[PATCH] D97453: [X86] Allow PTILEZEROV and PTILELOADDV to be rematerializable

[Pengfei Wang via Phabricator via llvm-commits]

pengfei created this revision.
pengfei added reviewers: LuoYuanke, craig.topper.
Herald added subscribers: hiraditya, qcolombet.
pengfei requested review of this revision.
Herald added a project: LLVM.
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Spilling and reloading AMX registers are expensive. We allow PTILEZEROV
and PTILELOADDV to be rematerializable to avoid the register spilling.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D97453

Files:
  llvm/lib/Target/X86/X86InstrAMX.td
  llvm/lib/Target/X86/X86InstrInfo.cpp
  llvm/test/CodeGen/X86/AMX/amx-across-func.ll
  llvm/test/CodeGen/X86/AMX/amx-lower-tile-copy.ll
  llvm/test/CodeGen/X86/AMX/amx-spill-merge.ll

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