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| author | Jan Hubicka <hubicka@ucw.cz> | 2016-03-30 16:30:57 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2016-03-30 14:30:57 +0000 |
| commit | ba9c755f257ad36eaa7335c48008c76c27c0b30c (patch) | |
| tree | 2c2462790bd07263fc7a94de1236e8fb1f73b78d /gcc/tree-ssa-loop-ivopts.c | |
| parent | f6d2d066c26ebf0def0bd6d4be32c1d4801039fa (diff) | |
| download | gcc-ba9c755f257ad36eaa7335c48008c76c27c0b30c.zip gcc-ba9c755f257ad36eaa7335c48008c76c27c0b30c.tar.gz gcc-ba9c755f257ad36eaa7335c48008c76c27c0b30c.tar.bz2 | |
tree-ssa-loop-niter.c (idx_infer_loop_bounds): We can't get realistic estimates here.
* tree-ssa-loop-niter.c (idx_infer_loop_bounds): We can't get realistic
estimates here.
* tree-ssa-loop-unswitch.c (tree_unswitch_single_loop): Use also
max_loop_iterations_int.
(tree_unswitch_outer_loop): Likewise.
* tree-ssa-loop-ivopts.c (avg_loop_niter): Likewise.
* tree-vect-loop.c (vect_analyze_loop_2): Likewise.
From-SVN: r234572
Diffstat (limited to 'gcc/tree-ssa-loop-ivopts.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivopts.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index 99dd4d0..29c4ba4c 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -121,7 +121,11 @@ avg_loop_niter (struct loop *loop) { HOST_WIDE_INT niter = estimated_stmt_executions_int (loop); if (niter == -1) - return AVG_LOOP_NITER (loop); + { + niter = max_stmt_executions_int (loop); + if (niter == -1 || niter > AVG_LOOP_NITER (loop)) + return AVG_LOOP_NITER (loop); + } return niter; } |