[llvm-dev] How to dump broken IR from LLVM backend?

[Don Hinton via llvm-dev]

Unfortunately, it depends on which tool you are running, e.g.:

$ bin/clang -cc1 --help | grep verifier
  -disable-llvm-verifier  Don't run the LLVM IR verifier pass

$ bin/opt --help-list-hidden | grep disable-verify
  -disable-verify                                                - Do not
run the verifier

On Sun, Oct 22, 2017 at 9:37 AM, Dipanjan Das via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

>
> Neither '-disable-verify' nor '-mllvm -disable-verify' seem to work with
> LLVM/Clang 3.8.0
>
> On 22 October 2017 at 00:50, Siddharth Bhat <siddu.druid at gmail.com> wrote:
>
>> You can also `-disable-verify -o <output-filename> ` which will disable
>> the verify check.
>>
>> On Sat, 21 Oct 2017 at 23:54 Dipanjan Das via llvm-dev <
>> llvm-dev at lists.llvm.org> wrote:
>>
>>>
>>> Yes, that definitely works. Wanted to know if there's a switch for file
>>> output or not.
>>>
>>> On 21 October 2017 at 23:45, 陳韋任 <chenwj.cs97g at g2.nctu.edu.tw> wrote:
>>>
>>>> Just use Unix IO redirect? `llc -mllvm -print-after-all &> a.txt`
>>>>
>>>> 2017-10-22 14:17 GMT+08:00 Dipanjan Das via llvm-dev <
>>>> llvm-dev at lists.llvm.org>:
>>>>
>>>>>
>>>>> Seems like "-mllvm -print-after-all" does the trick. Is there any
>>>>> switch that dumps the output to a file instead of console?
>>>>>
>>>>> On 21 October 2017 at 21:33, Dipanjan Das <mail.dipanjan.das at gmail.com
>>>>> > wrote:
>>>>>
>>>>>>
>>>>>> My pass complains and gives up after spitting out:
>>>>>>
>>>>>> ======================================
>>>>>> Instruction does not dominate all uses!
>>>>>>   %44 = icmp ne i8** %endptr, null
>>>>>>   br i1 %44, label %32, label %33
>>>>>> Instruction has bogus parent pointer!
>>>>>> ======================================
>>>>>>
>>>>>> Is there any way to dump the entire IR even in broken form from the
>>>>>> backend so that I can inspect what's going on?
>>>>>>
>>>>>> --
>>>>>>
>>>>>> Thanks & Regards,
>>>>>> Dipanjan
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> Thanks & Regards,
>>>>> Dipanjan
>>>>>
>>>>> _______________________________________________
>>>>> LLVM Developers mailing list
>>>>> llvm-dev at lists.llvm.org
>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Wei-Ren Chen (陳韋任)
>>>> Homepage: https://people.cs.nctu.edu.tw/~chenwj
>>>>
>>>
>>>
>>>
>>> --
>>>
>>> Thanks & Regards,
>>> Dipanjan
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> llvm-dev at lists.llvm.org
>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>
>> --
>> Sending this from my phone, please excuse any typos!
>>
>
>
>
> --
>
> Thanks & Regards,
> Dipanjan
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
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