http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57333
--- Comment #3 from bernhard.hartleb at gmail dot com --- (In reply to Uroš Bizjak from comment #2) > LZCNT insn is part of ABM abi, and is enabled with -mabm. Does LZCNT insn > really cause SIGILL on your target? No sorry, this was an error on my part, because I did not know about -mabm before. The compilation of (libQtGui.so.4.8.4) with -march=k8 finished only after reporting this bug and it still produced the illegal instruction. There is no problem with LZCNT, other than -mno-lzcnt not working. My issue is somewhere with LTO, since the build works percectly with LTO disabled. But this will be a different bug report.
