When running trunk -r 152114 on powerpc64 with these flags (which enable the Graphite identity transformation) I get the following ICE on most of SPEC2006 benchmarks: (the following is take from 429.mcf)
/home/eres/mainline_45/build/bin/gcc -c -o pbeampp.o -DSPEC_CPU -DNDEBUG -DWANT_STDC_PROTO -m64 -O3 -mcpu=power6 -ffast-math -maltivec -fno-loop-parallelize-all -fgraphite -fno-loop-block -fno-loop-interchange -fno-loop-strip-mine -fgraphite-identity -ftree-vectorize pbeampp.c pbeampp.c: In function 'primal_bea_mpp': pbeampp.c:119:8: internal compiler error: in sese_adjust_vphi, at sese.c:405 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. specmake: *** [pbeampp.o] Error 1 -- Summary: ICE with graphite flags Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: eres at il dot ibm dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41498