[LICM] Allow sinking when foldable in loop
Summary:
Continue trying to sink an instruction if its users in the loop is foldable.
This will allow the instruction to be folded in the loop by decoupling it from
the user outside of the loop.
Reviewers: hfinkel, majnemer, davidxl, efriedma, danielcdh, bmakam, mcrosier
Reviewed By: hfinkel
Subscribers: javed.absar, bmakam, mcrosier, llvm-commits
Differential Revision: https://reviews.llvm.org/D37076
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320823
91177308-0d34-0410-b5e6-
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