https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87522
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ubizjak at gmail dot com Component|lto |target --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- The problem is gnu-user.h: "--32 %{!-:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}" LTO is OK. But -msse2avx turns SSE into AVX.