https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81763
--- Comment #14 from Mike Lothian <mike at fireburn dot co.uk> --- I've been playing around with GCC 7.2.0 again When compiling a 32bit LLVM with -O2 -march=native, llvm-tblgen runs indefinitely during the build so it never completes Doing the same with -O2 -march=native -mno-bmi or using GCC 6.4.0 allows it to build From what I can see llvm-tblgen is a C++ program
