diff options
| author | Patrick Palka <ppalka@redhat.com> | 2020-09-28 11:54:57 -0400 |
|---|---|---|
| committer | Patrick Palka <ppalka@redhat.com> | 2020-09-28 11:54:57 -0400 |
| commit | 623443357e6092067b4cf98cc6c0aeff7560b98d (patch) | |
| tree | 87bf249f1bee788fc5993a409e6807e31c266004 | |
| parent | e189d5c931c5d94fd7487a2d1df9454d0b124eeb (diff) | |
| download | gcc-623443357e6092067b4cf98cc6c0aeff7560b98d.zip gcc-623443357e6092067b4cf98cc6c0aeff7560b98d.tar.gz gcc-623443357e6092067b4cf98cc6c0aeff7560b98d.tar.bz2 | |
libstdc++: Reduce the size of an unbounded iota_view
libstdc++-v3/ChangeLog:
* include/std/ranges (iota_view::_M_bound): Give it
[[no_unique_address]].
* testsuite/std/ranges/iota/iota_view.cc: Check that an
unbounded iota_view has minimal size.
| -rw-r--r-- | libstdc++-v3/include/std/ranges | 2 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/std/ranges/iota/iota_view.cc | 3 |
2 files changed, 4 insertions, 1 deletions
diff --git a/libstdc++-v3/include/std/ranges b/libstdc++-v3/include/std/ranges index ed04fa0..964a2b6 100644 --- a/libstdc++-v3/include/std/ranges +++ b/libstdc++-v3/include/std/ranges @@ -511,7 +511,7 @@ namespace ranges }; _Winc _M_value = _Winc(); - _Bound _M_bound = _Bound(); + [[no_unique_address]] _Bound _M_bound = _Bound(); public: iota_view() = default; diff --git a/libstdc++-v3/testsuite/std/ranges/iota/iota_view.cc b/libstdc++-v3/testsuite/std/ranges/iota/iota_view.cc index 65d166f..8a33e10 100644 --- a/libstdc++-v3/testsuite/std/ranges/iota/iota_view.cc +++ b/libstdc++-v3/testsuite/std/ranges/iota/iota_view.cc @@ -77,6 +77,9 @@ test04() VERIFY( it == v.end() ); } +// Verify we optimize away the 'bound' data member of an unbounded iota_view. +static_assert(sizeof(std::ranges::iota_view<char>) == 1); + int main() { |