2010-03-09 Sebastian Pop <sebastian.pop@amd.com>
* graphite.c (graphite_initialize): To bound the number of bbs per
function, use PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION.
* params.def (PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION): Declared.
* doc/invoke.texi: Document it.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@157433
138bc75d-0d04-0410-961f-
82ee72b054a4
2010-03-09 Sebastian Pop <sebastian.pop@amd.com>
+ * graphite.c (graphite_initialize): To bound the number of bbs per
+ function, use PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION.
+ * params.def (PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION): Declared.
+ * doc/invoke.texi: Document it.
+
+2010-03-09 Sebastian Pop <sebastian.pop@amd.com>
+
* graphite-sese-to-poly.c (build_poly_scop): Do not return bool.
* graphite-sese-to-poly.h (build_poly_scop): Same.
To avoid exponential effects in the Graphite loop transforms, the
number of parameters in a SCoP is bounded by 10.
+@item graphite-max-bbs-per-function
+To avoid exponential effects in the detection of SCoPs, the functions
+with more than 100 basic blocks are not handled by the Graphite loop
+transforms.
+
@end table
@end table
if (number_of_loops () <= 1
/* FIXME: This limit on the number of basic blocks of a function
should be removed when the SCOP detection is faster. */
- || n_basic_blocks > 100)
+ || n_basic_blocks > PARAM_VALUE (PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION))
{
if (dump_file && (dump_flags & TDF_DETAILS))
print_global_statistics (dump_file);
"maximal number of parameters in a SCoP",
10, 0, 0)
+/* Maximal number of basic blocks in the functions analyzed by Graphite. */
+
+DEFPARAM (PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION,
+ "graphite-max-bbs-per-function",
+ "maximal number of basic blocks per function to be analyzed by Graphite",
+ 100, 0, 0)
+
/* Avoid doing loop invariant motion on very large loops. */
DEFPARAM (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP,