[Bug target/81693] New: FAIL: gcc.dg/torture/pr25967-*.c -O* execution test on darwin

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81693

            Bug ID: 81693
           Summary: FAIL: gcc.dg/torture/pr25967-*.c   -O*  execution test
                    on darwin
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dominiq at lps dot ens.fr
                CC: iains at gcc dot gnu.org, uros at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-apple-darwin16
            Target: x86_64-apple-darwin16
             Build: x86_64-apple-darwin16

The new tests gcc.dg/torture/pr25967-(1|2).c fail on darwin

FAIL: gcc.dg/torture/pr25967-1.c   -O1  execution test
FAIL: gcc.dg/torture/pr25967-1.c   -O2  execution test
FAIL: gcc.dg/torture/pr25967-1.c   -O2 -flto  execution test
FAIL: gcc.dg/torture/pr25967-1.c   -O2 -flto -flto-partition=none  execution
test
FAIL: gcc.dg/torture/pr25967-1.c   -O3 -g  execution test
FAIL: gcc.dg/torture/pr25967-2.c   -O0  execution test
FAIL: gcc.dg/torture/pr25967-2.c   -O1  execution test
FAIL: gcc.dg/torture/pr25967-2.c   -O2  execution test
FAIL: gcc.dg/torture/pr25967-2.c   -O2 -flto  execution test
FAIL: gcc.dg/torture/pr25967-2.c   -O2 -flto -flto-partition=none  execution
test
FAIL: gcc.dg/torture/pr25967-2.c   -O3 -g  execution test
FAIL: gcc.dg/torture/pr25967-2.c   -Os  execution test

with -m32 and

FAIL: gcc.dg/torture/pr25967-1.c   -O1  execution test
FAIL: gcc.dg/torture/pr25967-1.c   -O2  execution test
FAIL: gcc.dg/torture/pr25967-1.c   -O2 -flto  execution test
FAIL: gcc.dg/torture/pr25967-1.c   -O2 -flto -flto-partition=none  execution
test
FAIL: gcc.dg/torture/pr25967-1.c   -O3 -g  execution test
FAIL: gcc.dg/torture/pr25967-1.c   -Os  execution test
FAIL: gcc.dg/torture/pr25967-2.c   -O0  execution test

with -m64.

% /opt/gcc/gcc8w/bin/gcc -mgeneral-regs-only
/opt/gcc/_clean/gcc/testsuite/gcc.dg/torture/pr25967-1.c -O1
-fno-reorder-blocks-and-partition
% ./a.out                                                                      
                                                      Segmentation fault