[Bug target/79240] New: [7 Regression] ICE in s390_extzv_shift_ok, at config/s390/s390.c:2475

["marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79240

            Bug ID: 79240
           Summary: [7 Regression] ICE in s390_extzv_shift_ok, at
                    config/s390/s390.c:2475
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---
            Target: s390x-suse-linux

$ cat s390x-ice.i
a, b;
c ()
{
  int d = sizeof (int) * a + 16 - a * sizeof (int) % 16;
  b = d;
}

$ ./xgcc -B. /tmp/s390x-ice.i -march=z196 -mtune=zEC12 -m64 -mzarch -O2
wngram2idngram.c: In function ‘main’:
wngram2idngram.c:465:1: internal compiler error: in s390_extzv_shift_ok, at
config/s390/s390.c:2475
0xe7b265 s390_extzv_shift_ok(int, int, unsigned long)
        ../../gcc/config/s390/s390.c:2475
0x103c414 recog_36
        ../../gcc/config/s390/s390.md:7216
0x103c414 recog_47
        ../../gcc/config/s390/vector.md:1036
0x1073935 recog_for_combine_1
        ../../gcc/combine.c:11108
0x1075b3e recog_for_combine
        ../../gcc/combine.c:11364
0x108754f try_combine
        ../../gcc/combine.c:3824
0x108abbe combine_instructions
        ../../gcc/combine.c:1429
0x108abbe rest_of_handle_combine
        ../../gcc/combine.c:14608
0x108abbe execute
        ../../gcc/combine.c:14653

As I looked at build service, GCC 6 should work fine.