[llvm-dev] Using different opt with clang

[Peter Collingbourne via llvm-dev]

The LowerTypeTests pass normally runs during LTO (i.e. in the linker). I
would make sure that you've rebuilt lld or the gold plugin (whichever one
you are using) with your pass changes.

Peter

On Tue, Dec 3, 2019 at 11:07 AM David Blaikie via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> are you sure you're running the recompiled clang & not some existing clang
> you had on your system? Try putting something more blatant in your
> optimization pass, like an assert(false) or other ridiculous thing that'll
> make it obvious if the pass is/isn't running, perhaps?
>
> On Tue, Dec 3, 2019 at 2:03 PM Shishir V Jessu via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hi,
>>
>> I have made some changes in the LowerTypeTests Pass of opt, and would
>> like to use these changes with the clang version I have downloaded.
>>
>> I compiled clang and llvm from scratch, made my changes in
>> LowerTypeTests.cpp, and recompiled clang and opt. When I run clang with the
>> appropriate flags to invoke the pass, it invokes the pass as originally
>> written, but when I run opt on the relevant bitcode, it invokes the pass as
>> I have written it.
>>
>> How can I modify clang to make it use my version of opt to run the pass
>> I've changed? Thanks!
>>
>> Regards,
>> Shishir Jessu
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>> llvm-dev at lists.llvm.org
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>>
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-- 
-- 
Peter
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