[PATCH] D25847: [ValueTracking] Don't assume we can speculate shifts

Michael Kuperstein via llvm-commits llvm-commits at lists.llvm.org
Thu Oct 20 15:59:31 PDT 2016

mkuper created this revision.
mkuper added reviewers: davide, hfinkel, majnemer.
mkuper added a subscriber: llvm-commits.

Shifts are only isSafeToSpeculativelyExecute if we know the amount we're shifting by is smaller than the bitwidth of the shifted value.

This fixes PR30708



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