eaecc6a
commit 88def6374c
4 changed files with 27 additions and 8 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2014-02-25 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/60317
* params.def (PARAM_LRA_MAX_CONSIDERED_RELOAD_PSEUDOS): New.
* params.h (LRA_MAX_CONSIDERED_RELOAD_PSEUDOS): New.
* lra-assigns.c: Include params.h.
(spill_for): Use LRA_MAX_CONSIDERED_RELOAD_PSEUDOS as guard for
other reload pseudos considerations.
2014-02-25 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
* config/rs6000/vector.md (*vector_unordered<mode>): Change split

19
gcc/lra-assigns.c
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@ -94,6 +94,7 @@ along with GCC; see the file COPYING3. If not see
#include "df.h"
#include "ira.h"
#include "sparseset.h"
#include "params.h"
#include "lra-int.h"
/* Array containing corresponding values of function
@ -896,14 +897,16 @@ spill_for (int regno, bitmap spilled_pseudo_bitmap)
}
}
n = 0;
EXECUTE_IF_SET_IN_SPARSESET (live_range_reload_inheritance_pseudos,
reload_regno)
if ((int) reload_regno != regno
&& (ira_reg_classes_intersect_p
[rclass][regno_allocno_class_array[reload_regno]])
&& live_pseudos_reg_renumber[reload_regno] < 0
&& find_hard_regno_for (reload_regno, &cost, -1) < 0)
sorted_reload_pseudos[n++] = reload_regno;
if (sparseset_cardinality (live_range_reload_inheritance_pseudos)
<= LRA_MAX_CONSIDERED_RELOAD_PSEUDOS)
EXECUTE_IF_SET_IN_SPARSESET (live_range_reload_inheritance_pseudos,
reload_regno)
if ((int) reload_regno != regno
&& (ira_reg_classes_intersect_p
[rclass][regno_allocno_class_array[reload_regno]])
&& live_pseudos_reg_renumber[reload_regno] < 0
&& find_hard_regno_for (reload_regno, &cost, -1) < 0)
sorted_reload_pseudos[n++] = reload_regno;
EXECUTE_IF_SET_IN_BITMAP (&spill_pseudos_bitmap, 0, spill_regno, bi)
{
update_lives (spill_regno, true);

5
gcc/params.def
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@ -821,6 +821,11 @@ DEFPARAM (PARAM_IRA_LOOP_RESERVED_REGS,
"The number of registers in each class kept unused by loop invariant motion",
2, 0, 0)
DEFPARAM (PARAM_LRA_MAX_CONSIDERED_RELOAD_PSEUDOS,
"lra-max-considered-reload-pseudos",
"The max number of reload pseudos which are considered during spilling a non-reload pseudo",
500, 0, 0)
/* Switch initialization conversion will refuse to create arrays that are
bigger than this parameter times the number of switch branches. */

2
gcc/params.h
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@ -196,6 +196,8 @@ extern void init_param_values (int *params);
PARAM_VALUE (PARAM_IRA_MAX_CONFLICT_TABLE_SIZE)
#define IRA_LOOP_RESERVED_REGS \
PARAM_VALUE (PARAM_IRA_LOOP_RESERVED_REGS)
#define LRA_MAX_CONSIDERED_RELOAD_PSEUDOS \
PARAM_VALUE (PARAM_LRA_MAX_CONSIDERED_RELOAD_PSEUDOS)
#define SWITCH_CONVERSION_BRANCH_RATIO \
PARAM_VALUE (PARAM_SWITCH_CONVERSION_BRANCH_RATIO)
#define LOOP_INVARIANT_MAX_BBS_IN_LOOP \