Hi, With this set of patches, it becomes possible to build a LTO'd kernel with LLVM/Clang on MIPS. This was tested on a Ingenic JZ4770 based system. It requires the linking step of the vmlinuz.bin to be done with binutils' LD instead of LLVM's ld.lld [1], but the vmlinuz ELF itself can be completely built with LLVM. Strangely, the LTO'd kernel is bigger in size (3.6 MiB vs. 3.1 MiB without LTO), which might be completely normal and I just have wrong expectations. Cheers, -Paul [1]: https://github.com/ClangBuiltLinux/linux/issues/1333 Paul Cercueil (3): MIPS: boot/compressed: Disable abicalls MIPS: boot/compressed: Build without LTO MIPS: Add support for LTO arch/mips/Kconfig | 1 + arch/mips/boot/compressed/Makefile | 7 +++++-- 2 files changed, 6 insertions(+), 2 deletions(-) -- 2.33.0
