The instruction is present in some library in the 24H2 update for Windows 11: ==8508==interception_win: unhandled instruction at 0x7ff83e193a40: 44 0f b6 1a 4c 8b d2 48 This could be generalized, but getting all the ModR/M byte combinations right is tricky. Many other classes of instructions handled in this file could use some generalization too.
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. ================================