Reapply "[LV] Improve AnyOf reduction codegen. (#78304)" This reverts the revert commit c6e01627acf859. This patch includes a fix for any-of reductions and epilogue vectorization. Extra test coverage for the issue that caused the revert has been added in bce3bfced5fe0b019 and an assertion has been added in c7209cbb8be7a3c65813. -------------------------------- Original commit message: Update AnyOf reduction code generation to only keep track of the AnyOf property in a boolean vector in the loop, only selecting either the new or start value in the middle block. The patch incorporates feedback from https://reviews.llvm.org/D153697. This fixes the #62565, as now there aren't multiple uses of the start/new values. Fixes https://github.com/llvm/llvm-project/issues/62565 PR: https://github.com/llvm/llvm-project/pull/78304
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