diff options
| author | Sebastian Pop <sebastian.pop@amd.com> | 2011-01-18 16:56:41 +0000 |
|---|---|---|
| committer | Sebastian Pop <sebastian.pop@amd.com> | 2011-01-18 16:56:41 +0000 |
| commit | be7569a039564191b0f4e4b5ab805d8e213bbb7e (patch) | |
| tree | 55d5f81b7c77d801dd903aec254ff3c4f2a937be | |
| parent | eb48f73a14adde52499cf5335beb2ff8da25077a (diff) | |
Allow several reductions in a reduction PBB.
2011-01-17 Sebastian Pop <sebastian.pop@amd.com>
* graphite-dependences.c (reduction_dr_1): Allow several reductions
in a reduction PBB.
* graphite-sese-to-poly.c (split_reduction_stmt): Do not split PBBs
that have already been marked as PBB_IS_REDUCTION.
git-svn-id: https://gcc.gnu.org/svn/gcc/branches/graphite@168955 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog.graphite | 7 | ||||
| -rw-r--r-- | gcc/graphite-dependences.c | 7 | ||||
| -rw-r--r-- | gcc/graphite-sese-to-poly.c | 4 |
3 files changed, 14 insertions, 4 deletions
diff --git a/gcc/ChangeLog.graphite b/gcc/ChangeLog.graphite index 7cf92a5024c..0167f22c346 100644 --- a/gcc/ChangeLog.graphite +++ b/gcc/ChangeLog.graphite @@ -1,5 +1,12 @@ 2011-01-17 Sebastian Pop <sebastian.pop@amd.com> + * graphite-dependences.c (reduction_dr_1): Allow several reductions + in a reduction PBB. + * graphite-sese-to-poly.c (split_reduction_stmt): Do not split PBBs + that have already been marked as PBB_IS_REDUCTION. + +2011-01-17 Sebastian Pop <sebastian.pop@amd.com> + * graphite-scop-detection.c (same_close_phi_node): New. (remove_duplicate_close_phi): New. (make_close_phi_nodes_unique): New. diff --git a/gcc/graphite-dependences.c b/gcc/graphite-dependences.c index 1820d8bda97..6129905ce15 100644 --- a/gcc/graphite-dependences.c +++ b/gcc/graphite-dependences.c @@ -571,10 +571,11 @@ reduction_dr_1 (poly_bb_p pbb1, poly_dr_p pdr1, poly_dr_p pdr2) poly_dr_p pdr; FOR_EACH_VEC_ELT (poly_dr_p, PBB_DRS (pbb1), i, pdr) - if (PDR_TYPE (pdr) == PDR_WRITE) - break; + if (PDR_TYPE (pdr) == PDR_WRITE + && same_pdr_p (pdr, pdr1) && same_pdr_p (pdr, pdr2)) + return true; - return same_pdr_p (pdr, pdr1) && same_pdr_p (pdr, pdr2); + return false; } /* Return true when the data dependence relation between the data diff --git a/gcc/graphite-sese-to-poly.c b/gcc/graphite-sese-to-poly.c index 88eee71f757..c57802507fc 100644 --- a/gcc/graphite-sese-to-poly.c +++ b/gcc/graphite-sese-to-poly.c @@ -2640,7 +2640,9 @@ split_reduction_stmt (scop_p scop, gimple stmt) /* Do not split basic blocks with no writes to memory: the reduction will be the only write to memory. */ - if (nb_data_writes_in_bb (bb) == 0) + if (nb_data_writes_in_bb (bb) == 0 + /* Or if we have already marked BB as a reduction. */ + || PBB_IS_REDUCTION (pbb_from_bb (bb))) return bb; e1 = split_pbb (scop, pbb, bb, stmt); |