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Summary: Because LSR happens at a late stage where mul of a power of 2 is typically canonicalized to shl, this canonicalization emits code that can be better CSE'ed. Test Plan: Transforms/LoopStrengthReduce/shl.ll shows how this change makes GVN more powerful. Fixes some existing tests due to this change. Reviewers: sanjoy, majnemer, atrick Reviewed By: majnemer, atrick Subscribers: majnemer, llvm-commits Differential Revision: http://reviews.llvm.org/D10448 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240573 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
AMDGPU | ||
X86 | ||
basic-address-space.ll | ||
basic.ll | ||
crash.ll | ||
debug-line.ll | ||
memset_noidiom.ll | ||
non-canonical-loop.ll | ||
scev-invalidation.ll |