[PATCH] D22782: Added 'inline' attribute to __init to inline the basic_string's constructor

[David Blaikie via cfe-commits]

I'm still (as per another similar thread) a bit concerned this is working
around a compiler optimizer bug - I'd love to see a standalone example of
this behavior (that adding the inline keyword to an already
inline/available definition is what's causing the inlining) so we can look
at what the compiler might be doing wrong (& consider fixing that as the
root cause instead of having to change every instance of this problem) -
preferably an example without std::string/headers/etc (so, preprocessed and
reduced).

But up to you folks maintaining libc++ whether this goes in of course, just
my 2c.

On Wed, Aug 3, 2016 at 5:23 AM Aditya Kumar via cfe-commits <
cfe-commits at lists.llvm.org> wrote:

> hiraditya added a comment.
>
> In https://reviews.llvm.org/D22782#504416, @EricWF wrote:
>
> > The change itself LGTM, although we probably want to inline the
> forward/input iterator __init's as well.
> >
> > However I would like to see a small benchmark that demonstrates the
> performance change. Please try and write the benchmark using Google
> Benchmark.
> >  Some helpful links:
> >
> > - http://libcxx.llvm.org/docs/TestingLibcxx.html#building-benchmarks
> > - http://github.com/google/benchmark
>
>
> Sure,
> We'll come up with a synthetic benchmark to expose performance
> improvements.
>
> Thanks,
>
>
> https://reviews.llvm.org/D22782
>
>
>
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