[Bug middle-end/38846] [Graphite] 70% slower using -floop* than without graphite (gas_dyn of Polyhedron)

[burnus at gcc dot gnu dot org]

------- Comment #2 from burnus at gcc dot gnu dot org  2009-01-14 18:45 -------
The culprit is -floop-block (which is already enabled by default in the
graphite branch with -O2). Using only -floop-interchange -floop-strip-mine I
get a run time inbetween (16.5s, single run). Using only -fgraphite-identity I
also get ~16.5s.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38846