gcc trunk r154706 command flags: -O1 -ffast-math -floop-interchange Running on testcase gives: /mnt/svn/gcc-trunk/binary-154706-lto/bin/gcc -O1 -ffast-math -floop-interchange -c testcaseN2-min.i -o tmp.o testcaseN2-min.i: In function ‘adler32’: testcaseN2-min.i:1:5: error: definition in block 8 does not dominate use in block 3 for SSA_NAME: sum_3 in statement: sum_11 = adler_10 + sum_3; testcaseN2-min.i:1:5: internal compiler error: verify_ssa failed Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions.
r154520 seems to work without any problems May be a dup of PR42186, PR42166, PR40767 or PR40711 (or some other PR). -- Summary: [4.5 Regression] internal compiler error: verify_ssa failed with -ffast-math -floop-interchange Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: zsojka at seznam dot cz GCC host triplet: x86_64-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42205