David Green b26a0a460c [IndVarSimplify] Add AShr exact flags using induction variables ranges. ...

This adds exact flags to AShr/LShr flags where we can statically
prove it is valid using the range of induction variables. This
allows further optimisations to remove extra loads.

Differential Revision: https://reviews.llvm.org/D34207

llvm-svn: 307157

2017-07-05 13:25:58 +00:00

25 KiB

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