-x generate specialized code to run exclusively on processors
indicated by as described below
SSSE3 Intel Core2 processor family with Supplemental
Streaming SIMD Extensions 3 (SSSE3)
SSE4.1 Intel 45nm Hi-k next generation Intel Core
microarchitecture with support for Streaming SIMD
Extensions 4 (Intel SSE4) Vectorizing
Compiler and Media Accelerator instructions
SSE4.2 Can generate Intel SSE4 Efficient Accelerated String
and Text Processing instructions supported by Intel
Core i7 processors. Can generate Intel SSE4
Vectorizing Compiler and Media Accelerator, Intel SSSE3,
SSE3, SSE2, and SSE instructions and it can optimize for
the Intel Core processor family.