[Bug rtl-optimization/91657] New: [10 regression] many failures after r275365

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91657

            Bug ID: 91657
           Summary: [10 regression] many failures after r275365
           Product: gcc
           Version: 8.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

One example:

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0  0x3fffb7f80477 in ???
#1  0x10001100 in intrinsic_unpack
        at
/home/seurer/gcc/gcc-test2/gcc/testsuite/gfortran.fortran-torture/execute/intrinsic_unpack.f90:15
#2  0x10000b0b in main
        at
/home/seurer/gcc/gcc-test2/gcc/testsuite/gfortran.fortran-torture/execute/intrinsic_unpack.f90:21
FAIL: gfortran.fortran-torture/execute/intrinsic_unpack.f90 execution,  -O3 -g 


FAIL: gcc.c-torture/execute/builtins/mempcpy-2.c execution,  -O3 -g 
FAIL: gcc.dg/tree-prof/20050826-2.c execution,    -fprofile-use -D_PROFILE_USE
FAIL: gfortran.dg/boz_15.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/boz_15.f90   -O3 -g  execution test
FAIL: gfortran.dg/char_length_8.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/char_length_8.f90   -O3 -g  execution test
FAIL: gfortran.dg/intrinsic_unpack_1.f90   -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/intrinsic_unpack_1.f90   -O3 -g  execution test
FAIL: gfortran.dg/intrinsic_unpack_2.f90   -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/intrinsic_unpack_2.f90   -O3 -g  execution test
FAIL: gfortran.dg/intrinsic_unpack_3.f90   -O3 -g  execution test
FAIL: gfortran.dg/list_read_4.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/list_read_4.f90   -O3 -g  execution test
FAIL: gfortran.dg/lto/bind_c-4 f_lto_bind_c-4_0.o-f_lto_bind_c-4_1.o execute 
-O3 -flto 
FAIL: gfortran.dg/maxlocval_1.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/maxlocval_1.f90   -O3 -g  execution test
FAIL: gfortran.dg/mvbits_1.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/mvbits_1.f90   -O3 -g  execution test
FAIL: gfortran.dg/namelist_12.f   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/namelist_12.f   -O3 -g  execution test
FAIL: gfortran.dg/pointer_remapping_5.f08   -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/pointer_remapping_5.f08   -O3 -g  execution test
FAIL: gfortran.dg/read_legacy_comma.f90   -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/read_legacy_comma.f90   -O3 -g  execution test
FAIL: gfortran.dg/record_marker_3.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/record_marker_3.f90   -O3 -g  execution test
FAIL: gfortran.dg/reshape-alloc.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/reshape-alloc.f90   -O3 -g  execution test
FAIL: gfortran.dg/shift-alloc.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/shift-alloc.f90   -O3 -g  execution test
FAIL: gfortran.dg/unpack_mask_1.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/unpack_mask_1.f90   -O3 -g  execution test
FAIL: gfortran.dg/zero_sized_3.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/zero_sized_3.f90   -O3 -g  execution test
FAIL: gfortran.fortran-torture/execute/intrinsic_unpack.f90 execution,  -O3 -g