I see the following ICE with current trunk. I can also reproduce this problem with trunk from 2007-06-04, but not with 2007-05-15.
(sid)29918:[EMAIL PROTECTED]: ~] /usr/lib/gcc-snapshot/bin/gcc -O1 -ftree-vectorize -c gretl-describe.c gretl-describe.c: In function 'uniform_correlation_matrix': gretl-describe.c:11: internal compiler error: in vectorizable_conversion, at tree-vect-transform.c:3374 Please submit a full bug report, with preprocessed source if appropriate. -- Summary: [4.3 Regression] ICE in vectorizable_conversion, at tree-vect-transform.c:3374 Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: tbm at cyrius dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33854