llvm dev - Aug 2007 - [LLVMdev] Debugger for Register Allocation

Hi guys,

     I have been using a debugger for my register allocator. The debugger 
happened to be very useful at catching register assignment errors. I've 
put the debugger on-line, if anyone who is working with register 
allocation wants to use. The debugger itself has nothing to do with LLVM, 
but I've coded a spiller that prints the code in a format that the 
debugger can read. The page is:

http://compilers.cs.ucla.edu/fernando/projects/debugger/

all the best,

Fernando

On Aug 17, 2007, at 4:17 PM, Fernando Magno Quintao Pereira wrote:
>
> Hi guys,
>
>      I have been using a debugger for my register allocator. The  
> debugger
> happened to be very useful at catching register assignment errors.  
> I've
> put the debugger on-line, if anyone who is working with register
> allocation wants to use. The debugger itself has nothing to do with  
> LLVM,
> but I've coded a spiller that prints the code in a format that the
> debugger can read. The page is:
>
> http://compilers.cs.ucla.edu/fernando/projects/debugger/
Hi Fernando,

This looks quite useful. Do you think you can incorporate the code  
output the debugging info in smira to tot?

Also, it seems to make more sense to dump the info at the end of the  
register allocation pass. Is there any particular reason for you to  
add it to the spiller instead?

Thanks,

Evan
>
> all the best,
>
> Fernando
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

On Fri, 17 Aug 2007, Evan Cheng wrote:
> Also, it seems to make more sense to dump the info at the end of the
> register allocation pass. Is there any particular reason for you to
> add it to the spiller instead?
I think so. The problem is that any value in smira format is a binding 
(physical-location, virtual-variable) and this information is always 
available for the spiller. After the spiller runs, you only have physical 
registers in each instruction.

Fernando
>
> On Aug 17, 2007, at 4:17 PM, Fernando Magno Quintao Pereira wrote:
>
>>
>> Hi guys,
>>
>>      I have been using a debugger for my register allocator. The
>> debugger
>> happened to be very useful at catching register assignment errors.
>> I've
>> put the debugger on-line, if anyone who is working with register
>> allocation wants to use. The debugger itself has nothing to do with
>> LLVM,
>> but I've coded a spiller that prints the code in a format that the
>> debugger can read. The page is:
>>
>> http://compilers.cs.ucla.edu/fernando/projects/debugger/
>
>
>>
>> all the best,
>>
>> Fernando
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>