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| author | Zdenek Dvorak <dvorakz@suse.cz> | 2007-02-25 20:49:22 +0100 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2007-02-25 19:49:22 +0000 |
| commit | 4839cb59b363834b37cf3fc1f024d87eead4fd30 (patch) | |
| tree | 442c3c77bcfc1b33de609ff61cc1e7e4b84bc7e8 /gcc/cfgloop.c | |
| parent | fc8600f9c12ccb952cb38fbad4a2f34e0d958473 (diff) | |
| download | gcc-4839cb59b363834b37cf3fc1f024d87eead4fd30.zip gcc-4839cb59b363834b37cf3fc1f024d87eead4fd30.tar.gz gcc-4839cb59b363834b37cf3fc1f024d87eead4fd30.tar.bz2 | |
tree-ssa-loop-niter.c (compute_estimated_nb_iterations): Fix off-by-one error.
* tree-ssa-loop-niter.c (compute_estimated_nb_iterations): Fix
off-by-one error.
(array_at_struct_end_p): New function.
(idx_infer_loop_bounds): Use it.
(estimate_numbers_of_iterations_loop): Export.
* predict.c (predict_loops): Use estimated_loop_iterations_int.
Do not use PRED_LOOP_EXIT on exits predicted by # of iterations.
(tree_estimate_probability): Call record_loop_exits.
* tree-data-ref.c (get_number_of_iters_for_loop): Replaced by ...
(estimated_loop_iterations, estimated_loop_iterations_int,
estimated_loop_iterations_tree): New functions.
(analyze_siv_subscript_cst_affine,
compute_overlap_steps_for_affine_1_2,
analyze_subscript_affine_affine): Use estimated_loop_iterations_int.
(analyze_miv_subscript): Use estimated_loop_iterations_tree.
* predict.def (PRED_LOOP_ITERATIONS): Update comment.
(PRED_LOOP_ITERATIONS_GUESSED): New.
* cfgloop.c (record_loop_exits): Do nothing if there are no loops.
* cfgloop.h (estimate_numbers_of_iterations_loop,
estimated_loop_iterations_int): Declare.
From-SVN: r122316
Diffstat (limited to 'gcc/cfgloop.c')
| -rw-r--r-- | gcc/cfgloop.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/cfgloop.c b/gcc/cfgloop.c index 62ee79c..12ce92c 100644 --- a/gcc/cfgloop.c +++ b/gcc/cfgloop.c @@ -1038,6 +1038,9 @@ record_loop_exits (void) edge_iterator ei; edge e; + if (!current_loops) + return; + if (current_loops->state & LOOPS_HAVE_RECORDED_EXITS) return; current_loops->state |= LOOPS_HAVE_RECORDED_EXITS; |