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301d3d04f0
The code already folds sign-/zero-extends, but only if they are arguments to mul and shift instructions. This extends the code to also fold them when they are direct inputs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219187 91177308-0d34-0410-b5e6-96231b3b80d8
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