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I ran into a problem recently trying to update a package which uses S4 methods using a recent beta of R. I think I can reproduce it with a simple example. I have package called `testpkg' in directory testpkg/. In the R/ subdirectory of testpkg/ I have a file called testpkg.R which contains the following two lines: setClass("testpkg", representation(pts = "list"))

Most of my programs contain loops that the LoopDeletion pass is unable to remove. It appears that the following code in LoopDeletion.cpp:152 is the culprit: ScalarEvolution& SE = getAnalysis<ScalarEvolution>(); const SCEV *S = SE.getMaxBackedgeTakenCount(L); if (isa<SCEVCouldNotCompute>(S)) return Changed; So, LoopDeletion thinks my loops might be infinite so it

Hello all, I have to import numeric data from file but found it contains Infinite values which need to be eliminated. I tried to replace them in this way: data[which(data=="-Inf")] <- -0.3 data[which(data=="+Inf")] <- 0.3 But, somehow, the Infinite values stayed there. Any suggestions? regards, N. -- View this message in context:

...alysis of a problematic (IMO) example: We start with ``` define void @infloop(i1 %c) { entry: br i1 %c, label %l, label %e l: br label %l e: ret void } define void @main_func() { entry: call void @infloop(i1 1) ret void } ``` In this program `@main_func`, when called, will loop infinitely. If we run this program through `opt -functionattrs -prune-eh -early-cse`, we get ``` ; Function Attrs: nounwind readnone define void @infloop(i1 %c) #0 { entry: br i1 %c, label %l, label %e l: ; preds = %l, %entry br label %l e:...

Dear All, Can R perform multivariate integration with infinite limits of integration? Thanks in advance, Paul

Andrew Clinton wrote: > Most of my programs contain loops that the LoopDeletion pass is unable > to remove. It appears that the following code in LoopDeletion.cpp:152 > is the culprit: > > ScalarEvolution& SE = getAnalysis<ScalarEvolution>(); > const SCEV *S = SE.getMaxBackedgeTakenCount(L); > if (isa<SCEVCouldNotCompute>(S)) > return

I'm having trouble to do an infinite sum in R I want to do the infinite sum of 1/(1+n) how would I do this in R? Thank You -- View this message in context: http://r.789695.n4.nabble.com/How-to-do-an-infinite-sum-in-R-tp4649770.html Sent from the R help mailing list archive at Nabble.com.

Hi, All: Is it legal to delete empty infinite loop like this : "while(1) {}"? It is interesting that both llvm and gcc keep the loop, however Open64 delete it. If it is safe to delete this loop, it would be lot easier to delete non-obvious dead loop like following as compiler doesn't need to prove if the loop in question is infinite or not. Currently llvm is not able to

On 11/24/2010 06:55 PM, Owen Anderson wrote: > On Nov 23, 2010, at 9:22 AM, Andrew Clinton wrote: > > >> Most of my programs contain loops that the LoopDeletion pass is unable >> to remove. It appears that the following code in LoopDeletion.cpp:152 >> is the culprit: >> >> ScalarEvolution& SE = getAnalysis<ScalarEvolution>(); >>

On Nov 23, 2010, at 9:22 AM, Andrew Clinton wrote: > Most of my programs contain loops that the LoopDeletion pass is unable > to remove. It appears that the following code in LoopDeletion.cpp:152 > is the culprit: > > ScalarEvolution& SE = getAnalysis<ScalarEvolution>(); > const SCEV *S = SE.getMaxBackedgeTakenCount(L); > if

Hi, dear Wenren: Thank you so much for sharing this info. I really appreciate it. Now I can move on deleting dead non-countable loops. Thank you again! Shuxin On 11/14/12 12:56 AM, 陳韋任 (Wei-Ren Chen) wrote: > On Wed, Nov 14, 2012 at 12:22:33AM -0800, Shuxin Yang wrote: >> I do some google, I cannot find the answer... >> I check C std, I cannot find answer either. >>

...> delete it. > > I think it's illegal to delete such infinite loop, perhapes you should > file a bug report to open64. That's my 2 cents. The reason I think it's illegal is because if you remove it, then the behavior is different. One with infinite empty loop will run infinitely, the other w/o infinite empty loop will exit immediately. That's my point. Regards, chenwj -- Wei-Ren Chen (陳韋任) Computer Systems Lab, Institute of Information Science, Academia Sinica, Taiwan (R.O.C.) Tel:886-2-2788-3799 #1667 Homepage: http://people.cs.nctu.edu.tw/~chenwj

On 11/24/2010 03:36 PM, Nick Lewycky wrote: > Andrew Clinton wrote: >> Most of my programs contain loops that the LoopDeletion pass is unable >> to remove. It appears that the following code in LoopDeletion.cpp:152 >> is the culprit: >> >> ScalarEvolution& SE = getAnalysis<ScalarEvolution>(); >> const SCEV *S =

On 11/25/2010 12:59 PM, Andrew Clinton wrote: > On 11/24/2010 06:55 PM, Owen Anderson wrote: >> On Nov 23, 2010, at 9:22 AM, Andrew Clinton wrote: >> >> >>> Most of my programs contain loops that the LoopDeletion pass is unable >>> to remove. It appears that the following code in LoopDeletion.cpp:152 >>> is the culprit: >>> >>>

On Wed, Nov 14, 2012 at 12:22:33AM -0800, Shuxin Yang wrote: > I do some google, I cannot find the answer... > I check C std, I cannot find answer either. > > Delete infinite empty loop is boring, but if C/C++ lawyers could tell it > is safe to to so, > it would obviate the need to prove a non-countable loop infinite or not > before > DCE can delete it. > > That

Hello, I am trying to run an ordinal logistic regression (polr) using the package 'MASS'. I have successfully run other regression classes (glm, multinom) without much problem, but with the 'polr' class I get the following error: " Error in svd(X) : infinite or missing values in 'x' " which appears when I run the "summary" command. The data file is

I do some google, I cannot find the answer... I check C std, I cannot find answer either. Delete infinite empty loop is boring, but if C/C++ lawyers could tell it is safe to to so, it would obviate the need to prove a non-countable loop infinite or not before DCE can delete it. That is the answer I'm waiting for to delete a disgusting dead non-countable loop in my way. On 11/14/2012

On Sat, Jun 27, 2015 at 2:46 PM, Daniel Berlin <dberlin at dberlin.org> wrote: > In C, dunno, but in LLVM, it means they aren't readonly :) In that case, -functionattrs needs to be fixed: define void @infloop() { entry: br label %l l: br label %l } == opt -functionattrs ==> ; Function Attrs: readnone define void @infloop() #0 { entry: br label %l l:

Hi, I am processing tick data and my code has stopped working as I have increased the size of data being processed. Now I am receiving error for basic tasks in RConsole: > a = c(1:1000) Error: evaluation nested too deeply: infinite recursion / options(expressions=)? My R code worked fine with 50 stocks and 500,000 rows per stock, but when I increased this to 50 stocks and 5,000,000 rows per

Running -early-cse on declare void @rn() readnone nounwind define void @f() { entry: call void @rn() ret void } removes the call to @rn(). But @rn() could have had an infinite loop in it in which case @f() went from being a non-terminating program to an terminating no-op. Is this intentional? The only way I can see this transform being legal is if infinite loops are declared to have