[PATCH] D129751: [AArch64][SVE] Add patterns to select masked add/sub instructions

[Dinar Temirbulatov via Phabricator via llvm-commits]

dtemirbulatov created this revision.
dtemirbulatov added reviewers: peterwaller-arm, paulwalker-arm, bsmith, c-rhodes, MattDevereau.
Herald added subscribers: psnobl, hiraditya, kristof.beyls, tschuett.
Herald added a reviewer: efriedma.
Herald added a project: All.
dtemirbulatov requested review of this revision.
Herald added a project: LLVM.

Currently, we generate "select" operation with one operand of zeros based the mask of active elements we have and then we issue addition or subtraction we the result of "select". But instead we could issue just  masked based addition or subtraction with the mask of active elements.


https://reviews.llvm.org/D129751

Files:
  llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
  llvm/test/CodeGen/AArch64/sve-masked-add-sub.ll

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