I'm using icc (ICC) 15.0.1 20141023 on a Haswell-based system. My software library has CPU-specific code using either SSE2, SSE41, AVX2, or KNCNI intrinsics. icc is successfully compiling the KNC code so I need to disable its execution at runtime. I'm familiar with using CPUID to test at runtime whether an ISA is supported, having done so for SSE2, SSE41, and AVX2. The intel intrinsics guide lists the CPUID as KNCNI but I can't find any CPUID documentation indicating which bit this corresponds to in the registers.
Which CPUID bit index indicates KNCNI?