similar to: [LLVMdev] LLVM OPTIMIZATION using SSAPRE

On Fri, Nov 25, 2011 at 6:41 AM, josey's...JJ frm kollam nw @ calicut.... <joseykollam at gmail.com> wrote: > i wish to develop llvm SSAPRE compiler optimization for my engineering > academic project .for,that i have a sample c++ program and its .ll > file.anyone have SSAPRE implementation in c++. if anyone have, please give > me that implementation immediately. In the old

i wish to develop llvm SSAPRE compiler optimization for my engineering academic project .for,that i have a sample c++ program and its .ll file.anyone have SSAPRE implementation in c++. if anyone have, please give me that implementation immediately. joseykollam at gmail.com josey @ 9895685353 elw technologies cochin -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi LLVMers, I am a PHD student in CS dept in UIUC, I am doing a project for Vikram's course, it is about PRE. I would like to know why you didn't choose SSAPRE in LLVM, since it seems to be more suitable for LLVM (it can operate directly on SSA form and avoid the conversion between SSA and bit-vector). Can anyone tell me the reason? Xuehai

On Apr 2, 2008, at 10:11 PM, Xuehai Qian wrote: > Hi LLVMers, > I am a PHD student in CS dept in UIUC, I am doing a project for > Vikram's course, it is about PRE. I would like to know why you didn't > choose SSAPRE in LLVM, since it seems to be more suitable for LLVM (it > can operate directly on SSA form and avoid the conversion between SSA > and bit-vector). Can

The project SSAPRE is listed in the LLVM website, and the related paper indicated the implementation was almost complete in 2002. Since I do not see the implementation in the current LLVM source base, could anyone provide an update on the status of the project ? Thanks. Xiangyun Kong

On Apr 4, 2008, at 4:51 PM, Daniel Berlin wrote: > On Fri, Apr 4, 2008 at 2:38 AM, Bill Wendling <isanbard at gmail.com> > wrote: >> On Apr 2, 2008, at 10:11 PM, Xuehai Qian wrote: >>> Hi LLVMers, >>> I am a PHD student in CS dept in UIUC, I am doing a project for >>> Vikram's course, it is about PRE. I would like to know why you >>>

On Fri, Apr 4, 2008 at 2:38 AM, Bill Wendling <isanbard at gmail.com> wrote: > On Apr 2, 2008, at 10:11 PM, Xuehai Qian wrote: > > Hi LLVMers, > > I am a PHD student in CS dept in UIUC, I am doing a project for > > Vikram's course, it is about PRE. I would like to know why you didn't > > choose SSAPRE in LLVM, since it seems to be more suitable for

On Apr 4, 2008, at 8:28 PM, Daniel Berlin wrote: > On Fri, Apr 4, 2008 at 5:58 PM, Vikram S. Adve <vadve at cs.uiuc.edu> > wrote: >> >> >> Dan, >> >> Doesn't the paper also assume the invariant that phi operands are >> effectively dead after the Phi, which is true right after SSA is >> constructed, but potentially not after

On Fri, Apr 4, 2008 at 5:58 PM, Vikram S. Adve <vadve at cs.uiuc.edu> wrote: > On Apr 4, 2008, at 4:51 PM, Daniel Berlin wrote: > > > On Fri, Apr 4, 2008 at 2:38 AM, Bill Wendling <isanbard at gmail.com> > > wrote: > >> On Apr 2, 2008, at 10:11 PM, Xuehai Qian wrote: > >>> Hi LLVMers, > >>> I am a PHD student in CS dept in UIUC,

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Hi, We are planning to implement an analysis and optimization specifically meant for non-SSA code. We would like to know whether LLVM supports non-SSA IR? The other choice we have is to work with the GIMPLE code of GCC. We need your help in choosing the appropriate framework. thanks Saleena N National Institute of Technology Calicut India -------------- next part -------------- An HTML attachment

On Sun, Nov 3, 2013 at 9:19 AM, Christopher Wood <christopherwood07 at gmail.com> wrote: > On Sun, Nov 3, 2013 at 1:02 AM, Daniel Berlin <dberlin at dberlin.org> wrote: >> >> As for a "better" way to implement PRE, it depends on what algorithm >> you want to use. If you just want to write a PRE pass, that's easy >> enough without dominance

On Sun, Nov 3, 2013 at 1:02 AM, Daniel Berlin <dberlin at dberlin.org> wrote: > As for a "better" way to implement PRE, it depends on what algorithm > you want to use. If you just want to write a PRE pass, that's easy > enough without dominance frontiers. > I simply want to write a PRE pass to get a better understanding of the transformation. Any tips on where to

Is there a reason this is better than the modified algorithm created by Ferrante? It looks like yours has as bad a worst case time bound in reality. That is, the algorithm runs in O(sum of the size of all the dominance frontiers). http://www.cs.rice.edu/~keith/Embed/dom.pdf See figure 5. It will only touch nodes actually in the dominance frontier. This is what GCC uses. There are actually real