Handle integer-extending for C ABI
We need to supply sext/zext attributes to LLVM to ensure that arguments
are extended to the appropriate width in the correct way.
Most platforms extend integers less than 32 bits, though not all.
We need to supply sext/zext attributes to LLVM to ensure that arguments
are extended to the appropriate width in the correct way.
Most platforms extend integers less than 32 bits, though not all.