re PR tree-optimization/58028 (Several failures in libgomp.graphite after revision 200946)

2014-03-03  Tobias Grosser  <tobias@grosser.es>
	Mircea Namolaru  <mircea.namolaru@inria.fr>

	PR tree-optimization/58028
	* graphite-clast-to-gimple.c (set_cloog_options): Don't remove
	scalar dimensions.

Co-Authored-By: Mircea Namolaru <mircea.namolaru@inria.fr>

From-SVN: r208273

gcc/ChangeLog

+2014-03-03  Tobias Grosser  <tobias@grosser.es>
+	Mircea Namolaru  <mircea.namolaru@inria.fr>
+
+	PR tree-optimization/58028
+	* graphite-clast-to-gimple.c (set_cloog_options): Don't remove
+	scalar dimensions.
+
 2014-03-03  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
 
 	* config/arm/neon.md (*movmisalign<mode>): Legitimize addresses

gcc/graphite-clast-to-gimple.c

@@ -1522,6 +1522,13 @@ set_cloog_options (void)
      variables.  */
   options->save_domains = 1;
 
+  /* Do not remove scalar dimensions.  CLooG by default removes scalar 
+     dimensions very early from the input schedule.  However, they are 
+     necessary to correctly derive from the saved domains 
+     (options->save_domains) the relationship between the generated loops 
+     and the schedule dimensions they are generated from.  */ 
+  options->noscalars = 1;
+
   /* Disable optimizations and make cloog generate source code closer to the
      input.  This is useful for debugging,  but later we want the optimized
      code.