PR rtl-optimization/17482
* postreload-gcse.c (reg_avail_info, oprs_unchanged_p,
load_killed_in_block_p): Clarify comments.
(record_last_reg_set_info): Make static inline.
(mark_call, mark_set, mark_clobber, mark_oprs_set): Remove.
(record_opr_changes): New function to replace the above.
(compute_hash_table): Clarify comments. Use record_opr_changes.
(reg_set_between_after_reload_p): Clean up.
(reg_used_between_after_reload_p): Likewise.
(eliminate_partially_redundant_load): Clarify comments.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@87794 138bc75d-0d04-0410-961f-82ee72b054a4