#$FreeBSD: head/lib/libthr/arch/amd64/Makefile.inc 286317 2015-08-05 12:53:55Z vangyzen $ SRCS+= _umtx_op_err.S # With the current compiler and libthr code, using SSE in libthr # does not provide enough performance improvement to outweigh # the extra context switch cost. This can measurably impact # performance when the application also does not use enough SSE. CFLAGS+=${CFLAGS_NO_SIMD}