benchmark-1.7.1-e2k.patch

From 0a1d917e47dbd5a943049eb8fa0f4fc6c516c318 Mon Sep 17 00:00:00 2001
From: Ilya Kurdyukov <jpegqs@gmail.com>
Date: Wed, 3 May 2023 15:17:10 +0700
Subject: [PATCH] benchmark-1.7.1 e2k support

---
 include/benchmark/benchmark.h | 11 ++++++++++-
 src/cycleclock.h              |  6 ++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/include/benchmark/benchmark.h b/include/benchmark/benchmark.h
index fefe9b2..455c320 100644
--- a/include/benchmark/benchmark.h
+++ b/include/benchmark/benchmark.h
@@ -439,7 +439,16 @@ inline BENCHMARK_ALWAYS_INLINE void ClobberMemory() {
 // intended to add little to no overhead.
 // See: https://youtu.be/nXaxk27zwlk?t=2441
 #ifndef BENCHMARK_HAS_NO_INLINE_ASSEMBLY
-#if !defined(__GNUC__) || defined(__llvm__) || defined(__INTEL_COMPILER)
+#if defined(__e2k__) && defined(__EDG__)
+template <class Tp>
+inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp const& value) {
+  asm volatile("" : : "r"(&reinterpret_cast<char const volatile&>(value)) : "memory");
+}
+template <class Tp>
+inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp& value) {
+  asm volatile("" : : "r"(&reinterpret_cast<char volatile&>(value)) : "memory");
+}
+#elif !defined(__GNUC__) || defined(__llvm__) || defined(__INTEL_COMPILER)
 template <class Tp>
 inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp const& value) {
   asm volatile("" : : "r,m"(value) : "memory");
diff --git a/src/cycleclock.h b/src/cycleclock.h
index df6ffa5..f64e00e 100644
--- a/src/cycleclock.h
+++ b/src/cycleclock.h
@@ -41,6 +41,10 @@ extern "C" uint64_t __rdtsc();
 #pragma intrinsic(__rdtsc)
 #endif
 
+#ifdef __e2k__
+#include <x86intrin.h>
+#endif
+
 #if !defined(BENCHMARK_OS_WINDOWS) || defined(BENCHMARK_OS_MINGW)
 #include <sys/time.h>
 #include <time.h>
@@ -122,6 +126,8 @@ inline BENCHMARK_ALWAYS_INLINE int64_t Now() {
   return virtual_timer_value;
 #elif defined(COMPILER_MSVC)
   return __rdtsc();
+#elif defined(__e2k__)
+  return __rdtsc();
 #elif defined(BENCHMARK_OS_NACL)
   // Native Client validator on x86/x86-64 allows RDTSC instructions,
   // and this case is handled above. Native Client validator on ARM
-- 
2.34.1