https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94969
Bug ID: 94969 Summary: Invalid loop distribution Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: critical Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: krebbel at gcc dot gnu.org Target Milestone: --- Created attachment 48461 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48461&action=edit Testcase The attached testcase aborts on x86 when compiled with -O3. It succeeds with -O2 or -O3 -fno-loop-distribution. The loop is distributed separating the two statements. This affects the result of the testcase. for (; c <= 1; c++) { f[b] = g; f[b].e ^= 1; }