diff options
| author | Richard Guenther <rguenther@suse.de> | 2012-04-12 10:13:22 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-04-12 10:13:22 +0000 |
| commit | e5b332cdb894baa96b7dc83b69140b3106fd5153 (patch) | |
| tree | 7b63486da345af5d818d56d9b0f89f9a48cbf9d0 /gcc/tree-ssa-loop-prefetch.c | |
| parent | 652c4c71a1b1f0c92b6a06305d82c354b72e16e0 (diff) | |
| download | gcc-e5b332cdb894baa96b7dc83b69140b3106fd5153.zip gcc-e5b332cdb894baa96b7dc83b69140b3106fd5153.tar.gz gcc-e5b332cdb894baa96b7dc83b69140b3106fd5153.tar.bz2 | |
tree-parloops.c (parallelize_loops): Also consult the upper bound for the number of iterations.
2012-04-12 Richard Guenther <rguenther@suse.de>
* tree-parloops.c (parallelize_loops): Also consult the upper
bound for the number of iterations.
* tree-ssa-loop-prefetch.c (determine_loop_nest_reuse): Likewise.
(loop_prefetch_arrays): Likewise.
From-SVN: r186373
Diffstat (limited to 'gcc/tree-ssa-loop-prefetch.c')
| -rw-r--r-- | gcc/tree-ssa-loop-prefetch.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree-ssa-loop-prefetch.c b/gcc/tree-ssa-loop-prefetch.c index eab1fff..19a6a22 100644 --- a/gcc/tree-ssa-loop-prefetch.c +++ b/gcc/tree-ssa-loop-prefetch.c @@ -1549,7 +1549,7 @@ determine_loop_nest_reuse (struct loop *loop, struct mem_ref_group *refs, aloop = VEC_index (loop_p, vloops, i); vol = estimated_stmt_executions_int (aloop); - if (vol < 0) + if (vol == -1) vol = expected_loop_iterations (aloop); volume *= vol; } @@ -1801,6 +1801,8 @@ loop_prefetch_arrays (struct loop *loop) ahead = (PREFETCH_LATENCY + time - 1) / time; est_niter = estimated_stmt_executions_int (loop); + if (est_niter == -1) + est_niter = max_stmt_executions_int (loop); /* Prefetching is not likely to be profitable if the trip count to ahead ratio is too small. */ |