The function `getTypeSizeInBits()` was wrongly used in many places when
reasoning about memory allocation, memory accesses, and memory offsets,
The result was often divided by 8 (possibly losing spare bits) or even
multiplied by 8, which makes no sense.
These uses were error prone, even if they didn't cause problems yet.
The `getTypeAllocSize()` is better suited for these uses, because it
returns the number of bytes necessary to allocate an object of the given
Type.