Re: optimizing

Hans Aberg <>
Sat, 13 Aug 2011 18:12:38 +0200

          From comp.compilers

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From: Hans Aberg <>
Newsgroups: comp.compilers
Date: Sat, 13 Aug 2011 18:12:38 +0200
Organization: A noiseless patient Spider
References: 11-08-015
Keywords: optimize
Posted-Date: 14 Aug 2011 20:28:23 EDT

On 2011/08/12 06:05, John Levine wrote:

> On 2011/08/12 06:05, glen herrmannsfeldt wrote:
>> ... Someone was wondering if any
>> optimization was done at link time.

> [This is pretty standard in the toolchains for embedded processors. I
> gather that the ARM compilers generate intermediate code, and all the
> optimization and code generation happens in the linker. -John]

I think that part of the reason that Apple switched to an LLVM based
compiler is that it can generate intermediate code that can be optimized
depending on what GPU is present. Perhaps it makes a switch from Intel
to ARM simpler.


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