1 files changed, 62 insertions, 0 deletions
diff --git a/libc/benchmarks/gpu/src/math/logf16_benchmark.cpp b/libc/benchmarks/gpu/src/math/logf16_benchmark.cpp
new file mode 100644
index 000000000000..9748e15c4640
--- /dev/null
+++ b/libc/benchmarks/gpu/src/math/logf16_benchmark.cpp
@@ -0,0 +1,62 @@
+//===-- GPU benchmark for logf16 ------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "benchmarks/gpu/LibcGpuBenchmark.h"
+#include "benchmarks/gpu/Random.h"
+
+#include "hdr/stdint_proxy.h"
+#include "src/__support/macros/properties/types.h"
+#include "src/__support/sign.h"
+#include "src/math/logf16.h"
+
+#if defined(NVPTX_MATH_FOUND) || defined(AMDGPU_MATH_FOUND)
+#include "platform.h"
+#endif
+
+#define RANDOM_INPUT_UniformExponent(T, Func, Min, Max, N)                     \
+  [](uint32_t call_index) {                                                    \
+    using namespace LIBC_NAMESPACE::benchmarks;                                \
+                                                                               \
+    const UniformExponent<T> dist(Min, Max, LIBC_NAMESPACE::Sign::POS);        \
+    return MathPerf<T>::template run_throughput<N>(Func, dist, call_index);    \
+  }
+
+#define RANDOM_INPUT_UniformLinear(T, Func, Min, Max, N)                       \
+  [](uint32_t call_index) {                                                    \
+    using namespace LIBC_NAMESPACE::benchmarks;                                \
+                                                                               \
+    const UniformLinear<T> dist(Min, Max);                                     \
+    return MathPerf<T>::template run_throughput<N>(Func, dist, call_index);    \
+  }
+
+#define BENCH(T, Name, Func, Dist, Min, Max)                                   \
+  SINGLE_WAVE_BENCHMARK(LlvmLibcLogf16GpuBenchmark, Name##_1,                  \
+                        RANDOM_INPUT_##Dist(T, Func, Min, Max, 1));            \
+  SINGLE_WAVE_BENCHMARK(LlvmLibcLogf16GpuBenchmark, Name##_128,                \
+                        RANDOM_INPUT_##Dist(T, Func, Min, Max, 128));          \
+  SINGLE_WAVE_BENCHMARK(LlvmLibcLogf16GpuBenchmark, Name##_1024,               \
+                        RANDOM_INPUT_##Dist(T, Func, Min, Max, 1024));         \
+  SINGLE_WAVE_BENCHMARK(LlvmLibcLogf16GpuBenchmark, Name##_4096,               \
+                        RANDOM_INPUT_##Dist(T, Func, Min, Max, 4096))
+
+using LIBC_NAMESPACE::logf16;
+
+static constexpr float16 INV_E = 0x1.78b56362cef38p-2f16; // exp(-1.0)
+static constexpr float16 E = 0x1.5bf0a8b145769p+1f16;     // exp(+1.0)
+
+BENCH(float16, Logf16Subnormal, logf16, UniformExponent, -14, -14);
+BENCH(float16, Logf16AroundOne, logf16, UniformLinear, INV_E, E);
+BENCH(float16, Logf16MedMag, logf16, UniformExponent, -10, 10);
+BENCH(float16, Logf16Normal, logf16, UniformExponent, -13, 15);
+
+#ifdef AMDGPU_MATH_FOUND
+BENCH(float16, AmdLogf16Subnormal, __ocml_log_f16, UniformExponent, -14, -14);
+BENCH(float16, AmdLogf16AroundOne, __ocml_log_f16, UniformLinear, INV_E, E);
+BENCH(float16, AmdLogf16MedMag, __ocml_log_f16, UniformExponent, -10, 10);
+BENCH(float16, AmdLogf16Normal, __ocml_log_f16, UniformExponent, -13, 15);
+#endif