> +config TUNE_CELL > + bool "Optimize for Cell Broadband Engine" > + depends on PPC64 > + help > + Cause the compiler to optimize for the PPE of the Cell Broadband > + Engine. This will make the code run considerably faster on Cell > + but somewhat slower on other machines. This option only changes > + the scheduling of instructions, not the selection of instructions > + itself,
It _does_ change instruction selection, which is the main factor in the slowdown on other machines (and a big part of the speedup on Cell, too). It doesn't change which insns the compiler is allowed to use though, which is probably what you wanted to say? Segher _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
