search for: a_red

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2013 Oct 23
0
[LLVMdev] First attempt at recognizing pointer reduction
...the reduction itself and outside of the loop. In your example you have for () *a = a++; … the “*a=“ part being a true use in the loop. This is a problem because at that point you would have to reduce the vectorized reduction. I.e if we wrote “a" as (pointer reduction, VF=2) as: %a_red = phi <2 x i32*> [preheader, <%a, 0>], [loop, %a_red_next] %a_red_next = gep %a_red, <3, 3> you would have to compute the value of “a” for the loop on every iteration from the vectorized reduction. %a_red = phi <2 x i32*> [preheader, <%a, 0>], [loop, %a_red_nex...
2013 Oct 23
2
[LLVMdev] First attempt at recognizing pointer reduction
On 23 October 2013 16:05, Arnold Schwaighofer <aschwaighofer at apple.com>wrote: > In the examples you gave there are no reduction variables in the loop > vectorizer’s sense. But, they all have memory accesses that are strided. > This is what I don't get. As far as I understood, a reduction variable is the one that aggregates the computation done by the loop, and is used
2001 Jul 16
1
polyroot() (PR#751)
In a bug report from Nov.28 2000, Li Dongfeng writes: ----- I have found that the polyroot() function in R-1.1.1(both solaris and Win32 version) gives totally incorrect result. Here is the offending code: # Polyroot bug report: # from R-1.1.1 > sort(abs(polyroot(c(1,-2,1,0,0,0,0,0,0,0,0,0,-2,5,-2,0,0,0,0,0,0,0,0,0,1,-2)))) [1] 0.8758259 0.9486499 0.9731015 1.5419189 1.7466214 1.7535362
2002 Oct 18
4
Netlogon no longer works in 2.2.6 with W2k client
Hi, We've got a fairly simple samba setup (no ldap/winbind etc) and until recently everything worked fine (using samba-2.2.5). But after switching to samba-2.2.6 w2k-clients fail to run the netlogon-scripts. When i look at the client it says: logonserver=\\<workstationname> BTW. The output of "nmblookup -S CPB" (to me) seems to say that CPB is the logonserver. querying CPB