intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 45 insertions, 0 deletions

diff --git a/library/cpp/int128/bench/main.cpp b/library/cpp/int128/bench/main.cpp
new file mode 100644
index 0000000000..be4f8d1500
--- /dev/null
+++ b/library/cpp/int128/bench/main.cpp
@@ -0,0 +1,45 @@
+#include <library/cpp/int128/int128.h>
+#include <library/cpp/testing/benchmark/bench.h>
+
+#include <util/generic/xrange.h>
+#include <util/system/compiler.h>
+
+Y_CPU_BENCHMARK(LibraryDivisionUnsigned128, iface) {
+    ui128 b = {0, 10'000'000};
+    for (const auto i : xrange(iface.Iterations())) {
+        ui128 a = i * 10'000'000;
+        ui128 c = a / b;
+        Y_FAKE_READ(c);
+    }
+}
+
+#if defined(Y_HAVE_INT128)
+Y_CPU_BENCHMARK(IntrinsicDivisionUnsigned128, iface) {
+    unsigned __int128 b = 10'000'000;
+    for (const auto i : xrange(iface.Iterations())) {
+        unsigned __int128 a = i * 10'000'000;
+        unsigned __int128 c = a / b;
+        Y_FAKE_READ(c);
+    }
+}
+#endif // Y_HAVE_INT128
+
+Y_CPU_BENCHMARK(LibraryDivisionSigned128, iface) {
+    i128 b = {0, 10'000'000};
+    for (const auto i : xrange(iface.Iterations())) {
+        i128 a = i * 10'000'000;
+        i128 c = a / b;
+        Y_FAKE_READ(c);
+    }
+}
+
+#if defined(Y_HAVE_INT128)
+Y_CPU_BENCHMARK(IntrinsicDivisionSigned128, iface) {
+    signed __int128 b = 10'000'000;
+    for (const auto i : xrange(iface.Iterations())) {
+        signed __int128 a = i * 10'000'000;
+        signed __int128 c = a / b;
+        Y_FAKE_READ(c);
+    }
+}
+#endif // Y_HAVE_INT128