https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98782
--- Comment #37 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Sandiford <rsand...@gcc.gnu.org>: https://gcc.gnu.org/g:909a4b4764c4f270f09ccb2a950c91b21ed7b33a commit r12-6412-g909a4b4764c4f270f09ccb2a950c91b21ed7b33a Author: Richard Sandiford <richard.sandif...@arm.com> Date: Mon Jan 10 14:47:07 2022 +0000 ira: Add comments and fix move_spill_restore calculation This patch adds comments to describe each use of ira_loop_border_costs. I think this highlights that move_spill_restore was using the wrong cost in one case, which came from tranposing [0] and [1] in the original (pre-ira_loop_border_costs) ira_memory_move_cost expressions. The difference would only be noticeable on targets that distinguish between load and store costs. gcc/ PR rtl-optimization/98782 * ira-color.c (color_pass): Add comments to describe the spill costs. (move_spill_restore): Likewise. Fix reversed calculation.
