[LLVMdev] Some understanding of LLVM vs gCC vs Intel C++ Compilers

David Greene dag at cray.com
Mon Jun 15 17:30:16 PDT 2009

On Monday 15 June 2009 19:02, me22 wrote:
> 2009/6/15 David Greene <dag at cray.com>:
> > On Monday 15 June 2009 01:32, me22 wrote:
> >> [...] works for intel's architectures and is only excellent on intel
> >> chips.
> >
> > That used to be the case, but not so anymore.  Intel compilers generate
> > just fine code for AMD processors.  Since AMD doesn't produce their
> > own compilers, it's likely on par with any other vendor producing an
> > AMD compiler.
> "On par with any other vendor" doesn't count as "excellent", to me,
> but fair enough.

Intel doesn't have the internal AMD designs so it can't make use of 
proprietary knowledge as it can for Intel chips.  But then, no AMD
compiler vendor can, so they're all operating on a level playing
field.  That's all I meant.  It is faster on some codes than other
AMD compilers.  On other codes, it's slower.  This is no different
than any other compiler.


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