033bf61cc5
Brand index was a feature some Pentium III and Pentium 4 CPUs. It provided an index into a software lookup table to provide a brand name for the CPU. This is separate from the family/model. It's unclear to me why this index being non-zero was used to block checking family/model. None of the CPUs that had a non-zero brand index are supported by __builtin_cpu_is or target multi-versioning so this should have no real effect.
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================