[forwarded from http://bugs.debian.org/PR492505]
works with 4.2 branch, fails with 4.3 branch and trunk, succeeds with -O0 $ gcc-4.3 000.c -c -O1 000.c: In function '_ov_64_seek_lap': 000.c:33: internal compiler error: in set_lattice_value, at tree-ssa-ccp.c:487 Please submit a full bug report, with preprocessed source if appropriate. void _ov_64_seek_lap (void) { unsigned x1, x2, x3; unsigned ltmp_3978_7; unsigned ltmp_3978_7__PHI_TEMPORARY; unsigned ltmp_4011_7__PHI_TEMPORARY; unsigned ltmp_4012_7; signed ltmp_4011_7; if (x1) { if (x2) { goto llvm_cbe__ov_initset_2e_exit; } } while (1) ; llvm_cbe__ov_initset_2e_exit: if (x3) { ltmp_3978_7__PHI_TEMPORARY = 0xffffff7e; goto llvm_cbe_ov_halfrate_p_2e_exit; } ltmp_3978_7__PHI_TEMPORARY = 1; llvm_cbe_ov_halfrate_p_2e_exit: ltmp_3978_7 = ltmp_3978_7__PHI_TEMPORARY; ltmp_4011_7__PHI_TEMPORARY = 0xffffffff; ltmp_4011_7 = ltmp_4011_7__PHI_TEMPORARY; ltmp_4012_7 = ltmp_4011_7 >> ltmp_3978_7; } -- Summary: [4.3/4.4 regression] ICE in set_lattice_value, at tree- ssa-ccp.c:466 Product: gcc Version: 4.3.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: debian-gcc at lists dot debian dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38359