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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/95694] [9/10/11 Regression] ICE in
 trunc_int_for_mode, at explow.c:59 since r9-7156-g33579b59aaf02eb7
Date: Tue, 16 Jun 2020 08:06:24 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95694

rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |rsandifo at gcc dot=
 gnu.org
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2020-06-16

--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.or=
g> ---
OK.

It looks like the mode is readily available in each call to
REDUCE_BIT_FIELD, so I think we should just pass that down.
It would also avoid:

  if (target && GET_MODE (target) !=3D GET_MODE (exp))
    target =3D 0;

creating unnecessary temporaries for constant integers.=