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| author | Sebastian Pop <sebastian.pop@amd.com> | 2008-10-15 16:17:45 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@gcc.gnu.org> | 2008-10-15 16:17:45 +0000 |
| commit | 575da9be0d5aea2f99b4b86ad20e10d4391aae39 (patch) | |
| tree | cb79e18f32e1dd5d9b1e0daae6ef2a74a18a0c69 /gcc/graphite.c | |
| parent | 36174c82ee3314e97e8750909f5ff61b7dccbb1b (diff) | |
| download | gcc-575da9be0d5aea2f99b4b86ad20e10d4391aae39.zip gcc-575da9be0d5aea2f99b4b86ad20e10d4391aae39.tar.gz gcc-575da9be0d5aea2f99b4b86ad20e10d4391aae39.tar.bz2 | |
re PR middle-end/37828 ([graphite] ICE in expand_scalar_variables_expr, at graphite.c:3421 with -floop-block)
2008-10-15 Sebastian Pop <sebastian.pop@amd.com>
Harsha Jagasia <harsha.jagasia@amd.com>
PR tree-optimization/37828
* testsuite/gcc.dg/graphite/pr37828.c: New.
* graphite.c (graphite_trans_loop_block): Do not loop block
single nested loops.
Co-Authored-By: Harsha Jagasia <harsha.jagasia@amd.com>
From-SVN: r141142
Diffstat (limited to 'gcc/graphite.c')
| -rw-r--r-- | gcc/graphite.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/gcc/graphite.c b/gcc/graphite.c index a615e2c..c31c305 100644 --- a/gcc/graphite.c +++ b/gcc/graphite.c @@ -4767,13 +4767,19 @@ graphite_trans_loop_block (VEC (graphite_bb_p, heap) *bbs, int loops) /* TODO: - Calculate the stride size automatically. */ int stride_size = 64; + /* It makes no sense to block a single loop. */ + for (i = 0; VEC_iterate (graphite_bb_p, bbs, i, gb); i++) + if (gbb_nb_loops (gb) < 2) + return false; + for (i = 0; VEC_iterate (graphite_bb_p, bbs, i, gb); i++) transform_done |= graphite_trans_bb_block (gb, stride_size, loops); return transform_done; } -/* Loop block all basic blocks of SCOP. */ +/* Loop block all basic blocks of SCOP. Return false when the + transform is not performed. */ static bool graphite_trans_scop_block (scop_p scop) @@ -4790,10 +4796,10 @@ graphite_trans_scop_block (scop_p scop) lambda_vector last_schedule = lambda_vector_new (max_schedule); if (VEC_length (graphite_bb_p, SCOP_BBS (scop)) == 0) - return transform_done; + return false; /* Get the data of the first bb. */ - gb = VEC_index (graphite_bb_p, SCOP_BBS (scop), 0); + gb = VEC_index (graphite_bb_p, SCOP_BBS (scop), 0); last_nb_loops = gbb_nb_loops (gb); lambda_vector_copy (GBB_STATIC_SCHEDULE (gb), last_schedule, last_nb_loops + 1); |