https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70219
--- Comment #2 from Zdenek Sojka <zsojka at seznam dot cz> --- Created attachment 37951 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37951&action=edit testcase that needs only -O1 to reproduce $ gcc -O testcase.c testcase.c: In function 'foo': testcase.c:9:1: note: The ABI for passing parameters with 32-byte alignment has changed in GCC 4.6 foo(u16 u16_0, u32 u64_1, u128 u128_1, v32u16 v32u64_0, v32u128 v32u128_0, v32u16 v32u16_1, v32u32 v32u32_1, v32u64 v32u64_1, v32u128 v32u128_1) ^~~ testcase.c:9:1: warning: AVX vector argument without AVX enabled changes the ABI [-Wpsabi] testcase.c:15:1: internal compiler error: in delete_move_and_clobber, at lra-constraints.c:5864 } ^ 0xa08790 delete_move_and_clobber /repo/gcc-trunk/gcc/lra-constraints.c:5864 0xa166e8 remove_inheritance_pseudos /repo/gcc-trunk/gcc/lra-constraints.c:5943 0xa166e8 lra_undo_inheritance() /repo/gcc-trunk/gcc/lra-constraints.c:6231 0x9fe567 lra(_IO_FILE*) /repo/gcc-trunk/gcc/lra.c:2333 0x9a4c79 do_reload /repo/gcc-trunk/gcc/ira.c:5398 0x9a4c79 execute /repo/gcc-trunk/gcc/ira.c:5582 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions.