[Bug target/100202] aarch64: UB in insv expander

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100202

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-07-19

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, the code is:
  if (width == 0 || (pos + width) > GET_MODE_BITSIZE (<MODE>mode))
    FAIL;

  if (CONST_INT_P (value))
    {
      unsigned HOST_WIDE_INT mask = ((unsigned HOST_WIDE_INT)1 << width) - 1;


I think > should be >= .