I am at a point where I want to store additional information from
analysis (from loads and stores) to re-use them at transform stage
without repeating the analysis. I do not want to add to
stmt_vec_info at this point, so this starts adding kind specific
sub-structures by moving the STMT_VINFO_TYPE field to the SLP
tree and adding a (dummy for now) union tagged by it to receive
such data.
The change is largely mechanical after RISC-V has been prepared
to have a SLP node around.
I have settled for a union (supposed to get pointers to data).
As followup this enables getting rid of SLP_TREE_CODE and making
VEC_PERM therein a separate type, unifying its handling.
* tree-vectorizer.h (_slp_tree::type): Add.
(_slp_tree::u): Likewise.
(_stmt_vec_info::type): Remove.
(STMT_VINFO_TYPE): Likewise.
(SLP_TREE_TYPE): New.
* tree-vectorizer.cc (vec_info::new_stmt_vec_info): Do not
initialize type.
* tree-vect-slp.cc (_slp_tree::_slp_tree): Initialize type.
(vect_slp_analyze_node_operations): Adjust.
(vect_schedule_slp_node): Likewise.
* tree-vect-patterns.cc (vect_init_pattern_stmt): Do not
copy STMT_VINFO_TYPE.
* tree-vect-loop.cc: Set SLP_TREE_TYPE instead of
STMT_VINFO_TYPE everywhere.
(vect_create_loop_vinfo): Do not set STMT_VINFO_TYPE on
loop conditions.
* tree-vect-stmts.cc: Set SLP_TREE_TYPE instead of
STMT_VINFO_TYPE everywhere.
(vect_analyze_stmt): Adjust.
(vect_transform_stmt): Likewise.
* config/aarch64/aarch64.cc (aarch64_vector_costs::count_ops):
Access SLP_TREE_TYPE instead of STMT_VINFO_TYPE.
* config/i386/i386.cc (ix86_vector_costs::add_stmt_cost):
Remove non-SLP element-wise load/store matching.
* config/rs6000/rs6000.cc
(rs6000_cost_data::update_target_cost_per_stmt): Pass in
the SLP node. Use that to get at the memory access
kind and type.
(rs6000_cost_data::add_stmt_cost): Pass down SLP node.
* config/riscv/riscv-vector-costs.cc (variable_vectorized_p):
Use SLP_TREE_TYPE.
(costs::need_additional_vector_vars_p): Likewise.
(costs::update_local_live_ranges): Likewise.