Eric Christopher c40e5edbbc Add a new subtarget hook for whether or not we'd like to enable ...

the atomic load linked expander pass to run for a particular
subtarget. This requires a check of the subtarget and so save
the TargetMachine rather than only TargetLoweringInfo and update
all callers.

llvm-svn: 211314

2014-06-19 21:03:04 +00:00

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