Summary:
The instantiation of the drop_begin function template usually fails because the functions begin() and end() do not exist. Only when using on a container from the std namespace (or `llvm::iterator_range`s of something derived from `std::iterator`), they are matched to std::begin() and std::end() due to Koenig-lookup.
Explicitly use llvm::adl_begin and llvm::adl_end to make drop_begin applicable to anything iterable (including C-style arrays).
A solution for general `llvm::iterator_range`s was already tried in r244620, but got reverted in r244621 due to MSVC not liking it.
Reviewers: dblaikie, grosbach, aaron.ballman, ruiu
Reviewed By: dblaikie, aaron.ballman
Subscribers: aaron.ballman, llvm-commits
Differential Revision: https://reviews.llvm.org/D48598
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335772 91177308-0d34-0410-b5e6-96231b3b80d8
This commit adds a wrapper for std::distance() which works with ranges.
As it would be a common case to write `distance(predecessors(BB))`, this
also introduces `pred_size()` and `succ_size()` helpers to make that
easier to write.
Differential Revision: https://reviews.llvm.org/D46668
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332057 91177308-0d34-0410-b5e6-96231b3b80d8
This makes it possible to reverse a filtered range. For example, here's
a way to visit memory accesses in a BasicBlock in reverse order:
auto MemInsts = reverse(make_filter_range(BB, [](Instruction &I) {
return isa<StoreInst>(&I) || isa<LoadInst>(&I);
}));
for (auto &MI : MemInsts)
...
To implement this functionality, I factored out forward iteration
functionality into filter_iterator_base, and added a specialization of
filter_iterator_impl which supports bidirectional iteration. Thanks to
Tim Shen, Zachary Turner, and others for suggesting this design and
providing feedback! This version of the patch supersedes the original
(https://reviews.llvm.org/D45792).
This was motivated by a problem we encountered in D45657: we'd like to
visit the non-debug-info instructions in a BasicBlock in reverse order.
Testing: check-llvm, check-clang
Differential Revision: https://reviews.llvm.org/D45853
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330875 91177308-0d34-0410-b5e6-96231b3b80d8
clang-format (https://reviews.llvm.org/D33932) to keep primary headers
at the top and handle new utility headers like 'gmock' consistently with
other utility headers.
No other change was made. I did no manual edits, all of this is
clang-format.
This should allow other changes to have more clear and focused diffs,
and is especially motivated by moving some headers into more focused
libraries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304786 91177308-0d34-0410-b5e6-96231b3b80d8
This commit provides `zip_{first,shortest}` with the standard member types and
methods expected of iterators (e.g., `difference_type`), in order for zip to be
used with other adaptors, such as `make_filter_range`.
Support for reverse iteration has also been added.
Differential Revision: https://reviews.llvm.org/D30246
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296036 91177308-0d34-0410-b5e6-96231b3b80d8
This augments the STLExtras toolset with a zip iterator and range
adapter. Zip comes in two varieties: `zip`, which will zip to the
shortest of the input ranges, and `zip_first`, which limits its
`begin() == end()` checks to just the first range.
Recommit r284035 after MSVC2013 support has been dropped.
Patch by: Bryant Wong <github.com/bryant>
Differential Revision: https://reviews.llvm.org/D23252
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284623 91177308-0d34-0410-b5e6-96231b3b80d8
This augments the STLExtras toolset with a zip iterator and range
adapter. Zip comes in two varieties: `zip`, which will zip to the
shortest of the input ranges, and `zip_first`, which limits its
`begin() == end()` checks to just the first krange.
Patch by: Bryant Wong <github.com/bryant>
Differential Revision: https://reviews.llvm.org/D23252
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284035 91177308-0d34-0410-b5e6-96231b3b80d8
