[Bug rtl-optimization/100066] New: [11 Regression] ICE in lra_assign, at lra-assigns.c:1649

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100066

            Bug ID: 100066
           Summary: [11 Regression] ICE in lra_assign, at
                    lra-assigns.c:1649
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: x86_64-unknown-linux-gnu

gcc-11.0.1-alpha20210411 snapshot (g:ac200799acb5cd2fb9e1758f6bf5fff1978daaeb)
ICEs when compiling the following testcase w/ -O1:

int pm;

void
w3 (int, int, int);

void
e6 (__int128 rt, long int mo)
{
  mo += rt / 0;
  w3 (pm / mo, pm, 0);
}

% x86_64-unknown-linux-gnu-gcc-11.0.1 -O1 -w -c eukuvtrk.c
during RTL pass: reload
eukuvtrk.c: In function 'e6':
eukuvtrk.c:11:1: internal compiler error: in lra_assign, at lra-assigns.c:1649
   11 | }
      | ^
0xc6d9fa lra_assign(bool&)
       
/var/tmp/portage/sys-devel/gcc-11.0.1_alpha20210411/work/gcc-11-20210411/gcc/lra-assigns.c:1649
0xc67b94 lra(_IO_FILE*)
       
/var/tmp/portage/sys-devel/gcc-11.0.1_alpha20210411/work/gcc-11-20210411/gcc/lra.c:2387
0xc203c9 do_reload
       
/var/tmp/portage/sys-devel/gcc-11.0.1_alpha20210411/work/gcc-11-20210411/gcc/ira.c:5835
0xc203c9 execute
       
/var/tmp/portage/sys-devel/gcc-11.0.1_alpha20210411/work/gcc-11-20210411/gcc/ira.c:6021

It ICEs on the same assertion as in PR99829, so I suppose it's actually a
duplicate.