[PATCH] D145337: [ADT] Avoid needless iterator copies in `zippy`

Jakub Kuderski via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sun Mar 5 15:51:14 PST 2023


kuhar created this revision.
kuhar added reviewers: dblaikie, zero9178, kazu, Mogball, antiagainst, beanz, zturner, mehdi_amini.
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Make `zip_common` increment and decrement iterators in place.

This improves performance with iterator types that have non-triviall
copy constructors.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D145337

Files:
  llvm/include/llvm/ADT/STLExtras.h
  llvm/unittests/ADT/IteratorTest.cpp

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