[PATCH] Write references to Native format in NativeReferenceIvarsV2.

[Shankar Easwaran]

I was mentioning similiar things to this for structs.

struct foo {
char c;
int x;
} __attribute__((packed));

On 11/18/2013 3:46 PM, Rui Ueyama wrote:
> On Mon, Nov 18, 2013 at 1:38 PM, Shankar Easwaran
> <shankare at codeaurora.org>wrote:
>
>> Should we use attribute packed too. I am not sure if this will raise
>> compatibility concerns across all the machines that build lld.
>>
> Which attributes are you referring to?
>
>
>> Thanks
>>
>> Shankar Easwaran
>>
>>
>> On 11/18/2013 3:05 PM, kledzik at apple.com wrote:
>>
>>>     Beside compatibility with existing files (which we don't have yet),
>>> there is another reason for V1 vs V2: size.  The NativeReferenceIvar is
>>> twice the size (8 bytes vs 4 bytes).  There will be a lot of these in
>>> files.  We should have both structs.  When a native object file is written,
>>> the Writer should see if everything is small enough that just
>>> NativeReferenceIvarsV1 structs can be used.  If not, it uses
>>> NativeReferenceIvarsV2. The Reader should always handle both.
>>>
>>> http://llvm-reviews.chandlerc.com/D2217
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>>>
>>>
>>>
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>>
>>


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