[libcxx-commits] [libcxx] [libc++] optimization on ranges::drop_view::begin (#72883) (PR #72929)
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libcxx-commits at lists.llvm.org
Tue Nov 21 11:49:26 PST 2023
================
@@ -90,6 +90,10 @@ namespace ranges {
requires (!(__simple_view<_View> &&
random_access_range<const _View> && sized_range<const _View>))
{
+ if constexpr (random_access_range<const _View> && sized_range<const _View>) {
+ auto __dist = ranges::distance(__base_);
+ return ranges::begin(__base_) + std::min<range_difference_t<_View>>(__count_, __dist);
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huixie90 wrote:
Btw, please double check if this file has undef the min/max macro on the top
https://github.com/llvm/llvm-project/pull/72929
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