random bench refactor: move to new bench/random.cpp

src/bench/random.cpp

@@ -0,0 +1,25 @@
+// Copyright (c) The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <bench/bench.h>
+#include <random.h>
+
+static void FastRandom_32bit(benchmark::Bench& bench)
+{
+    FastRandomContext rng(true);
+    bench.run([&] {
+        rng.rand32();
+    });
+}
+
+static void FastRandom_1bit(benchmark::Bench& bench)
+{
+    FastRandomContext rng(true);
+    bench.run([&] {
+        rng.randbool();
+    });
+}
+
+BENCHMARK(FastRandom_32bit, benchmark::PriorityLevel::HIGH);
+BENCHMARK(FastRandom_1bit, benchmark::PriorityLevel::HIGH);