https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100212
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-08-17
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
shift = exact_log2 (INTVAL (XEXP (XEXP (x, 0), 1)));
if (INTVAL (XEXP (x, 1)) != (HOST_WIDE_INT)0xffffffff << shift)
shift = -1;
Simple fix is check shift to be -1 before doing the other check.
That is:
if (shift == -1
|| INTVAL (XEXP (x, 1)) != (HOST_WIDE_INT)0xffffffff << shift)
shift = -1;
Or:
if (shift != -1
&& INTVAL (XEXP (x, 1)) != (HOST_WIDE_INT)0xffffffff << shift)
shift = -1;
Both are valid as shift will be -1 before or afterwards :).
