[llvm-dev] Trouble in reproducing bad codegen errors [GSoC]

preejackie via llvm-dev llvm-dev at lists.llvm.org
Sat Mar 16 15:11:46 PDT 2019


I also attached the shell script i used to generate those behavior

On 17/03/19 3:39 AM, preejackie wrote:
>
> Hi all,
>
> I'm working on finding(generating) programs which results in bad 
> codegen when (-g, !-g) option. As suggested in llvm-dev list I tried 
> diffing the disassembly of object files .text section with -g enabled 
> and not enabled for all SingleSource unittests .c files, I used all 
> optimization levels [0,1,2,3,s,z] but I didn't get any bad codegen 
> behavior.
>
> And then, I used csmith tool to randomly generate .cpp files and 
> compile them with (-g, !-g) at various opt levels, after trying for 3 
> hours I can only able to produce 2 bad codegen behaviors. Is there any 
> way for producing bad codegen behaviors?
>
> Csmith use many options to generate code, anyone with csmith 
> experience please guide me how to make use of those options to fullest 
> in this case?
>
> Thank you very much :)
>
> -- 
> Have a great day!
> PreeJackie

-- 
Have a great day!
PreeJackie

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