https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81744
Bug ID: 81744 Summary: ICE: verify_ssa failed, at tree-ssa.c:1186 Product: gcc Version: 8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: jamrial at gmail dot com Target Milestone: --- Created attachment 41942 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41942&action=edit Preprocessed output created with -freport-bug [jamrial@ArchVM ~]$ gcc -fno-math-errno -O3 -c ccV0zFt3.i src/libavfilter/af_compand.c: In function ‘config_output’: src/libavfilter/af_compand.c:328:12: error: definition in block 78 follows the use for SSA_NAME: _519 in statement: _126 = _519 + 4294967291; during GIMPLE pass: pcom src/libavfilter/af_compand.c:328:12: internal compiler error: verify_ssa failed 0xdb534b verify_ssa(bool, bool) /home/jamrial/gcc-svn/gcc/tree-ssa.c:1186 0xa99527 execute_function_todo /home/jamrial/gcc-svn/gcc/passes.c:1997 0xa9a442 execute_todo /home/jamrial/gcc-svn/gcc/passes.c:2044 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. [jamrial@ArchVM ~]$ gcc -fno-math-errno -fno-tree-vectorize -O3 -c ccV0zFt3.i src/libavfilter/af_compand.c: In function ‘config_output’: src/libavfilter/af_compand.c:328:12: error: definition in block 83 follows the use for SSA_NAME: _618 in statement: _611 = _618 + 4294967291; during GIMPLE pass: pcom src/libavfilter/af_compand.c:328:12: internal compiler error: verify_ssa failed 0xdb534b verify_ssa(bool, bool) /home/jamrial/gcc-svn/gcc/tree-ssa.c:1186 0xa99527 execute_function_todo /home/jamrial/gcc-svn/gcc/passes.c:1997 0xa9a442 execute_todo /home/jamrial/gcc-svn/gcc/passes.c:2044 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. Doesn't crash if i remove either -fno-math-errno or -O3. Adding -fno-tree-vectorize only changes the contents of the SSA_NAME error. This seems to be a regression introduced sometime during the past week.