[LV] Record memory widening decisions (NFCI)
Record widening decisions for memory operations within the planned recipes and use the recorded decisions in code-gen rather than querying the cost model. Differential Revision: https://reviews.llvm.org/D110479
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- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp 17 additions, 26 deletionsllvm/lib/Transforms/Vectorize/LoopVectorize.cpp
- llvm/lib/Transforms/Vectorize/VPlan.h 22 additions, 4 deletionsllvm/lib/Transforms/Vectorize/VPlan.h
- llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp 3 additions, 3 deletionsllvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
- llvm/unittests/Transforms/Vectorize/VPlanTest.cpp 4 additions, 3 deletionsllvm/unittests/Transforms/Vectorize/VPlanTest.cpp
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