-march= x86-64
-march= ivybridge
-mavx [disabled]
-mavx [enabled]
-mcx16 [disabled]
-mcx16 [enabled]
-mf16c [disabled]
-mf16c [enabled]
-mfsgsbase [disabled]
-mfsgsbase [enabled]
-mno-sse4 [enabled]
-mno-sse4 [disabled]
-mpclmul [disabled]
-mpclmul [enabled]
-mpopcnt [disabled]
-mpopcnt [enabled]
-mrdrnd [disabled]
-mrdrnd [enabled]
-msahf [disabled]
-msahf [enabled]
-msse3 [disabled]
-msse3 [enabled]
-msse4 [disabled]
-msse4 [enabled]
-msse4.1 [disabled]
-msse4.1 [enabled]
-msse4.2 [disabled]
-msse4.2 [enabled]
-mssse3 [disabled]
-mssse3 [enabled]
-mtune= generic
-mtune= ivybridge
-mxsave [disabled]
-mxsave [enabled]
-mxsaveopt [disabled]
-mxsaveopt [enabled]