[PATCH] D63839: [ARM] Widening loads and narrowing stores

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: t.p.northover, simon_tatham, SjoerdMeijer, samparker, ostannard.
Herald added subscribers: hiraditya, kristof.beyls, javed.absar.
Herald added a project: LLVM.

MVE has instructions to widen as it loads, and narrow as it stores. This adds the required patterns and legalisation to make them work.

Patch by David Sherwood.


https://reviews.llvm.org/D63839

Files:
  llvm/lib/Target/ARM/ARMISelLowering.cpp
  llvm/lib/Target/ARM/ARMISelLowering.h
  llvm/lib/Target/ARM/ARMInstrMVE.td
  llvm/test/CodeGen/Thumb2/mve-ldst-offset.ll
  llvm/test/CodeGen/Thumb2/mve-ldst-postinc.ll
  llvm/test/CodeGen/Thumb2/mve-ldst-preinc.ll
  llvm/test/CodeGen/Thumb2/mve-shuffle.ll
  llvm/test/CodeGen/Thumb2/mve-widen-narrow.ll

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