[PATCH] D129852: [AArch64][SVE] Sink op into loop if it's used by PTEST and known to zero inactive lanes.

[Sander de Smalen via Phabricator via llvm-commits]

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This helps fold away the ptest instructions, which needs the knowledge on whether
the general predicate is known to zero the inactive lanes.

This fixes some PTEST regressions introduced by D129282 <https://reviews.llvm.org/D129282>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D129852

Files:
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/test/CodeGen/AArch64/sve-ptest-removal-sink.ll

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