[Bug target/123390] UBSAN: arm: gcc/config/arm/arm.cc:5435:48: runtime error: signed integer overflow: -2147483648 - 1 cannot be represented in type 'int'

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123390

--- Comment #4 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> The fix is obvious replace 1 with 1u.


Well not quite that obvious.  remainder is an unsigned HWI, so replace it with
HOST_WIDE_INT_1U; but there's probably more cases in that function that need
checking as we use literals in several places without appropriate adornment.