https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80181
Bug ID: 80181 Summary: [7 Regression] ICE in set_lattice_value, at tree-ssa-ccp.c:505 Product: gcc Version: unknown Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: asolokha at gmx dot com Target Milestone: --- gcc-7.0.0-alpha20170319 snapshot ICEs when compiling the following snippet w/ -O2 (-Os, -O3, -Ofast): int nr (void) { } void it (int dl) { int vp = 0; for (;;) { dl = vp ^ nr (); dl ^= vp; vp = 1; } } % gcc-7.0.0-alpha20170319 -O2 -w -c btw2qvlq.c btw2qvlq.c: In function 'it': btw2qvlq.c:17:1: internal compiler error: in set_lattice_value, at tree-ssa-ccp.c:505 } ^