[PATCH] D24462: [ARM] Don't convert switches to lookup tables of pointers with ROPI/RWPI

[Oliver Stannard via llvm-commits]

olista01 created this revision.
olista01 added reviewers: rengolin, srhines, t.p.northover, weimingz.
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Herald added subscribers: samparker, rengolin, aemerson.

With the ROPI and RWPI relocation models we can't always have pointers
to global data or functions in constant data, so don't try to convert
switches into lookup tables if the type of the PHI is a pointer type. We
can still safely emit lookup tables of any non-pointer type.

Repository:
  rL LLVM

https://reviews.llvm.org/D24462

Files:
  include/llvm/Analysis/TargetTransformInfo.h
  include/llvm/Analysis/TargetTransformInfoImpl.h
  lib/Analysis/TargetTransformInfo.cpp
  lib/Target/ARM/ARMTargetTransformInfo.h
  lib/Transforms/Utils/SimplifyCFG.cpp
  test/Transforms/SimplifyCFG/ARM/switch-to-lookup-table.ll

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