[PATCH] D57254: [Outliner] Set nounwind for outlined functions

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: yroux, paquette, efriedma, t.p.northover, SjoerdMeijer.
Herald added subscribers: hiraditya, javed.absar.

This prevents the outlined functions from pulling in a lot of unnecessary code
in our downstream libraries/linker. Which stops outlining making codesize
worse in c++ code with no-exceptions.

It appears that we can outline from functions that throw, so I've made this
only apply if all the parent functions are nounwind.


https://reviews.llvm.org/D57254

Files:
  llvm/lib/CodeGen/MachineOutliner.cpp
  llvm/test/CodeGen/AArch64/machine-outliner-throw.ll
  llvm/test/CodeGen/AArch64/machine-outliner.ll

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