diff options
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 32 | ||||
| -rw-r--r-- | gcc/tree-vect-loop.c | 6 |
3 files changed, 33 insertions, 12 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f609d3f..7604ccf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2014-02-05 Richard Biener <rguenther@suse.de> + + * tree-vect-loop.c (vect_analyze_loop_2): Be more informative + when not vectorizing because of too many alias checks. + * tree-vect-data-refs.c (vect_prune_runtime_alias_test_list): + Add more verboseness, avoid duplicate MSG_MISSED_OPTIMIZATION. + 2014-02-05 Nick Clifton <nickc@redhat.com> * config/mn10300/mn10300.c (mn10300_hard_regno_mode_ok): Do not diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index d018add..fa96be9 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -2901,6 +2901,24 @@ vect_prune_runtime_alias_test_list (loop_vec_info loop_vinfo) && diff - (HOST_WIDE_INT) TREE_INT_CST_LOW (dr_a1->seg_len) < min_seg_len_b)) { + if (dump_enabled_p ()) + { + dump_printf_loc (MSG_NOTE, vect_location, + "merging ranges for "); + dump_generic_expr (MSG_NOTE, TDF_SLIM, + DR_REF (dr_a1->dr)); + dump_printf (MSG_NOTE, ", "); + dump_generic_expr (MSG_NOTE, TDF_SLIM, + DR_REF (dr_b1->dr)); + dump_printf (MSG_NOTE, " and "); + dump_generic_expr (MSG_NOTE, TDF_SLIM, + DR_REF (dr_a2->dr)); + dump_printf (MSG_NOTE, ", "); + dump_generic_expr (MSG_NOTE, TDF_SLIM, + DR_REF (dr_b2->dr)); + dump_printf (MSG_NOTE, "\n"); + } + dr_a1->seg_len = size_binop (PLUS_EXPR, dr_a2->seg_len, size_int (diff)); comp_alias_ddrs.ordered_remove (i--); @@ -2908,18 +2926,12 @@ vect_prune_runtime_alias_test_list (loop_vec_info loop_vinfo) } } + dump_printf_loc (MSG_NOTE, vect_location, + "improved number of alias checks from %d to %d\n", + may_alias_ddrs.length (), comp_alias_ddrs.length ()); if ((int) comp_alias_ddrs.length () > PARAM_VALUE (PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS)) - { - if (dump_enabled_p ()) - { - dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, - "disable versioning for alias - max number of " - "generated checks exceeded.\n"); - } - - return false; - } + return false; return true; } diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index eb7ecb6..ab4d06f 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -1723,8 +1723,10 @@ vect_analyze_loop_2 (loop_vec_info loop_vinfo) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, - "too long list of versioning for alias " - "run-time tests.\n"); + "number of versioning for alias " + "run-time tests exceeds %d " + "(--param vect-max-version-for-alias-checks)\n", + PARAM_VALUE (PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS)); return false; } |