[PATCH] [LICM] Store sink and indirectbr instructions

[Bruno Cardoso Lopes]

Hi atrick, hfinkel,

Loop simplify skips exit-block insertion when exits contain indirectbr instructions. This
leads to an assertion in LICM when trying to sink stores out of non-dedicated loop exits
containing indirectbr instructions. This patch fix this issue by re-checking for dedicated
exits in LICM prior to store sink attempts.

http://reviews.llvm.org/D6414

Files:
  lib/Transforms/Scalar/LICM.cpp
  test/Transforms/LICM/sinking.ll
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