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

[Rui Ueyama]

I guess I'm talking about atoms. Do we have notion of section in LLD?

On Wed, Mar 25, 2015 at 8:35 AM, Shankar Easwaran <shankare at codeaurora.org>
wrote:

> On 3/24/2015 7:51 PM, Rui Ueyama wrote:
>
>> On Tue, Mar 24, 2015 at 5:40 PM, Nick Kledzik <kledzik at apple.com> wrote:
>>
>>  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.
>>>
>>>  At least in ELF, alignment values are represented not by exponents but
>> by
>> just numbers in files, so we convert them back and force. "Alignment" is
>> used for both exponents and actual values there.
>>
> I believe you are mentioning about section alignments, that are being
> differentiated from atom alignments ?
>
> If so are you planning to change the variable name (or) use Alignment even
> there ?
>
> Shankar Easwaran
>
> --
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted
> by the Linux Foundation
>
>
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