[llvm-dev] Printing the analysis result of lazy value info

[Juneyoung Lee via llvm-dev]

This was because CVP didn't preserve LVI.

I made a patch that deals with this - https://reviews.llvm.org/D59349

Juneyoung Lee

On Tue, Mar 12, 2019 at 3:16 AM Juneyoung Lee <juneyoung.lee at sf.snu.ac.kr>
wrote:

> Hello all, I just read mails.
>
> >
> https://github.com/regehr/llvm-transformation-pass/blob/master/hello/hello.cpp
> Thank you for the program, I'll try it.
>
> > If you want to spend some time tracking it down, I'd be happy to review
> a patch.
> Yep, I'll track it down and make a patch.
>
> Juneyoung Lee
>
> On Tue, Mar 12, 2019 at 2:18 AM Philip Reames <listmail at philipreames.com>
> wrote:
>
>> I'd have expected the command you ran to work.  I'm guessing there's some
>> bug that's crept in.
>>
>> If you want to spend some time tracking it down, I'd be happy to review a
>> patch.
>>
>> Philip
>> On 3/7/19 3:15 AM, Juneyoung Lee via llvm-dev wrote:
>>
>> Hello all,
>>
>> How can I see the result of lazy value info analysis?
>>
>> I ran a command `opt -lazy-value-info -correlated-propagation
>> -print-lazy-value-info example.ll -disable-output` with a following program
>> as the input:
>>
>> ```
>> define i32 @f(i32 %a, i32 %b) {
>>   %i = icmp eq i32 %a, 10
>>   br i1 %i, label %A, label %B
>> A:
>>   %c = add i32 %a, 20
>>   ret i32 %c
>> B:
>>   ret i32 0
>> }
>> ```
>>
>> However, it shows a following line only:
>>
>> ```
>> LVI for function 'f':
>> ```
>>
>> Thank you :)
>> Juneyoung Lee
>>
>>
>> _______________________________________________
>> LLVM Developers mailing listllvm-dev at lists.llvm.orghttps://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>>
>
> --
>
> Juneyoung Lee
> Software Foundation Lab, Seoul National University
>


-- 

Juneyoung Lee
Software Foundation Lab, Seoul National University
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