[IVDescriptors] Call getOpcode on demand in getReductionOpChain. nfc#118777

Merged

Mel-Chen merged 2 commits intollvm:mainfrom

Mel-Chen:remove-call-getopcode-ivdes

Apr 30, 2025

Commits on Apr 30, 2025

[IVDescriptors][NFC] Refactor getReductionOpChain to remove the dependency of non-arithmetic reductions on getOpcode.
Mel-Chen
committed
Rebase, and remove isArithmeticRecurrenceKind
Mel-Chen
committed