------- Comment From berg...@us.ibm.com 2024-04-10 18:42 EDT------- Doing a git bisect, it identified the following GCC commit as causing the bug:
64f3e71c302b4a13e61656ee509e7050b9bce978 is the first bad commit commit 64f3e71c302b4a13e61656ee509e7050b9bce978 Author: Jan Hubicka <j...@suse.cz> Date: Sun Nov 14 18:49:15 2021 +0100 Extend modref to track kills This patch adds kill tracking to ipa-modref. This is representd by array of accesses to memory locations that are known to be overwritten by the function. gcc/ChangeLog: 2021-11-14 Jan Hubicka <hubi...@ucw.cz> * ipa-modref-tree.c (modref_access_node::update_for_kills): New member function. (modref_access_node::merge_for_kills): Likewise. (modref_access_node::insert_kill): Likewise. * ipa-modref-tree.h (modref_access_node::update_for_kills, modref_access_node::merge_for_kills, modref_access_node::insert_kill): Declare. (modref_access_node::useful_for_kill): New member function. * ipa-modref.c (modref_summary::useful_p): Release useless kills. (lto_modref_summary): Add kills. (modref_summary::dump): Dump kills. (record_access): Add mdoref_access_node parameter. (record_access_lto): Likewise. (merge_call_side_effects): Merge kills. (analyze_call): Add ALWAYS_EXECUTED param and pass it around. (struct summary_ptrs): Add always_executed filed. (analyze_load): Update. (analyze_store): Update; record kills. (analyze_stmt): Add always_executed; record kills in clobbers. (analyze_function): Track always_executed. (modref_summaries::duplicate): Duplicate kills. (update_signature): Release kills. * ipa-modref.h (struct modref_summary): Add kills. * tree-ssa-alias.c (alias_stats): Add kill stats. (dump_alias_stats): Dump kill stats. (store_kills_ref_p): Break out from ... (stmt_kills_ref_p): Use it; handle modref info based kills. gcc/testsuite/ChangeLog: 2021-11-14 Jan Hubicka <hubi...@ucw.cz> * gcc.dg/tree-ssa/modref-dse-3.c: New test. gcc/ipa-modref-tree.c | 179 +++++++++++++++++++++++ gcc/ipa-modref-tree.h | 15 ++ gcc/ipa-modref.c | 126 +++++++++++++--- gcc/ipa-modref.h | 1 + gcc/testsuite/gcc.dg/tree-ssa/modref-dse-3.c | 22 +++ gcc/tree-ssa-alias.c | 207 +++++++++++++++++++-------- 6 files changed, 471 insertions(+), 79 deletions(-) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2033405 Title: Wrong sha256 sum on ppc64el (compiled with -O3) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/2033405/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
