Add new benchmark cases for hashing string lengths 1,2,4,8.

PiperOrigin-RevId: 713766309
Change-Id: Ibfb26617633d56ddc3765991f5750a2b2a6a3cd1

absl/hash/hash_benchmark.cc

diff --git a/absl/hash/hash_benchmark.cc b/absl/hash/hash_benchmark.cc
index 9b73f46..f345530 100644
--- a/absl/hash/hash_benchmark.cc
+++ b/absl/hash/hash_benchmark.cc
@@ -171,6 +171,10 @@
 MAKE_BENCHMARK(AbslHash, TupleInt32BoolInt64,
                std::tuple<int32_t, bool, int64_t>{});
 MAKE_BENCHMARK(AbslHash, String_0, std::string());
+MAKE_BENCHMARK(AbslHash, String_1, std::string(1, 'a'));
+MAKE_BENCHMARK(AbslHash, String_2, std::string(2, 'a'));
+MAKE_BENCHMARK(AbslHash, String_4, std::string(4, 'a'));
+MAKE_BENCHMARK(AbslHash, String_8, std::string(8, 'a'));
 MAKE_BENCHMARK(AbslHash, String_10, std::string(10, 'a'));
 MAKE_BENCHMARK(AbslHash, String_30, std::string(30, 'a'));
 MAKE_BENCHMARK(AbslHash, String_90, std::string(90, 'a'));