[Bug target/57333] Wrong detection of LZCNT instruction, -mno-lzcnt has no effect

2013-05-20 Thread bernhard.hartleb at gmail dot com
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 er

[Bug target/57333] Wrong detection of LZCNT instruction, -mno-lzcnt has no effect

2013-05-19 Thread bernhard.hartleb at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57333 --- Comment #1 from bernhard.hartleb at gmail dot com --- It seems the illegal instructions is caused by the use of LTO. Without LTO everything is fine. The second point is still valid, however.

[Bug target/57333] New: Wrong detection of LZCNT instruction, -mno-lzcnt has no effect

2013-05-19 Thread bernhard.hartleb at gmail dot com
Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: bernhard.hartleb at gmail dot com Sorry for describing two issues here, but I cant say how they are related: 1st: When using -march=native, gcc tries to use the LZCNT instruction. However