zturner accepted this revision.
zturner added a comment.

I will ping them for some numbers and more details of their test setup.  
Regardless, I didn't mean to derail the code review.  But, I really really want 
to reach a point where we can stop falling back on the "we need to be safe even 
in the presence of stuff that is clearly not user input" argument.  I 
understand the concerns, but I don't think this is a reasonable path forward 
for the project.  If it's not user input, if we own it, then we can make 
whatever assumption we want that leads to the best performance and memory usage 
characteristics.

As I said this is a pretty uninteresting case, and probably makes no difference 
since we're talking about 30-40 strings in the whole program, so I'll leave it 
at that.  But I will probably push on this harder in the future if it's in some 
other area of code that has a larger impact.


https://reviews.llvm.org/D31172



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