From 619d5691c20bee5d08be2ce85aafa2cb570dbca4 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Fri, 27 May 2016 13:30:08 +0200
Subject: [PATCH] Benchmark SipHash

---
 src/bench/crypto_hash.cpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/bench/crypto_hash.cpp b/src/bench/crypto_hash.cpp
index 6b753f6308..168006154f 100644
--- a/src/bench/crypto_hash.cpp
+++ b/src/bench/crypto_hash.cpp
@@ -6,6 +6,8 @@
 
 #include "bench.h"
 #include "bloom.h"
+#include "hash.h"
+#include "uint256.h"
 #include "utiltime.h"
 #include "crypto/ripemd160.h"
 #include "crypto/sha1.h"
@@ -39,6 +41,16 @@ static void SHA256(benchmark::State& state)
         CSHA256().Write(begin_ptr(in), in.size()).Finalize(hash);
 }
 
+static void SHA256_32b(benchmark::State& state)
+{
+    std::vector<uint8_t> in(32,0);
+    while (state.KeepRunning()) {
+        for (int i = 0; i < 1000000; i++) {
+            CSHA256().Write(begin_ptr(in), in.size()).Finalize(&in[0]);
+        }
+    }
+}
+
 static void SHA512(benchmark::State& state)
 {
     uint8_t hash[CSHA512::OUTPUT_SIZE];
@@ -47,7 +59,20 @@ static void SHA512(benchmark::State& state)
         CSHA512().Write(begin_ptr(in), in.size()).Finalize(hash);
 }
 
+static void SipHash_32b(benchmark::State& state)
+{
+    uint256 x;
+    while (state.KeepRunning()) {
+        for (int i = 0; i < 1000000; i++) {
+            *((uint64_t*)x.begin()) = SipHashUint256(0, i, x);
+        }
+    }
+}
+
 BENCHMARK(RIPEMD160);
 BENCHMARK(SHA1);
 BENCHMARK(SHA256);
 BENCHMARK(SHA512);
+
+BENCHMARK(SHA256_32b);
+BENCHMARK(SipHash_32b);