On Tue, Jul 9, 2019 at 1:41 AM Linus Walleij <linus.wall...@linaro.org> wrote: > > On Mon, Jul 8, 2019 at 10:31 PM Arnd Bergmann <a...@arndb.de> wrote: > > > llvm gets confused by inline asm with .rep directives, > > Are the LLVM developers aware of the bug? > It seems like something we can work around but should > eventually be fixed properly in LLVM, right?
Arnd filed the bug yesterday. I looked at it; so someone working on LLVM is aware of it. The kernel is definitely exercising weak points in our inline assembly support. > > Link: https://bugs.llvm.org/show_bug.cgi?id=42539 > I guess this brings up the old question whether the compiler should > be worked around or just considered immature, but as it happens this Definitely a balancing act; we prioritize work based on what's feasible to work around vs must be implemented. A lot of my time is going into validation of asm goto right now, but others are ramping up on the integrated assembler (clang itself can be invoked as a substitute for GNU AS; but there's not enough support to do `make AS=clang` for the kernel just yet). -- Thanks, ~Nick Desaulniers
