[LLVMdev] DataStructure Analysis ds-aa can not stop when passing mysqld

[hc2428 at columbia.edu]

Quoting Chris Lattner <clattner at apple.com>:

Dear staff,
     I am using the ds-aa to pass mysqld. I compile mysqld 4.0.12  
statically (compile all libraries statically to the executable) and  
got the bc file, named it as mysqld.bc3.
     I use the command to pass:

opt -load <poolalloc install dir>/lib/libLLVMDataStructure.so -ds-aa  
mysqld.bc3 -print-alias-sets -disable-output

     However, I got a lot of "cast in ... " on output screen like this:

cast in strxnmov
         %13 = inttoptr i32 %10 to i8*           ; <i8*> [#uses=1]

     In addition, and pass can not stop for a long time, and the last  
output is the "cast in ... " as above.

Thanks,
Heming


>
> On May 13, 2009, at 7:22 AM, Stripf, Timo wrote:
>
>> Hi all,
>>
>> i?m working atm on a backend for a processor architecture that is    
>> capable of storing the carry flag of ADDC in an 1-bit register    
>> class. So I tried to lower the ADDC instruction to generate two    
>> register values as result. On the tablegen description of the    
>> instruction i came across the tablegen restriction that only one    
>> output result of one instruction is possible:
>>
>>  assert(NumResults <= 1 &&
>>         "We only work with nodes with zero or one result so far!");
>>
>> So my question is now how much work it would be to remove this    
>> restriction in tablegen. What do I have to take into consideration?
>>
>
> I don't know offhand, but this would be a very welcome improvement!
>
> -Chris