[LiveRangeEdit][AIEX] Fix rematerialization crash#877

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andcarminati wants to merge 3 commits intoaie-publicfrom

andreu.fix.remattable

Commits on Mar 26, 2026

[AIEX][AIE2PS] Add base test with a cross regclass remat trial
andcarminati
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[AIEX] Manually revert "Clear stale ancestor live intervals after super-reg rewrite"
andcarminati
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[LiveRangeEdit] Improve rematerialization validation for register class compatibility
andcarminati
committed