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On 13 February 2012 00:59, Talin <viridia at gmail.com> wrote: > Here's my latest version of Hashing.h, which I propose to add to llvm/ADT. > Comments welcome and encouraged. > /// Adapted from MurmurHash2 by Austin Appleby Just out of curiosity, why not MurmurHash3 ? This page seems to suggest that #2 has some flaw, and #3 is better all round:

Here's my latest version of Hashing.h, which I propose to add to llvm/ADT. Comments welcome and encouraged. On Thu, Feb 9, 2012 at 11:23 AM, Talin <viridia at gmail.com> wrote: > By the way, the reason I'm bringing this up is that a number of folks are > currently working on optimizing the use of hash tables within LLVM's code > base, and unless we can come up with a

LLVM currently has a bunch of different hashing algorithms scattered throughout the code base. There's also a number of places in the code where a FoldingSetNodeID is created for the purpose of calculating a hash, and then discarded. From an efficiency standpoint, this isn't all that bad unless the number of individual items being hashed > 32, at which point the SmallVector overflows

By the way, the reason I'm bringing this up is that a number of folks are currently working on optimizing the use of hash tables within LLVM's code base, and unless we can come up with a common hashing facility, there will be an increasing proliferation of cut & paste copies of hash functions. So feedback would be nice. On Tue, Feb 7, 2012 at 10:58 PM, Talin <viridia at

Jeffrey and I are working on future standard library functionality for hashing user defined types: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3333.html I would much rather have an interface that is close to or mirrors this one. We already have some field experience with it, and using it in LLVM and Clang would provide more. Also, it would be possible to essentially share code

On Fri, Feb 17, 2012 at 1:53 AM, Chandler Carruth <chandlerc at google.com>wrote: > Jeffrey and I are working on future standard library functionality for > hashing user defined types: > > http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3333.html > > I would much rather have an interface that is close to or mirrors this > one. We already have some field

On Mon, Feb 13, 2012 at 1:22 AM, Jay Foad <jay.foad at gmail.com> wrote: > On 13 February 2012 00:59, Talin <viridia at gmail.com> wrote: > > Here's my latest version of Hashing.h, which I propose to add to > llvm/ADT. > > Comments welcome and encouraged. > > > /// Adapted from MurmurHash2 by Austin Appleby > > Just out of curiosity, why not

Hello folks, TL;DR: This is my proposed hashing interface based on a proposed standard hashing interface. It also is implemented with a much faster and higher quality algorithm than the current one. This is an *early draft* of the code, looking for initial feedback. There has been recent interest in improving the quality and consistency of LLVM's approach to hashing. In particular, getting

Hi, I am not sure if this has been fixed already or not but I wasn't able to find any mention of it. The error I am getting is: =============================================================== [2007/04/12 22:41:00, 0, effective(0, 0), real(0, 0)] lib/fault.c:fault_report(37) INTERNAL ERROR: Signal 11 in pid 18617 (3.0.10-1.4E.9) Please read the appendix Bugs of the Samba HOWTO