It worked fine in Intel compiler. We used it a fair bit to sort out hot paths in C++ for high performance computing (where Fortran was the other main language).

It worked fine in Intel compiler. We used it a fair bit to sort out hot paths in C++ for high performance computing (where Fortran was the other main language). Now Intel have moved to LLVM as their compiler base I wonder if they've put some work into making it work there?