If I build gamess and zeusmp with my normal spec optimization options, I get an internal compiler error in the change_address_1 function in emit-rtl.c, due to an address needing fixup has been generated after register allocation has been done. I have narrowed the options down to -m32 -mcpu=power4 -O2 -funroll-loops that causes the problem. I was able to build all of spec with the normal options on March 3rd.
foo.f: In function gcidav: foo.f:670:0: internal compiler error: in change_address_1, at emit-rtl.c:1912 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. -- Summary: GCC 4.5 does not build gamess, zeusmp on powerpc -m32 with loop unrolling Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: major Priority: P3 Component: rtl-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: meissner at gcc dot gnu dot org GCC build triplet: powerpc64-unknown-linux-gnu GCC host triplet: powerpc64-unknown-linux-gnu GCC target triplet: powerpc64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43484