diff options
| author | Dominik Inführ <dominik.infuehr@theobroma-systems.com> | 2017-07-05 15:09:34 +0200 |
|---|---|---|
| committer | Christoph Muellner <christoph.muellner@theobroma-systems.com> | 2018-10-17 23:23:21 +0200 |
| commit | d201b78a412e693d2d655ac6158ee9378055a013 (patch) | |
| tree | 7c2022172a849dcfe9bab88f64682838bff13f5b | |
| parent | bae700831ec90aa7def9837147d26cb1511a4f6d (diff) | |
tree-vect-slp: Enable vectorization when -fvectorize-more is given.
GCC 6+ detects more SLP instances compared to earlier versions.
Cost analysis is done for all instances together and not all
combinations. Additional instances make vectorization unprofitable,
fix it by ignoring all but first instance when -fvectorize-more is given.
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
| -rw-r--r-- | gcc/common.opt | 4 | ||||
| -rw-r--r-- | gcc/tree-vect-slp.c | 12 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gcc/common.opt b/gcc/common.opt index 6d98927fcc65..abb50ad4fabb 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -2640,6 +2640,10 @@ flist-find-pipeline Common Report Var(list_find_pipe) Optimization Pipeline the find operation in a linked list. +fvectorize-more +Common Report Var(flag_vectorize_more) Optimization +Vectorize a bit more. + funwind-tables Common Report Var(flag_unwind_tables) Optimization Just generate unwind tables for exception handling. diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c index 66548cf6f86e..8b3492567797 100644 --- a/gcc/tree-vect-slp.c +++ b/gcc/tree-vect-slp.c @@ -2526,6 +2526,18 @@ vect_slp_analyze_operations (vec<slp_instance> slp_instances, void *data) vect_free_slp_instance (instance); slp_instances.ordered_remove (i); } + else if (flag_vectorize_more != 0 && i > 0) + { + dump_printf_loc (MSG_NOTE, vect_location, + "removing SLP instance operations starting from: "); + dump_gimple_stmt (MSG_NOTE, TDF_SLIM, + SLP_TREE_SCALAR_STMTS + (SLP_INSTANCE_TREE (instance))[0], 0); + dump_printf_loc (MSG_NOTE, vect_location, + "remove all but first instance\n"); + vect_free_slp_instance (instance); + slp_instances.ordered_remove (i); + } else { /* Compute the costs of the SLP instance. */ |