Comment 1 for bug 1616729

This appears to be a Ubuntu issue. On a Debian 8 system with Clang 3.5 installed, I get the following, which seems to indicate Debian has remediated the issue:

$ clang++ -march=native -dM -E - </dev/null | egrep -i '(sse|aes|rdrnd|rdseed|avx|bmi)'
#define __AES__ 1
#define __AVX__ 1
#define __SSE2_MATH__ 1
#define __SSE2__ 1
#define __SSE3__ 1
#define __SSE4_1__ 1
#define __SSE4_2__ 1
#define __SSE_MATH__ 1
#define __SSE__ 1
#define __SSSE3__ 1

$ clang++ -v
Debian clang version 3.5.2-2 (tags/RELEASE_352/final) (based on LLVM 3.5.2)
Target: x86_64-pc-linux-gnu
Thread model: posix

$ dpkg -l clang-3.5
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-============-============-=================================
ii clang-3.5 1:3.5.2-2 amd64 C, C++ and Objective-C compiler (