gcc/
* gimple-ssa-strength-reduction.c: Include tree-affine.h.
(name_expansions): New static variable.
(alt_base_map): Ditto.
(get_alternative_base): New function.
(find_basis_for_candidate): For CAND_REF, optionally call
find_basis_for_base_expr with the returned value from
get_alternative_base.
(record_potential_basis): Add new parameter 'base' of type 'tree';
add an assertion of non-NULL base; use base to set node->base_expr.
(alloc_cand_and_find_basis): Update; call record_potential_basis
for CAND_REF with the returned value from get_alternative_base.
(replace_refs): Dump details on the replacing.
(execute_strength_reduction): Call pointer_map_create for
alt_base_map; call free_affine_expand_cache with &name_expansions.
gcc/testsuite/
* gcc.dg/tree-ssa/slsr-39.c: Update.
* gcc.dg/tree-ssa/slsr-41.c: New test.
From-SVN: r205655
