[LLVMdev] LLD: representation of a power of two value

[Nick Kledzik]

On Mar 24, 2015, at 5:09 PM, Rui Ueyama <ruiu at google.com> wrote:

> It's not a big deal, but it always annoyed me a bit when I hit it, so I'll bring it up here.
> 
> LLD represents an alignment X as log2(X) in some places and just X in other places. It's a bit confusing. Because I always think alignments in my mind in terms of 1, 2, 4, 8, ..., instead of 2^1, 2^2, 2^3, ..., I'd like to propose to always use real values.
Can you give some examples?

The DefinedAtom class has struct:
 
    struct Alignment {
        uint16_t powerOf2;
        uint16_t modulus;
    };

That use seems clear.   But, yes, if there is “int alignment” somewhere, that is ambiguous.

-Nick