[llvm] 3729a5a - [SCEV] Fix a warning on an unused lambda capture

[Kazu Hirata via llvm-commits]

Hi David,

Ah, I see.  I'll do that next time I encounter similar issues.

Thanks,

Kazu Hirata

On Mon, Oct 25, 2021 at 11:40 AM David Blaikie <dblaikie at gmail.com> wrote:

> Generally if the lambda's non-escaping/locally scoped, I'd suggest using
> [&] for capture to simplify the code/maintenance.
>
> On Mon, Oct 25, 2021 at 12:45 AM Kazu Hirata via llvm-commits <
> llvm-commits at lists.llvm.org> wrote:
>
>>
>> Author: Kazu Hirata
>> Date: 2021-10-25T00:45:18-07:00
>> New Revision: 3729a5abf41d992535508e55c5d975f98c54dba0
>>
>> URL:
>> https://github.com/llvm/llvm-project/commit/3729a5abf41d992535508e55c5d975f98c54dba0
>> DIFF:
>> https://github.com/llvm/llvm-project/commit/3729a5abf41d992535508e55c5d975f98c54dba0.diff
>>
>> LOG: [SCEV] Fix a warning on an unused lambda capture
>>
>> This patch fixes:
>>
>>   llvm/lib/Analysis/ScalarEvolution.cpp:12770:37: error: lambda
>>   capture 'this' is not used [-Werror,-Wunused-lambda-capture]
>>
>> Added:
>>
>>
>> Modified:
>>     llvm/lib/Analysis/ScalarEvolution.cpp
>>
>> Removed:
>>
>>
>>
>>
>> ################################################################################
>> diff  --git a/llvm/lib/Analysis/ScalarEvolution.cpp
>> b/llvm/lib/Analysis/ScalarEvolution.cpp
>> index f0e3237be0a0..d3ae7da77b1a 100644
>> --- a/llvm/lib/Analysis/ScalarEvolution.cpp
>> +++ b/llvm/lib/Analysis/ScalarEvolution.cpp
>> @@ -12767,7 +12767,7 @@ void
>> ScalarEvolution::forgetMemoizedResults(ArrayRef<const SCEV *> SCEVs) {
>>        ++I;
>>    }
>>
>> -  auto RemoveSCEVFromBackedgeMap = [this, &ToForget](
>> +  auto RemoveSCEVFromBackedgeMap = [&ToForget](
>>        DenseMap<const Loop *, BackedgeTakenInfo> &Map) {
>>          for (auto I = Map.begin(), E = Map.end(); I != E;) {
>>            BackedgeTakenInfo &BEInfo = I->second;
>>
>>
>>
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>
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