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Speed-up loop blocking: strip-mining is always legal.

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2010-08-23  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-blocking.c (scop_do_strip_mine): Do not call
	graphite_legal_transform.
	(scop_do_block): Same.

From-SVN: r164793
This commit is contained in:
Sebastian Pop 2010-09-30 21:19:16 +00:00 committed by Sebastian Pop
parent 45fc26fcad
commit 3a7cd43867
3 changed files with 19 additions and 22 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2010-09-30 Sebastian Pop <sebastian.pop@amd.com>
* graphite-blocking.c (scop_do_strip_mine): Do not call
graphite_legal_transform.
(scop_do_block): Same.
2010-09-30 Vladimir Kargov <kargov@gmail.com>
* graphite-scop-detection.c (graphite_can_represent_loop): Correct the

6
gcc/ChangeLog.graphite
View File

@ -1,3 +1,9 @@
2010-08-23 Sebastian Pop <sebastian.pop@amd.com>
* graphite-blocking.c (scop_do_strip_mine): Do not call
graphite_legal_transform.
(scop_do_block): Same.
2010-08-20 Vladimir Kargov <kargov@gmail.com>
* graphite-scop-detection.c (graphite_can_represent_loop): Correct the

29
gcc/graphite-blocking.c
View File

@ -254,28 +254,13 @@ lst_do_strip_mine (lst_p lst)
return res;
}
/* Strip mines all the loops in SCOP. Nothing profitable in all this:
this is just a driver function. */
/* Strip mines all the loops in SCOP. Returns true when some loops
have been strip-mined. */
bool
scop_do_strip_mine (scop_p scop)
{
bool transform_done = false;
store_scattering (scop);
transform_done = lst_do_strip_mine (SCOP_TRANSFORMED_SCHEDULE (scop));
if (!transform_done)
return false;
if (!graphite_legal_transform (scop))
{
restore_scattering (scop);
return false;
}
return transform_done;
return lst_do_strip_mine (SCOP_TRANSFORMED_SCHEDULE (scop));
}
/* Loop blocks all the loops in SCOP. Returns true when we manage to
@ -292,10 +277,10 @@ scop_do_block (scop_p scop)
strip_mined = lst_do_strip_mine (SCOP_TRANSFORMED_SCHEDULE (scop));
interchanged = scop_do_interchange (scop);
/* If we don't interchange loops, then the strip mine is not
profitable, and the transform is not a loop blocking. */
if (!interchanged
|| !graphite_legal_transform (scop))
/* If we don't interchange loops, the strip mine alone will not be
profitable, and the transform is not a loop blocking: so revert
the transform. */
if (!interchanged)
{
restore_scattering (scop);
return false;