Simply directly check the magnitude of the tarval instead of converting it to a long.
* On 64 bit hosts 32 bit operations could not match immediates with bit 31 set.
  E.g. v32 & 0xFFFFFFF0.
* On 32 bit hosts 64 bit operations with 32 bit non-negative constants were erroneously matched and caused silent miscompilation.
  E.g. v64 & 0xFFFFFFF0.
* On 32 bit hosts 64 bit operations with constants, which would fit into 32 bits, but have higher bits set, were not matched, because get_tarval_long() failed.
  E.g. v64 & 0xFFFFFFFFFFFFFFF0.