| Issue |
174328
|
| Summary |
[DAG] SDPatternMatch - extend MinMax matchers to detect flippable signed/unsigned cases
|
| Labels |
good first issue,
llvm:SelectionDAG
|
| Assignees |
|
| Reporter |
RKSimon
|
Follow up to #174327
The m_SMaxLike/m_SMinLike/m_UMaxLike/m_UMinLike matchers can be extended to match the unsigned/signed equivalents if the operand signbits are known to be both zero or one.
You will have to investigate the best approach, but this is can probably best be achieved by using the m_Negative/m_StrictlyPositive/m_NonNegative/m_NonPositive matchers proposed from #174327, extending the MinMaxLike matchers with additional patterns that include them.
Related to #174325
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