Test 183.equake from SPEC CPU2000 gets wrong results on powerpc64-linux (-m32 or -m64) when compiled with either "-O2 -fgraphite-identity" or "-O2 -floop-parallelize-all". I'll attach an executable testcase that demonstrates the failure. Test 178.galgel fails with the same options but I haven't investigated it.
The failure starts with the merge from the Graphite branch for r150301. With options "-O2 -fgraphite-identity" the minimized testcase and the two CPU2000 tests pass with r150248, the last revision before that merge that builds on powerpc64-linux. They also pass with GCC 4.4.2 with "-O2 -fgraphite-identity". -- Summary: wrong code for -fgraphite-identify in 183.equake Product: gcc Version: 4.5.0 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: janis at gcc dot gnu dot org GCC target triplet: powerpc64-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42644