[Bug rtl-optimization/52170] [4.7 Regression] ICE in trunc_int_for_mode, at explow.c:57 during simplify_plus_minus

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52170

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Status|NEW                         |ASSIGNED
      Known to work|                            |4.6.3
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.7.0
            Summary|ICE in trunc_int_for_mode,  |[4.7 Regression] ICE in
                   |at explow.c:57 during       |trunc_int_for_mode, at
                   |simplify_plus_minus         |explow.c:57 during
                   |                            |simplify_plus_minus

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-02-08 
11:44:20 UTC ---
Like

Index: simplify-rtx.c
===================================================================
--- simplify-rtx.c      (revision 183997)
+++ simplify-rtx.c      (working copy)
@@ -3947,7 +3947,7 @@ simplify_plus_minus (enum rtx_code code,
              /* ~a -> (-a - 1) */
              if (n_ops != 7)
                {
-                 ops[n_ops].op = constm1_rtx;
+                 ops[n_ops].op = CONSTM1_RTX (GET_MODE (this_op));
                  ops[n_ops++].neg = this_neg;
                  ops[i].op = XEXP (this_op, 0);
                  ops[i].neg = !this_neg;

Mine.