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gcc-4.4 optimizations



I saw this on gcc devel ML:

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On Thu, 23 Apr 2009, David Ronis wrote:

> >From the info pages it seems that the new optimizations,
> -floop-interchange, -floop-strip-mine, and -floop-block, are NOT turned
> on when -O3 is specified.  Is this correct and if so, why aren't they?

Because the behavior of -O3 must not depend on whether optional libraries 
are linked into GCC, and we did not decide to make PPL and CLooG required 
to build GCC, so -O3 cannot enable any optimizations using optional 
libraries.

Joseph S. Myers
joseph codesourcery com
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Does our gcc-4.4 have these optional libs?




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