[PATCH] D67327: [ARM] Fix for MVE narrow load/store stack accesses

[Dave Green via Phabricator via llvm-commits]

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

Certain MVE instructions, such as the narrowing loads, can be created with frame indices even though they do not accept sp as a register. This makes sure that if we have situations like that, we have an emergency register to use as the frame base, to ensure that we do not run out of registers.


https://reviews.llvm.org/D67327

Files:
  llvm/lib/Target/ARM/ARMFrameLowering.cpp
  llvm/test/CodeGen/Thumb2/mve-stacksplot.mir

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