| Issue |
153159
|
| Summary |
[AArch64] AArch64TargetLowering::computeKnownBitsForTargetNode - add support for AArch64ISD::MOV/MVN constants
|
| Labels |
good first issue,
backend:AArch64
|
| Assignees |
|
| Reporter |
RKSimon
|
Followup to #148596
AArch64TargetLowering::computeKnownBitsForTargetNode is still missing for the following constant nodes:
```
case AArch64ISD::MOVIedit:
case AArch64ISD::MOVImsl:
case AArch64ISD::MVNIshift:
case AArch64ISD::MVNImsl:
```
As its tricky to get codegen folds to consistently use these, it might be easiest to add test coverage to AArch64SelectionDAGTest.cpp (there are already some computeKnownBits tests in there) - adding unit test coverage for the existing AArch64ISD::MOVI and AArch64ISD::MOVIshift handling would be useful there as well.
CC @aabhinavg1
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