Gentoo's Bugzilla –
Attachment 555552 Details for
Bug 671412www-client/chromium-70.0.3538.67 - ../../media/base/vector_math.cc:98:20: error: always_inline function '_mm_set_ps1' requires target feature 'mmx', but would be inlined into function 'FMUL_SSE' that is compiled without support for 'mmx'