> > I think all these benefits are the gcc's __builtin_memset optimization > > than the explicit call to memset. > > ... or from complex memset() implementation (some chips even didn't do > `rep' fast enough somehow). Maybe code like below will be acceptable for > both optimizers and maintainers? we should just alias our memset to the __builtin one, and then provide a generic one from lib/ for the cases gcc needs to do a fallback. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- Follow-Ups:
- Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization
- From: Benjamin LaHaise <[email protected]>
- memset() with zeroes (Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization)
- From: Oleg Verych <[email protected]>
- Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization
- References:
- [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization
- From: Denis Cheng <[email protected]>
- Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization
- From: Oleg Verych <[email protected]>
- Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization
- From: "rae l" <[email protected]>
- Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization
- From: Oleg Verych <[email protected]>
- [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization
- Prev by Date: Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization
- Next by Date: Re: [PATCH] Update the alignment for 4K stacks.
- Previous by thread: Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization
- Next by thread: memset() with zeroes (Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization)
- Index(es):