diff options
| author | Jan Hubicka <hubicka@ucw.cz> | 2016-05-27 14:10:34 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2016-05-27 12:10:34 +0000 |
| commit | 105e29c5cf8729021614b152328bcfe054bed64d (patch) | |
| tree | 9c8ce8178d2d6e5fb92b3271a8afae4b5b62e6c0 /gcc/tree-ssa-loop-ivcanon.c | |
| parent | 3cee7e4e2badde2374fc77bb8f3a072e1698d1fe (diff) | |
cfgloop.c (record_niter_bound): Record likely upper bounds.
* cfgloop.c (record_niter_bound): Record likely upper bounds.
(likely_max_stmt_executions_int, get_likely_max_loop_iterations,
get_likely_max_loop_iterations_int): New.
* cfgloop.h (struct loop): Add nb_iterations_likely_upper_bound,
any_likely_upper_bound.
(get_likely_max_loop_iterations_int, get_likely_max_loop_iterations):
Declare.
* cfgloopmanip.c (copy_loop_info): Copy likely upper bounds.
* loop-unroll.c (unroll_loop_constant_iterations): Update likely
upper bound.
(unroll_loop_constant_iterations): Likewise.
(unroll_loop_runtime_iterations): Likewise.
* lto-streamer-in.c (input_cfg): Stream likely upper bounds.
* lto-streamer-out.c (output_cfg): Likewise.
* tree-ssa-loop-ivcanon.c (try_peel_loop): Update likely upper
bounds.
(canonicalize_loop_induction_variables): Dump likely upper bounds.
* tree-ssa-loop-niter.c (record_estimate): Record likely upper bounds.
(likely_max_loop_iterations): New.
(likely_max_loop_iterations_int): New.
(likely_max_stmt_executions): New.
* tree-ssa-loop-niter.h (likely_max_loop_iterations,
likely_max_loop_iterations_int, likely_max_stmt_executions_int,
likely_max_stmt_executions): Declare.
From-SVN: r236816
Diffstat (limited to 'gcc/tree-ssa-loop-ivcanon.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivcanon.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/tree-ssa-loop-ivcanon.c b/gcc/tree-ssa-loop-ivcanon.c index e8f67953231..de447f40e78 100644 --- a/gcc/tree-ssa-loop-ivcanon.c +++ b/gcc/tree-ssa-loop-ivcanon.c @@ -1036,6 +1036,8 @@ try_peel_loop (struct loop *loop, } if (loop->any_upper_bound) loop->nb_iterations_upper_bound -= npeel; + if (loop->any_likely_upper_bound) + loop->nb_iterations_likely_upper_bound -= npeel; loop->nb_iterations_estimate = 0; /* Make sure to mark loop cold so we do not try to peel it more. */ scale_loop_profile (loop, 1, 0); @@ -1107,6 +1109,12 @@ canonicalize_loop_induction_variables (struct loop *loop, fprintf (dump_file, "Loop %d iterates at most %i times.\n", loop->num, (int)maxiter); } + if (dump_file && (dump_flags & TDF_DETAILS) + && likely_max_loop_iterations_int (loop) >= 0) + { + fprintf (dump_file, "Loop likely %d iterates at most %i times.\n", loop->num, + (int)likely_max_loop_iterations_int (loop)); + } /* Remove exits that are known to be never taken based on loop bound. Needs to be called after compilation of max_loop_iterations_int that |