[Bug 221733] SSE2 instructions emited in compiler-rt on AMD Sempron 3000+

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221733

--- Comment #7 from commit-hook at freebsd.org ---
A commit references this bug:

Author: dim
Date: Tue Aug 29 21:45:00 UTC 2017
New revision: 323001
URL: https://svnweb.freebsd.org/changeset/base/323001

Log:
  In compiler-rt, a few assembler implementations for i386 floating point
  conversion functions use SSE2 instructions, but these are not guarded by
  #ifdef __SSE2__, and there is no implementation using general purpose
  registers.  For these functions, use the generic C variants instead,
  otherwise they will cause SIGILL on older processors.

  Reported by:  bsdpr at phoe.frmug.org
  PR:           221733
  MFC after:    1 week

Changes:
  head/lib/libcompiler_rt/Makefile.inc

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