[Bug target/101505] New: [10/11/12 Regression] ICE: verify_gimple failed (error: incompatible types in 'PHI' argument 0)

["asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101505

            Bug ID: 101505
           Summary: [10/11/12 Regression] ICE: verify_gimple failed
                    (error: incompatible types in 'PHI' argument 0)
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: aarch64-linux-gnu

gcc-12.0.0-alpha20210718 snapshot (g:6ae8aac19cdbdbd96d90f86e4d8505fe121bdf06)
ICEs when compiling the following testcase w/ -O1:

int n2;

__attribute__ ((simd)) char
w7 (void)
{
  short int xb = n2;
  int qp;

  for (qp = 0; qp < 2; ++qp)
    xb = xb < 1;

  return xb;
}

% aarch64-linux-gnu-gcc-12.0.0 -O1 -c zo3xlee1.c
zo3xlee1.c: In function 'w7.simdclone.0':
zo3xlee1.c:4:1: error: incompatible types in 'PHI' argument 0
    4 | w7 (void)
      | ^~
vector(8) unsigned char

vector(8) <signed-boolean:16>

vect__18.21_29 = PHI <mask__4.19_25(4)>
during GIMPLE pass: vect
zo3xlee1.c:4:1: internal compiler error: verify_gimple failed
0xf62af7 verify_gimple_in_cfg(function*, bool)
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/tree-cfg.c:5536
0xe291ce execute_function_todo
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/passes.c:2042
0xe298d1 do_per_function
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/passes.c:1687
0xe298d1 execute_todo
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/passes.c:2096