Re: gcc4.6,how to remove werror

I could not find that WERROR override code at my kernels... Sorry delay it, I did make V=1. There are three kinds test. All targets are ARM. All Makefiles(top of kernel tree)-KBUILD_CFLAGS are same. KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-stric

Re: Effect of alignment and peeling on vectorised loops

On 30 November 2011 22:28, Michael Hope wrote: >>> This run also showed the affect of loop unrolling. The loop seems to >>> be unrolled for loops of <= 64 words and drops off in performance past >>> around 8 words. When the unrolling finally drops out, performance >>> increases by 101 %. >> >> I

[ACTIVITY] Nov 27 - Dec 1

Hi, - Ran eon with gcc 4.7: there are much more loops similar to the one in lp#831094 that get vectorized (due to some data ref analysis improvement), so the impact of disabling peeling for such loops (i.e. loops with low loop bound) is even bigger than for 4.6, and vectorization improves the perf