* cse.c (struct cse_reg_info): Add hash_next member,
reorder rest of struct for better packing on 64-bit
hosts.
(cse_reg_info_tree): Kill.
(REGHASH_SHIFT, REGHASH_SIZE, REGHASH_MASK, reg_hash,
REGHASH_FN): New custom pow2 hash mechanism.
(NBUCKETS): Kill.
(HASH_SHIFT, HASH_SIZE, HASH_MASK, HASH, table): Rework to
use a pow2 hash table.
(get_cse_reg_info): Rework to use new REGHASH.
(new_basic_block): Likewise, use HASH_SIZE, and inline
free_element call.
(remove_from_table): Rework to use HASH_SIZE/HASH_MASK,
and inline free_element call.
(lookup_as_function, insert, flush_hash_table, invalidate,
remove_invalid_refs, remove_invalid_subreg_refs, rehash_using_reg,
invalidate_for_call, use_related_value, find_comparison_args,
fold_rtx, equiv_constant, cse_insn, invalidate_memory): Likewise.
(hash_cse_reg_info, cse_reg_info_equal_p, free_element,
get_element): Kill.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@30883 138bc75d-0d04-0410-961f-82ee72b054a4