http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168
Summary: ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassig...@gcc.gnu.org ReportedBy: zso...@seznam.cz Created attachment 22149 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22149 reduced testcase Compiler output: $ gcc -O -ftree-loop-linear pr46168.c pr46168.c: In function 'foo': pr46168.c:2:1: error: definition in block 6 does not dominate use in block 5 for SSA_NAME: i16_8 in statement: i16_28 = PHI <i16_16(7), i16_8(5)> PHI argument i16_8 for PHI node i16_28 = PHI <i16_16(7), i16_8(5)> pr46168.c:2:1: 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. Tested revisions: r165915 - crash 4.5 r165781 - crash 4.4 r165754 - crash 4.4 r149995 - crash