417fe52e6f
This reverts commit 1387a13e1d0bac94457626ef3e7427c84caf6e65. This introduced performance regressions on AArch64, when the cost of a vector GEP + extracts is offset by the benefits of vectorizing the rest of the tree. The test in llvm/test/Transforms/SLPVectorizer/AArch64/vector-getelementptr.ll illustrates the issue. It was extracted from code that regressed a SPEC benchmark by 15%.