[Bug tree-optimization/111950] [14 Regression] ICE in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 since r14-4786-gd118738e71c

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111950

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #56500|0                           |1
        is obsolete|                            |

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 56502
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56502&action=edit
patch

Remaining and polished patch.  Will ICE the following testcases I added:

FAIL: gfortran.dg/20231103-1.f90   -O  (internal compiler error: verify_gimple
failed)
FAIL: gfortran.dg/20231103-1.f90   -O   2 blank line(s) in output
FAIL: gfortran.dg/20231103-1.f90   -O  (test for excess errors)
FAIL: gfortran.dg/20231103-2.f90   -O  (internal compiler error: verify_gimple
failed)
FAIL: gfortran.dg/20231103-2.f90   -O   2 blank line(s) in output
FAIL: gfortran.dg/20231103-2.f90   -O  (test for excess errors)


ICE like the following, investigation pending.

Error: incompatible types in 'PHI' argument 1
real(kind=4)

integer(kind=8)

prephitmp_91 = PHI <_21(56), S.4_130(55)>
during GIMPLE pass: vect