chore(3p/immer): Remove vendored copy of immer r/2029

We ended up dropping the use of this library again.

Change-Id: I2c44cd22a6128d23f87a582402bf5fb84991d608
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2292
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>

1 files changed, 0 insertions, 146 deletions

diff --git a/third_party/immer/benchmark/extra/refcounting.cpp b/third_party/immer/benchmark/extra/refcounting.cpp
deleted file mode 100644
index c7c5183e6264..000000000000
--- a/third_party/immer/benchmark/extra/refcounting.cpp
+++ /dev/null
@@ -1,146 +0,0 @@
-//
-// immer: immutable data structures for C++
-// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
-//
-// This software is distributed under the Boost Software License, Version 1.0.
-// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
-//
-
-#include <immer/detail/ref_count_base.hpp>
-
-#include <nonius.h++>
-#include <boost/intrusive_ptr.hpp>
-
-#include <atomic>
-#include <cstdlib>
-#include <iterator>
-#include <memory>
-#include <utility>
-#include <array>
-#include <vector>
-
-NONIUS_PARAM(N, std::size_t{1000})
-
-constexpr auto benchmark_size = 32u;
-
-struct object_t : immer::detail::ref_count_base<object_t>
-{};
-
-auto make_data()
-{
-    auto objs = std::array<std::unique_ptr<object_t>, benchmark_size>();
-    std::generate(objs.begin(), objs.end(), [] {
-        return std::make_unique<object_t>();
-    });
-    auto refs = std::array<object_t*, benchmark_size>();
-    std::transform(objs.begin(), objs.end(), refs.begin(), [](auto& obj) {
-        return obj.get();
-    });
-    return make_pair(std::move(objs),
-                     std::move(refs));
-}
-
-NONIUS_BENCHMARK("intrusive_ptr", [] (nonius::chronometer meter)
-{
-    auto arr     = std::array<boost::intrusive_ptr<object_t>, benchmark_size>{};
-    auto storage = std::vector<
-        nonius::storage_for<
-            std::array<boost::intrusive_ptr<object_t>, benchmark_size>>> (
-                meter.runs());
-    std::generate(arr.begin(), arr.end(), [] {
-        return new object_t{};
-    });
-    meter.measure([&] (int i) {
-        storage[i].construct(arr);
-    });
-})
-
-NONIUS_BENCHMARK("generic", [] (nonius::chronometer meter)
-{
-    auto data = make_data();
-    auto& refs = data.second;
-    object_t* r[benchmark_size];
-
-    meter.measure([&] {
-        std::transform(refs.begin(), refs.end(), r, [] (auto& p) {
-            if (p) p->ref_count.fetch_add(1, std::memory_order_relaxed);
-            return p;
-        });
-        return r;
-    });
-})
-
-NONIUS_BENCHMARK("manual", [] (nonius::chronometer meter)
-{
-    auto data = make_data();
-    auto& refs = data.second;
-    object_t* r[benchmark_size];
-
-    meter.measure([&] {
-        for (auto& p : refs)
-            if (p) p->ref_count.fetch_add(1, std::memory_order_relaxed);
-        std::copy(refs.begin(), refs.end(), r);
-        return r;
-    });
-})
-
-NONIUS_BENCHMARK("manual - unroll", [] (nonius::chronometer meter)
-{
-    auto data = make_data();
-    auto& refs = data.second;
-    object_t* r[benchmark_size];
-
-    meter.measure([&] {
-        auto e = refs.end();
-        for (auto p = refs.begin(); p != e;) {
-            (*p++)->ref_count.fetch_add(1, std::memory_order_relaxed);
-            (*p++)->ref_count.fetch_add(1, std::memory_order_relaxed);
-            (*p++)->ref_count.fetch_add(1, std::memory_order_relaxed);
-            (*p++)->ref_count.fetch_add(1, std::memory_order_relaxed);
-        }
-        std::copy(refs.begin(), refs.end(), r);
-        return r;
-    });
-})
-
-NONIUS_BENCHMARK("manual - nocheck", [] (nonius::chronometer meter)
-{
-    auto data = make_data();
-    auto& refs = data.second;
-    object_t* r[benchmark_size];
-
-    meter.measure([&] {
-        for (auto& p : refs)
-            p->ref_count.fetch_add(1, std::memory_order_relaxed);
-        std::copy(refs.begin(), refs.end(), r);
-        return r;
-    });
-})
-
-NONIUS_BENCHMARK("manual - constant", [] (nonius::chronometer meter)
-{
-    auto data = make_data();
-    auto& refs = data.second;
-    object_t* r[benchmark_size];
-
-    meter.measure([&] {
-        for (auto i = 0u; i < benchmark_size; ++i)
-            refs[i]->ref_count.fetch_add(1, std::memory_order_relaxed);
-        std::copy(refs.begin(), refs.end(), r);
-        return r;
-    });
-})
-
-NONIUS_BENCHMARK("manual - memcopy", [] (nonius::chronometer meter)
-{
-    auto data = make_data();
-    auto& refs = data.second;
-    object_t* r[benchmark_size];
-
-    meter.measure([&] {
-        for (auto& p : refs)
-            if (p) p->ref_count.fetch_add(1, std::memory_order_relaxed);
-        std::memcpy(r, &refs[0], sizeof(object_t*) * benchmark_size);
-        return r;
-    });
-})