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...PM, Cameron Zwarich <zwarich at apple.com> wrote: > A natural loop is one whose header dominates all of the nodes in the loop. > There is probably some block outside of the loop jumping to a block in the > loop body. > > Cameron > > On Apr 29, 2011, at 7:43 PM, Bo Wu <bwu at cs.wm.edu> wrote: > > Hi, > > I found that some loops can not be identified by LoopInfo pass. For > example, the loop at line 3094 of rdopt.c of benchmark 464.h264ref from spec > cpu2006 is not a loop or a child (pr grandchild) of any loop in the loop > list generated by...

...who have exactly one entry point. But the IR of this loops shows that it's header only has one BB in preds. Does that mean LoopInfo can not identify some natural loops? Thanks, Bo -- Bo Wu Ph.D. student CAPS group Computer Science Department The College of William & Mary www.cs.wm.edu/~bwu -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110429/adfee39f/attachment.html>

...ich at apple.com>> wrote: > > A natural loop is one whose header dominates all of the nodes in > the loop. There is probably some block outside of the loop jumping > to a block in the loop body. > > Cameron > > On Apr 29, 2011, at 7:43 PM, Bo Wu <bwu at cs.wm.edu > <mailto:bwu at cs.wm.edu>> wrote: > >> Hi, >> >> I found that some loops can not be identified by LoopInfo pass. >> For example, the loop at line 3094 of rdopt.c of benchmark >> 464.h264ref from spec cpu2006 is not a lo...

A natural loop is one whose header dominates all of the nodes in the loop. There is probably some block outside of the loop jumping to a block in the loop body. Cameron On Apr 29, 2011, at 7:43 PM, Bo Wu <bwu at cs.wm.edu> wrote: > Hi, > > I found that some loops can not be identified by LoopInfo pass. For example, the loop at line 3094 of rdopt.c of benchmark 464.h264ref from spec cpu2006 is not a loop or a child (pr grandchild) of any loop in the loop list generated by LoopInfo pass. The...

...at apple.com>wrote: > >> A natural loop is one whose header dominates all of the nodes in the >> loop. There is probably some block outside of the loop jumping to a block in >> the loop body. >> >> Cameron >> >> On Apr 29, 2011, at 7:43 PM, Bo Wu <bwu at cs.wm.edu> wrote: >> >> Hi, >> >> I found that some loops can not be identified by LoopInfo pass. For >> example, the loop at line 3094 of rdopt.c of benchmark 464.h264ref from spec >> cpu2006 is not a loop or a child (pr grandchild) of any loop in the lo...

In my pass, I add LoopInfo as a required pass. Then I'd like to print the constant loop trip count of each loop if it has one. However, every time I call loop-> getSmallConstantTripCount(), it returns 0, even for a very simple loop: for(i=0; i<3; ++i) {;} What's the possible cause of this problem? regards, Bo -------------- next part -------------- An HTML attachment was

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Are you saying this is this the first time you've tried to compile it on the cluster? It's easy to determine if g++ is installed and in the PATH - just get a console on the cluster and type "g++". However, AFAIK cluster nodes are not usually configured for software development, are they? Typically you build your code locally and then job it out to the cluster? Greg

...was still there.**** > > ** ** > > OS: opensuse 10.1**** > > gcc, g++ version: 4.2.3**** > > ** ** > > Any idea?**** > > ** ** > > Bo**** > -- Bo Wu Ph.D student CAPS group Computer Science Department The College of William & Mary www.cs.wm.edu/~bwu -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20111031/1bbd6df3/attachment.html>

I've compiled llvm several times, but this is the first time I saw this error when I was trying to compile it in a cluster. checking tool compatibility... configure: error: g++|clang++|icc required but not found I am pretty sure g++ is installed and in the path. I then downloaded clang++ binary and set path. The error was still there. OS: opensuse 10.1 gcc, g++ version: 4.2.3 Any idea? Bo

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Hi, I received an email from Nvidia, saying that llvm now supports ptx code generation. I am confused how to use llvm as my backend, as it seems clang's support for cuda is not complete yet. My question is: given a cuda program, how can I use llvm to generate ptx code? Thanks, Bo -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, The compilation of the following code void f(int *a, int b[], int n) { int i; for(i=0; i< n; ++i) a[i] = b[i]; } gives the IR: define void @f(i32* nocapture %a, i32* nocapture %b, i32 %n) nounwind { %1 = icmp sgt i32 %n, 0 br i1 %1, label %.lr.ph, label %._crit_edge .lr.ph: ; preds = %0 %tmp = zext i32 %n to i64 br label %2 ;