https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111943
--- Comment #2 from CVS Commits ---
The master branch has been updated by Alexandre Oliva :
https://gcc.gnu.org/g:15404016d96dca9132b952980cda24cae33b3ee0
commit r14-5033-g15404016d96dca9132b952980cda24cae33b3ee0
Author: Alexandre Oliva
Date: Tue Oct 31 09:32:08 2023 -0300
hardcfr: support checking at abnormal edges [PR111943]
Control flow redundancy may choose abnormal edges for early checking,
but that breaks because we can't insert checks on such edges.
Introduce conditional checking on the dest block of abnormal edges,
and leave it for the optimizer to drop the conditional.
for gcc/ChangeLog
PR tree-optimization/111943
* gimple-harden-control-flow.cc: Adjust copyright year.
(rt_bb_visited): Add vfalse and vtrue data members.
Zero-initialize them in the ctor.
(rt_bb_visited::insert_exit_check_on_edge): Upon encountering
abnormal edges, insert initializers for vfalse and vtrue on
entry, and insert the check sequence guarded by a conditional
in the dest block.
for libgcc/ChangeLog
* hardcfr.c: Adjust copyright year.
for gcc/testsuite/ChangeLog
PR tree-optimization/111943
* gcc.dg/harden-cfr-pr111943.c: New.
