On Wed, Dec 8, 2010 at 5:59 AM, Prashanth S <prashant...@samsung.com> wrote: > > Dear All > > Our team in Samsung collected some performance metrics for the following > 3 GCC cross compilers > > Gentoo Complier(part of Chrome OS Build Environment) > GCC 4.4.1 (Code Sourcery). > Linaro (gcc-linaro-4.5-2010.11-1) > > Flags used to Build Linaro Tool chain > used Michael Hope Script .Just modified "GCCFLAGS = --with-mode=thumb > --with-arch=armv7-a --with-float=softfp --with-fpu=neon > --with-fpu=vfpv3-d16"
Does anyone know the effect of passing two -mfpu= options? I suspect the second may override the first. Also, we tend to avoid using -mfpu=neon by default, because a) it's not expected to bring a big benefit for general-purpose code, and b) the resulting code isn't compatible with v7 implementations such as Marvell's or NVIDIA's which don't support NEON. It would be interesting to compare with this option removed -- hopefully the results will come out about the same. Cheers ---Dave _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
