https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44794
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:a243ce2a52a6c62bc0d6be0b756a85dd9c1bceb7 commit r14-71-ga243ce2a52a6c62bc0d6be0b756a85dd9c1bceb7 Author: Richard Biener <rguent...@suse.de> Date: Thu Mar 9 09:02:07 2023 +0100 tree-optimization/44794 - avoid excessive RTL unrolling on epilogues The following adjusts tree_[transform_and_]unroll_loop to set an upper bound on the number of iterations on the epilogue loop it creates. For the testcase at hand which involves array prefetching this avoids applying RTL unrolling to them when -funroll-loops is specified. Other users of this API includes predictive commoning and unroll-and-jam. PR tree-optimization/44794 * tree-ssa-loop-manip.cc (tree_transform_and_unroll_loop): If an epilogue loop is required set its iteration upper bound.
