https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36550
--- Comment #17 from Jeffrey A. Law <law at gcc dot gnu.org> --- Author: law Date: Fri Dec 15 22:35:51 2017 New Revision: 255731 URL: https://gcc.gnu.org/viewcvs?rev=255731&root=gcc&view=rev Log: PR tree-optimization/36550 * tree-ssa-threadupdate.c (count_stmts_and_phis_in_block): New. (mark_threaded_blocks): Rewrite code to avoid block copying when optimizing for size. Don't pessimize blocks which will be copied, but all the statements will be dead. PR tree-optimization/36550 * gcc.dg/tree-ssa/pr36550.c: New test. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/pr36550.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-threadupdate.c
