| Issue |
135346
|
| Summary |
[SystemZ][TTI]Wrong costs for insertelement with even/odd indices
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
alexey-bataev
|
Looks like there is bug in SystemZTargetTransformInfo.cpp, SystemZTTIImpl::getVectorInstrCost:
```
if (Val->isIntOrIntVectorTy(BitWidth: 64))
return ((Index % 2 == 0) ? 1 : 0);
```
It returns cost 1 for insertion into lane 0 and cost 0 for insertion into lane 1, though looks like SystemZTTIImpl::getScalarizationOverhead implements different logic
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