Patchwork [11/28] speedup compilation

login
register
mail settings
Submitter Sebastian Pop
Date Jan. 21, 2011, 7:27 p.m.
Message ID <1295638067-13460-12-git-send-email-sebpop@gmail.com>
Download mbox | patch
Permalink /patch/79894/
State New
Headers show

Comments

Sebastian Pop - Jan. 21, 2011, 7:27 p.m.
From: spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4>

2011-01-15  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-dependences.c (build_lexicographical_constraint): Stop the
	iteration when the bag of constraints is empty.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/graphite@168837 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/ChangeLog              |    5 +++++
 gcc/ChangeLog.graphite     |    5 +++++
 gcc/graphite-dependences.c |    7 ++++++-
 3 files changed, 16 insertions(+), 1 deletions(-)

Patch

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6898f95..01dfc7e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@ 
 2011-01-21  Sebastian Pop  <sebastian.pop@amd.com>
 
+	* graphite-dependences.c (build_lexicographical_constraint): Stop the
+	iteration when the bag of constraints is empty.
+
+2011-01-21  Sebastian Pop  <sebastian.pop@amd.com>
+
 	* graphite-poly.c (pbb_remove_duplicate_pdrs): Make it work.
 
 2011-01-21  Sebastian Pop  <sebastian.pop@amd.com>
diff --git a/gcc/ChangeLog.graphite b/gcc/ChangeLog.graphite
index d961c0c..0db1c60 100644
--- a/gcc/ChangeLog.graphite
+++ b/gcc/ChangeLog.graphite
@@ -1,5 +1,10 @@ 
 2011-01-15  Sebastian Pop  <sebastian.pop@amd.com>
 
+	* graphite-dependences.c (build_lexicographical_constraint): Stop the
+	iteration when the bag of constraints is empty.
+
+2011-01-15  Sebastian Pop  <sebastian.pop@amd.com>
+
 	* graphite-poly.c (pbb_remove_duplicate_pdrs): Make it work.
 
 2011-01-15  Sebastian Pop  <sebastian.pop@amd.com>
diff --git a/gcc/graphite-dependences.c b/gcc/graphite-dependences.c
index 303f994..c9bd1be 100644
--- a/gcc/graphite-dependences.c
+++ b/gcc/graphite-dependences.c
@@ -334,7 +334,9 @@  dr_equality_constraints (graphite_dim_t dim,
 /* Builds scheduling inequality constraints: when DIRECTION is
    1 builds a GE constraint,
    0 builds an EQ constraint,
-   -1 builds a LE constraint.  */
+   -1 builds a LE constraint.
+   DIM is the dimension of the scheduling space.
+   POS and POS + OFFSET are the dimensions that are related.  */
 
 static ppl_Pointset_Powerset_C_Polyhedron_t
 build_pairwise_scheduling (graphite_dim_t dim,
@@ -417,6 +419,9 @@  build_lexicographical_constraint (ppl_Pointset_Powerset_C_Polyhedron_t bag,
       ppl_Pointset_Powerset_C_Polyhedron_intersection_assign (bag, sceq);
       ppl_delete_Pointset_Powerset_C_Polyhedron (sceq);
 
+      if (ppl_Pointset_Powerset_C_Polyhedron_is_empty (bag))
+	break;
+
       lex = build_pairwise_scheduling (dim, i + 1, offset, direction);
       ppl_Pointset_Powerset_C_Polyhedron_intersection_assign (lex, bag);