graphics/jpeg-xl: enable LTO by default
3% faster at least with -s 9 (tortoise) and 2100x2800 input.
Beware of dragons on non-amd64 e.g.,
$ cjxl -s 9 foo.png foo.jxl
J P E G \/ |
/\ |_ e n c o d e r [v0.3.2 | SIMD supported: SSE4,Scalar]
Read 2100x2800 image, 47.7 MP/s
Encoding [VarDCT, d1.000, tortoise], 8 threads.
lib/jxl/butteraugli/butteraugli.cc:99: JXL_CHECK: out->xsize() == in.ysize()
Illegal instruction