llvm dev - Aug 2011 - [LLVMdev] profile.pl

Hi all

I want to use "'/home/llvm/src/utils/profile.pl' -edge
sort.bc"
command, but i face this error:

Error opening '/usr/local/lib/profile_rt.so':
/usr/local/lib/profile_rt.so:
cannot open shared object file: No such file or directory
  -load request ignored.
LLVM ERROR: Program used external function 'llvm_start_edge_profiling'
which
could not be resolved!
llvm-prof: Error opening 'llvmprof.out': No such file or directory
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On 8/1/11 12:16 PM, neda 8664 wrote:
> Hi all
>
> I want to use "'/home/llvm/src/utils/profile.pl 
<http://profile.pl>' -edge sort.bc" command, but i face this
error:
>
> Error opening '/usr/local/lib/profile_rt.so': 
> /usr/local/lib/profile_rt.so: cannot open shared object file: No such 
> file or directory
>   -load request ignored.
> LLVM ERROR: Program used external function
'llvm_start_edge_profiling'
> which could not be resolved!
> llvm-prof: Error opening 'llvmprof.out': No such file or directory
I haven't used profile.pl myself, but looking at the error, it looks 
like there's a run-time library (profile_rt.so) that it's looking for in
/usr/local/lib but can't find.

I suspect that profile_rt.so is built as part of LLVM, but since you 
haven't done a "make install," profile_rt.so is still just sitting
in
the Release/lib (or Debug+Asserts/lib) directory.

If you search for profile_rt.so in your LLVM object tree and change the 
script to load it from that directory instead, the script may work for you.

-- John T.
>
>
>
>
>
>
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i could not use profile.pl, however i did reinstall the llvm but didn't
solve my problem. is there is another way to extract profilling information
in llvm?
i have another question, i want know how can estimate execution time for
each operand such as mul ,add, ... ?
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