[Bug tree-optimization/97356] New: [11 regression] several test case failures after r11-3748

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97356

            Bug ID: 97356
           Summary: [11 regression] several test case failures after
                    r11-3748
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

g:ffe8baa996486fa0313aa804a064a58b0b161f07, r11-3748

make -k check-gcc RUNTESTFLAGS=tree-ssa.exp=gcc.dg/tree-ssa/modref-2.c
FAIL: gcc.dg/tree-ssa/modref-2.c execution test
# of expected passes            1
# of unexpected failures        1

(gdb) run
Starting program: /home/seurer/gcc/git/build/gcc-test/./modref-2.exe 

Program received signal SIGABRT, Aborted.
0x00003fffb7cd260c in __GI_raise (sig=<optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:55
55        return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
(gdb) where
#0  0x00003fffb7cd260c in __GI_raise (sig=<optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:55
#1  0x00003fffb7cd47f8 in __GI_abort () at abort.c:90
#2  0x000000001000053c in main () at
/home/seurer/gcc/git/gcc-test/gcc/testsuite/gcc.dg/tree-ssa/modref-2.c:22



Also

FAIL: gcc.dg/lto/modref-1 c_lto_modref-1_0.o-c_lto_modref-1_1.o execute -O2
-flto-partition=max -flto



commit ffe8baa996486fa0313aa804a064a58b0b161f07
Author: Jan Hubicka <jh@suse.cz>
Date:   Fri Oct 9 11:29:58 2020 +0200

    IPA modref: fix miscompilation in clone when IPA modref is used

    gcc/ChangeLog:

        PR ipa/97292
        PR ipa/97335
        * ipa-modref-tree.h (copy_from): Drop summary in a
        clone.