With the snapshot 20041121 I get an ICE bitmap_ior, at bitmap.c:704 if I use the options -O1 (or higher) and -fmove-loop-invariants Snapshot 20041121 has the same problem.
Michael Cieslinski gcc40a -c -O2 -fmove-loop-invariants -o cineonlib.o cineonlib.i -v -pipe Reading specs from /usr/local/gcc40a/lib/gcc/powerpc-unknown-linux- gnu/4.0.0/specs Configured with: ../gcc40/configure --prefix=/usr/local/gcc40a --program- suffix=40a --with-cpu=G5 --enable-altivec --enable-languages=c,c++ --enable- checking Thread model: posix gcc version 4.0.0 20041121 (experimental) /usr/local/gcc40a/libexec/gcc/powerpc-unknown-linux-gnu/4.0.0/cc1 - fpreprocessed cineonlib.i -quiet -dumpbase cineonlib.i -mcpu=G5 -auxbase-strip cineonlib.o -O2 -version -fmove-loop-invariants -o - | as -mpower4 -maltivec -many -V -Qy -o cineonlib.o - GNU C version 4.0.0 20041121 (experimental) (powerpc-unknown-linux-gnu) compiled by GNU C version 4.0.0 20041107 (experimental). GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 GNU assembler version 2.15.90 (ppc-redhat-linux) using BFD version 2.15.90 20040225 cineonlib.c: In function dumpCineonGenericHeader: cineonlib.c:282: internal compiler error: in bitmap_ior, at bitmap.c:704 Please submit a full bug report, with preprocessed source if appropriate. -- Summary: ICE: in bitmap_ior, at bitmap.c:704 with -O1 -fmove- loop-invariants Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: micis at gmx dot de CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: powerpc-unknown-linux-gnu GCC host triplet: powerpc-unknown-linux-gnu GCC target triplet: powerpc-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18611