[Bug target/87511] [9 Regression][AArch64] UBFIZ instruction with invalid immediate emitted

[wilco at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87511

Wilco <wilco at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-10-10
                 CC|                            |wilco at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Wilco <wilco at gcc dot gnu.org> ---
Confirmed. The issue is in aarch64_mask_and_shift_for_ubfiz_p:

&& (INTVAL (mask) & ((1 << INTVAL (shft_amnt)) - 1)) == 0;

This evaluates the shift as a 32-bit int rather than HOST_WIDE_INT.