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| author | Jan Hubicka <hubicka@ucw.cz> | 2016-06-10 18:00:24 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2016-06-10 16:00:24 +0000 |
| commit | 66b4d2611346c270f63a49b778bef0be28f95ccb (patch) | |
| tree | 16882eee8ded0ae2c3d85874f4bb2ea7dcbaf17c /gcc | |
| parent | 2704efe8c461992f8b2f6cacc6d0769c2a8341c3 (diff) | |
| download | gcc-66b4d2611346c270f63a49b778bef0be28f95ccb.zip gcc-66b4d2611346c270f63a49b778bef0be28f95ccb.tar.gz gcc-66b4d2611346c270f63a49b778bef0be28f95ccb.tar.bz2 | |
predict.c (predict_loops): Remove PRED_LOOP_BRANCH.
* predict.c (predict_loops): Remove PRED_LOOP_BRANCH.
* predict.def (PRED_LOOP_BRANCH): Remove.
From-SVN: r237311
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/predict.c | 12 | ||||
| -rw-r--r-- | gcc/predict.def | 6 |
3 files changed, 5 insertions, 18 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9be025e..af96025 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-06-10 Jan Hubicka <hubicka@ucw.cz> + + * predict.c (predict_loops): Remove PRED_LOOP_BRANCH. + * predict.def (PRED_LOOP_BRANCH): Remove. + 2016-06-10 David Malcolm <dmalcolm@redhat.com> * Makefile.in (OBJS): Add ggc-tests.o. diff --git a/gcc/predict.c b/gcc/predict.c index 0fa8c5b..7a33984 100644 --- a/gcc/predict.c +++ b/gcc/predict.c @@ -1805,18 +1805,6 @@ predict_loops (void) if (predicted_by_p (bb, PRED_CONTINUE)) continue; - /* Loop branch heuristics - predict an edge back to a - loop's head as taken. */ - if (bb == loop->latch) - { - e = find_edge (loop->latch, loop->header); - if (e) - { - header_found = 1; - predict_edge_def (e, PRED_LOOP_BRANCH, TAKEN); - } - } - /* Loop exit heuristics - predict an edge exiting the loop if the conditional has no loop header successors as not taken. */ if (!header_found diff --git a/gcc/predict.def b/gcc/predict.def index e1c5fae..c0a3f36 100644 --- a/gcc/predict.def +++ b/gcc/predict.def @@ -88,12 +88,6 @@ DEF_PREDICTOR (PRED_NORETURN, "noreturn call", PROB_VERY_LIKELY, DEF_PREDICTOR (PRED_COLD_FUNCTION, "cold function call", PROB_VERY_LIKELY, PRED_FLAG_FIRST_MATCH) -/* Loopback edge is taken. - FIXME: This is currently disabled because loop_optimizer_init force - loops to have simple latches. */ -DEF_PREDICTOR (PRED_LOOP_BRANCH, "loop branch", HITRATE (86), - PRED_FLAG_FIRST_MATCH) - /* Edge causing loop to terminate is probably not taken. */ DEF_PREDICTOR (PRED_LOOP_EXIT, "loop exit", HITRATE (92), PRED_FLAG_FIRST_MATCH) |