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Re: graphite legacy-cloog/cloog-ppl benchmarks

From: Jack Howarth <howarth at bromo dot med dot uc dot edu>
To: gcc at gcc dot gnu dot org
Date: Fri, 12 Nov 2010 22:29:07 -0500
Subject: Re: graphite legacy-cloog/cloog-ppl benchmarks

  A quick check with...

gfortran -ffast-math -funroll-loops -msse3 -O3 -fgraphite-identity -ftree-vectorizer-verbose=2 air.f90 -o air >& air_cloog_legacy.txt
grep "LOOP VECTORIZED" air_cloog_legacy.txt | wc -l
       5

gfortran -ffast-math -funroll-loops -msse3 -O3 -fgraphite-identity -ftree-vectorizer-verbose=2 air.f90 -o air >& air_cloog_isl.txt
grep "LOOP VECTORIZED" air_cloog_isl.txt | wc -l
       5

...for each build suggests that the 12% runtime performance penalty when using cloog-isl isn't due to missed vectorizations.
         Jack

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