Christophe Leroy <christophe.le...@csgroup.eu> writes: > cpu-as-y is there to force assembler building options. > But there is no need for that. Gcc is passed the necessary > options and it automatically pass the appropriate option to > GAS. > > GCC is given -maltivec when relevant, so no need > for -Wa,-maltivec in addition > > And -Wa,-many is wrong as it will hide innapropriate > instructions. Better to detect them and handle them on a > case by case basis. > -Wa,-many was added by commit 960e30029863 ("powerpc/Makefile: > Fix PPC_BOOK3S_64 ASFLAGS") in order to fix an issue with > clang and the passed -Wa,-mpower4 option. But we have now > removed it expecting the compiler to automatically pass the > proper options and instructions based on -mcpu=power4
I wanted to apply this one, but it caused a lot of breakage for big endian Book3S-64 builds - where we build for power4 but have lots of code that uses >= power5 instructions. I'll try and get those all fixed and pick this up for the next merge window. cheers