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| author | Aditya Kumar <aditya.k7@samsung.com> | 2015-10-21 21:18:17 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@gcc.gnu.org> | 2015-10-21 21:18:17 +0000 |
| commit | 8b76e7fef8246b7bb6f209b8ce0768d437b7b4a0 (patch) | |
| tree | d69a131c4e1ebc4d17844685161bbfde2a5cd128 | |
| parent | 7ec491c07be298679b27d5939accc30de01d62d0 (diff) | |
| download | gcc-8b76e7fef8246b7bb6f209b8ce0768d437b7b4a0.zip gcc-8b76e7fef8246b7bb6f209b8ce0768d437b7b4a0.tar.gz gcc-8b76e7fef8246b7bb6f209b8ce0768d437b7b4a0.tar.bz2 | |
add an upper limit on the number of array references
* graphite-scop-detection.c (build_scops): Do not handle scops with more
than PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP arrays.
* params.def (PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP): New.
Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r229150
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/graphite-scop-detection.c | 11 | ||||
| -rw-r--r-- | gcc/params.def | 7 |
3 files changed, 25 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f126819..2c5af31 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2015-10-21 Aditya Kumar <aditya.k7@samsung.com> + Sebastian Pop <s.pop@samsung.com> + + * graphite-scop-detection.c (build_scops): Do not handle scops with more + than PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP arrays. + * params.def (PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP): New. + 2015-10-21 Mikhail Maltsev <maltsevm@gmail.com> * config.in: Regenerate. diff --git a/gcc/graphite-scop-detection.c b/gcc/graphite-scop-detection.c index 3ce4ff1..08c7b3ab 100644 --- a/gcc/graphite-scop-detection.c +++ b/gcc/graphite-scop-detection.c @@ -1777,6 +1777,17 @@ build_scops (vec<scop_p> *scops) continue; } + unsigned max_arrays = PARAM_VALUE (PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP); + if (scop->drs.length () >= max_arrays) + { + DEBUG_PRINT (dp << "[scop-detection-fail] too many data references: " + << scop->drs.length () + << " is larger than --param graphite-max-arrays-per-scop=" + << max_arrays << ".\n"); + free_scop (scop); + continue; + } + build_sese_loop_nests (scop->scop_info); find_scop_parameters (scop); diff --git a/gcc/params.def b/gcc/params.def index dd07301..2df47d7 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -849,6 +849,13 @@ DEFPARAM (PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION, "maximum number of basic blocks per function to be analyzed by Graphite", 100, 0, 0) +/* Maximal number of array references in a scop. */ + +DEFPARAM (PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP, + "graphite-max-arrays-per-scop", + "maximum number of arrays per scop", + 100, 0, 0) + /* Maximal number of basic blocks in the functions analyzed by Graphite. */ DEFPARAM (PARAM_GRAPHITE_MIN_LOOPS_PER_FUNCTION, |