similar to: [LLVMdev] debug information

Displaying 20 results from an estimated 200000 matches similar to: "[LLVMdev] debug information"

2012 Oct 05
0
[LLVMdev] library functions
Hi , I doubt LLVM has the infrastructure in place to do so ,One way to accomplish this by implementing decompiler to convert library functions to LLVM IR and run the LLVM analyze pass over converted LLVM IR ,Then revert back from LLVM IR to your library format. Thanks ~Umesh On Thu, Oct 4, 2012 at 9:47 PM, apala guha <aguha at uchicago.edu> wrote: > Hi, > > Is there any
2012 Nov 09
0
[LLVMdev] translating from OpenMP to CUDA
The PTX back-end is robust (it's based on the sources used by nvcc), but I'm not sure about the OpenMP representation in LLVM IR. I believe the OpenMP constructs are already lowered into libgomp calls before leaving DragonEgg. It's been awhile since I've loooked at it though. If you use the PTX back-end and have any issues, please don't hesitate to post to the list and cc:
2012 Oct 04
2
[LLVMdev] library functions
Hi, Is there any way to analyze library functions using LLVM, in the same manner as source code functions? Thanks. -Apala
2012 Nov 08
3
[LLVMdev] translating from OpenMP to CUDA
Hi, Is it possible to translate an OpenMP program to CUDA using LLVM? I read that dragonegg has a OpenMP front-end and LLVM has a PTX back-end. I don't know how mature these tools are. Please let me know. Thanks. -Apala Postdoctoral Scholar Department of Computer Science, University of Chicago Computation Institute, Argonne National Laboratory http://sites.google.com/site/apalaguha/home/
2012 Sep 07
2
[LLVMdev] counting branch frequencies
Hi, Is there a way to count branch frequencies using LLVM infrastructure? Thanks. -Apala Postdoctoral Scholar Department of Computer Science, University of Chicago Computation Institute, Argonne National Laboratory http://sites.google.com/site/apalaguha/home/ -------------- next part -------------- An HTML attachment was scrubbed... URL:
2012 Oct 09
0
[LLVMdev] function calls
On 10/9/12 1:19 PM, apala guha wrote: > Hi, > > I am seeing some strange function calls in the LLVM IR, such as, 'call > llvm.lifetime.start'. What are these functions and why are they > appearing in the IR? These are LLVM intrinsics that provide information to the optimization passes. See the Language reference manual (http://llvm.org/docs/LangRef.html) for a
2012 Sep 19
0
[LLVMdev] counting branch frequencies
Another issue is with ProfileInfo::getExecutionCount(Function* F). Looking at the source code and results, I am seeing that it always returns the execution count of the entry basic block of the function. If the entry basic block is part of a loop, its execution count does not match the function invocation count. Is my assumption wrong, that ProfileInfo::getExecutionCount(Function* F) is
2012 Dec 06
1
[LLVMdev] source code information
Hi, I had asked about LLVM debug information a while back, but was told that it is not well-maintained. Is there any way I can IR functions and loops with their source code positions? Thanks -Apala
2012 Oct 09
2
[LLVMdev] function calls
Hi, I am seeing some strange function calls in the LLVM IR, such as, 'call llvm.lifetime.start'. What are these functions and why are they appearing in the IR? Thanks. -Apala
2012 Sep 19
3
[LLVMdev] counting branch frequencies
Thanks everyone for the replies. After some experimentation, I found that the order in which the passes are specified matters: opt -O3 -profile-loader matmult.bc -o matmult.opt.bc (works) opt -profile-loader -O3 matmult.bc -o matmult.opt.bc (does not work) Also, I am able to avoid the inconsistency warning only for optimization levels -O3 and -O2. I get that warning when using -O1 and
2012 Dec 06
2
[LLVMdev] llvm-ar
Hi, I am trying to link archives built by llvm-ar with other bitcode files, using llvm-link. But llvm-link seems unable to read files produced by llvm-ar. Also, clang seems unable to read files produced by llvm-ar. Am I doing something wrong or is this the expected behavior? Is there any work-around? Thanks. -Apala
2012 Sep 19
0
[LLVMdev] counting branch frequencies
Hi Apala, Dibyendu is correct that this is likely due to pass order, but things get a bit complicated with -O[1-9] or -std-compile-opts as they insert early passes *before* the profiling code. I recommend that you use identical optimizations to insert instrumentation and to load the profiling data. E.g.: opt -insert-edge-profiling -O3 foo.bc -o foo.2.bc opt -profile-loader -O3 foo.bc
2012 Sep 19
1
[LLVMdev] counting branch frequencies
Can we not run the -insert-edge-profiling and -profile-loader passes at the beginning of the opt? Orthogonal point is, is it worth doing any optimizations when -insert-edge-profiling is specified on command line? -Prashantha -----Original Message----- From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Alastair Murray Sent: Wednesday, September 19, 2012
2012 Dec 06
0
[LLVMdev] llvm-ar
On Dec 5, 2012, at 8:15 PM, apala guha <aguha at uchicago.edu> wrote: > I am trying to link archives built by llvm-ar with other bitcode files, using llvm-link. But llvm-link seems unable to read files produced by llvm-ar. Also, clang seems unable to read files produced by llvm-ar. Am I doing something wrong or is this the expected behavior? Is there any work-around? You're not
2012 Sep 11
2
[LLVMdev] counting branch frequencies
Thanks Alastair. Is it possible to associate the branch frequency counts with the basic blocks in the intermediate representation? (e.g. Can I access basic block frequencies in runOnFunction()?) Also, I was able to produce a 'llvmprof.out' file. What is the format of this file? How can I parse it? Thanks. -Apala > > > On 09/07/2012 01:25 PM, Alastair Murray wrote: >
2012 Sep 18
4
[LLVMdev] counting branch frequencies
I tried getting profile data from LLVM 3.1, using the method mentioned below. I tried it out on a simple matrix multiplication program. However, I noticed the following problems: 1. There is a warning message: "WARNING: profile information is inconsistent with the current program!" 2. The basic block counts (obtained from ProfileInfo::getExecutionCount(const BasicBlock*)) are
2013 Jan 01
2
[LLVMdev] IR function pointers
Hi Tim, This is C++ indeed. Basically, I am profiling the code. So, these edges that cannot be resolved at compile time present a problem. Where can I find these devirtualization optimizations that you mentioned? Thanks. -Apala On 01/01/2013 12:18 PM, Tim Northover wrote: > > Hi, > > > For example: call void %1608(%"struct.LRT::RGBAucharFrameBuffer"* > > %1604)
2012 Sep 13
0
[LLVMdev] counting branch frequencies
Hi Apala, On 11/09/12 11:20, apala guha wrote: > Is it possible to associate the branch frequency counts with the basic > blocks > in the intermediate representation? (e.g. Can I access basic block > frequencies in runOnFunction()?) Profile data really needs to be loaded at a module level, but once this has been done it can be accessed at any level (including function). In LLVM
2018 Apr 12
2
Why LLVM doesn't have debug information of function right parentheses?
Hi, On 12/04/2018 15:35, Frozen via llvm-dev wrote: > I added one attribute named EndLine in LLVM IR before. LLVM's part is > not hard, but will modify many places in Clang. I success for it, you > can try this way. > For loops, we use a range to keep track of the start and end of the loop for remarks: http://llvm.org/doxygen/classllvm_1_1Loop_1_1LocRange.html Maybe it would
2018 Apr 17
0
Why LLVM doesn't have debug information of function right parentheses?
I really wouldn't be sure this is the right direction to go anyway - as pointed out, there coudl be a return of a constant which would be a single instruction & it would make more sense to me to attribute that to the line where "return" is written, than where the closing brace is. I think this is, for my money, a legitimate difference in implementations between GCC and Clang -