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| author | Richard Biener <rguenther@suse.de> | 2024-03-27 11:37:16 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2024-03-27 12:49:44 +0100 |
| commit | 0b02da5b99e89347f5f8bf875ec8318f84adff18 (patch) | |
| tree | 81a85dc03e2e1a3abb10ef3ca1e4ea20f68c082b | |
| parent | aac30f8416e992c524b86eaa40f35f30fe04b755 (diff) | |
| download | gcc-0b02da5b99e89347f5f8bf875ec8318f84adff18.zip gcc-0b02da5b99e89347f5f8bf875ec8318f84adff18.tar.gz gcc-0b02da5b99e89347f5f8bf875ec8318f84adff18.tar.bz2 | |
tree-optimization/114057 - handle BB reduction remain defs as LIVE
The following makes sure to record the scalars we add to the BB
reduction vectorization result as scalar uses for the purpose of
computing live lanes. This restores vectorization in the
bondfree.c TU of 435.gromacs.
PR tree-optimization/114057
* tree-vect-slp.cc (vect_bb_slp_mark_live_stmts): Mark
BB reduction remain defs as scalar uses.
| -rw-r--r-- | gcc/tree-vect-slp.cc | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/gcc/tree-vect-slp.cc b/gcc/tree-vect-slp.cc index 23f9593..f57684c 100644 --- a/gcc/tree-vect-slp.cc +++ b/gcc/tree-vect-slp.cc @@ -6646,8 +6646,14 @@ vect_bb_slp_mark_live_stmts (bb_vec_info bb_vinfo) auto_vec<slp_tree> worklist; for (slp_instance instance : bb_vinfo->slp_instances) - if (!visited.add (SLP_INSTANCE_TREE (instance))) - worklist.safe_push (SLP_INSTANCE_TREE (instance)); + { + if (SLP_INSTANCE_KIND (instance) == slp_inst_kind_bb_reduc) + for (tree op : SLP_INSTANCE_REMAIN_DEFS (instance)) + if (TREE_CODE (op) == SSA_NAME) + scalar_use_map.put (op, 1); + if (!visited.add (SLP_INSTANCE_TREE (instance))) + worklist.safe_push (SLP_INSTANCE_TREE (instance)); + } do { @@ -6665,7 +6671,8 @@ vect_bb_slp_mark_live_stmts (bb_vec_info bb_vinfo) if (child && !visited.add (child)) worklist.safe_push (child); } - } while (!worklist.is_empty ()); + } + while (!worklist.is_empty ()); visited.empty (); |