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| author | Martin Liska <mliska@suse.cz> | 2016-06-24 18:22:44 +0200 |
|---|---|---|
| committer | Martin Liska <marxin@gcc.gnu.org> | 2016-06-24 16:22:44 +0000 |
| commit | 199b1891cb3855b293e0abf18a894645738e3132 (patch) | |
| tree | 58def27bed7c883fb39401708de460fccdea696c /gcc/cfgloop.c | |
| parent | 04619cb86e06ee543dd4ab2b3b8e7fad772883bd (diff) | |
| download | gcc-199b1891cb3855b293e0abf18a894645738e3132.zip gcc-199b1891cb3855b293e0abf18a894645738e3132.tar.gz gcc-199b1891cb3855b293e0abf18a894645738e3132.tar.bz2 | |
Dump profile-based number of iterations
* analyze_brprob.py: Parse and display average number
of loop iterations.
* cfgloop.c (flow_loop_dump): Dump average number of loop iterations.
* cfgloop.h: Change 'struct loop' to 'const struct loop' for a
few functions.
* cfgloopanal.c (expected_loop_iterations_unbounded): Set a new
argument to true if the expected number of iterations is
loop-based.
From-SVN: r237762
Diffstat (limited to 'gcc/cfgloop.c')
| -rw-r--r-- | gcc/cfgloop.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/cfgloop.c b/gcc/cfgloop.c index 5650f0d..e6174bd 100644 --- a/gcc/cfgloop.c +++ b/gcc/cfgloop.c @@ -136,6 +136,14 @@ flow_loop_dump (const struct loop *loop, FILE *file, loop_depth (loop), (long) (loop_outer (loop) ? loop_outer (loop)->num : -1)); + if (loop->latch) + { + bool read_profile_p; + gcov_type nit = expected_loop_iterations_unbounded (loop, &read_profile_p); + if (read_profile_p && !loop->any_estimate) + fprintf (file, ";; profile-based iteration count: %lu\n", nit); + } + fprintf (file, ";; nodes:"); bbs = get_loop_body (loop); for (i = 0; i < loop->num_nodes; i++) @@ -1913,7 +1921,7 @@ get_estimated_loop_iterations (struct loop *loop, widest_int *nit) false, otherwise returns true. */ bool -get_max_loop_iterations (struct loop *loop, widest_int *nit) +get_max_loop_iterations (const struct loop *loop, widest_int *nit) { if (!loop->any_upper_bound) return false; @@ -1927,7 +1935,7 @@ get_max_loop_iterations (struct loop *loop, widest_int *nit) on the number of iterations of LOOP could not be derived, returns -1. */ HOST_WIDE_INT -get_max_loop_iterations_int (struct loop *loop) +get_max_loop_iterations_int (const struct loop *loop) { widest_int nit; HOST_WIDE_INT hwi_nit; |