On Mon, 2018-05-28 at 06:08:34 UTC, Christophe Leroy wrote: > When compiled with GCC 8.1, vmlinux is significantly bigger than > with GCC 4.8. > > When looking at the generated code with objdump, we notice that > all functions and loops when a 16 bytes alignment. This significantly > increases the size of the kernel. It is pointless and even > counterproductive as on the 8xx 'nop' also consumes one clock cycle. > > Size of vmlinux with GCC 4.8: > text data bss dec hex filename > 5801948 1626076 457796 7885820 7853fc vmlinux > > Size of vmlinux with GCC 8.1: > text data bss dec hex filename > 6764592 1630652 456476 8851720 871108 vmlinux > > Size of vmlinux with GCC 8.1 and this patch: > text data bss dec hex filename > 6331544 1631756 456476 8419776 8079c0 vmlinux > > Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/1c38976334c0efce1b285369a6037f cheers
