[PATCH] D157127: [CodeGen][AArch64] Don't split functions with a red zone on AArch64

[Daniel Hoekwater via Phabricator via llvm-commits]

dhoekwater created this revision.
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Because unconditional branch relaxation on AArch64 grows the stack to
spill a register, splitting a function would cause the red zone to be
overwritten. Explicitly disable MFS for such functions.

Depends on D157063 <https://reviews.llvm.org/D157063>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157127

Files:
  llvm/include/llvm/CodeGen/TargetInstrInfo.h
  llvm/lib/CodeGen/MachineFunctionSplitter.cpp
  llvm/lib/CodeGen/TargetInstrInfo.cpp
  llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
  llvm/lib/Target/AArch64/AArch64InstrInfo.h
  llvm/test/CodeGen/AArch64/machine-function-splitter.mir

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