[llvm-commits] [cfe-commits] Extend Attributes to 64 bits (wrapped in a class), add one more attribute for address safety checking

[Kaelyn Uhrain]

On Thu, Jan 19, 2012 at 9:56 AM, Kostya Serebryany <kcc at google.com> wrote:

>
>
> On Thu, Jan 19, 2012 at 1:18 AM, Anton Korobeynikov <
> anton at korobeynikov.info> wrote:
>
>> Hi Kostya,
>>
>>
>> > The patches are attached, the llvm patch is also published
>> > here: http://codereview.appspot.com/5544058/
>> What is the performance impact of this?
>>
>
> Good point (I assume you mean compile-time performance, not the
> performance of compiled programs).
> I've verified that the compile-time did not change by building 403.gcc
> and 483.xalancbmk with the original and modified clang with -O1.
>

Out of curiosity did you check the compile-time performance for 64-bit
clang/llvm, 32-bit clang/llvm, or both?  I would imagine that extending
attributes to 64-bit would have negligible impact for a 64-bit compiler
binary but potentially greater impact for a 32-bit one as they would no
longer fit in a single register.

Cheers,
Kaelyn
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