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Distributions looking at LLVM

Distributions looking at LLVM

Posted Mar 23, 2012 20:30 UTC (Fri) by scientes (guest, #83068)
Parent article: Distributions looking at LLVM

> Apple LLVM is fast. It compiles code twice as quickly as GCC, yet produces applications that also run faster.

So Apple is behind the FUD and misinformation.


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Distributions looking at LLVM

Posted Mar 23, 2012 21:37 UTC (Fri) by khim (subscriber, #9252) [Link]

Well, kinda. Apple does not lie, the problem with Apple's “facts” is tiny GPLv3-related wrinkle: they consider GPLv3 so poisonous they don't ever touch GCC 4.3+. And of course when they compare Apple's LLVM they compare it with Apple's GCC. This means all these comparisons are with five-year old version of GCC!

Of course applefans don't know (or don't care) about that fact - that's where FUD comes from.

It is conceivable that eventually Clang will win comparison with GCC even in apples-to-apples style - but this battle will not be easy or fast.

Distributions looking at LLVM

Posted Mar 23, 2012 22:06 UTC (Fri) by scientes (guest, #83068) [Link]

> this battle will not be easy or fast.
especially when they are probably running on hardware that wasn't manufactured 5 years ago, and in that case LLVM probably compiles for CPU features and architecture optimizations that the five-year-old GCC 4.2 couldn't possibly know about.

Distributions looking at LLVM

Posted Mar 26, 2012 11:10 UTC (Mon) by jwakely (guest, #60262) [Link]

Apple's GCC isn't 5 years old, it is forked from code that is 5 years old, but they've surely made changes in that time, and could have added support for newer processors.


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