From fef58dc2f2037da75cf48212bfc0020bef20e585 Mon Sep 17 00:00:00 2001
From: kimwalisch <kim.walisch@gmail.com>
Date: Thu, 4 Apr 2024 16:58:04 +0200
Subject: [PATCH] Add CPUID test

---
 test/CPUID.cpp | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 test/CPUID.cpp

diff --git a/test/CPUID.cpp b/test/CPUID.cpp
new file mode 100644
index 000000000..2d251eb33
--- /dev/null
+++ b/test/CPUID.cpp
@@ -0,0 +1,76 @@
+///
+/// @file   CPUID.cpp
+/// @brief  Test CPUID code on x86 and x64 CPUs.
+///
+/// Copyright (C) 2024 Kim Walisch, <kim.walisch@gmail.com>
+///
+/// This file is distributed under the BSD License. See the COPYING
+/// file in the top level directory.
+///
+
+#include <CPUID.hpp>
+#include <iostream>
+
+int main()
+{
+#if defined(__x86_64__) || \
+    defined(__i386__) || \
+    defined(_M_X64) || \
+    defined(_M_IX86)
+
+  #if defined(__POPCNT__)
+    #if defined(HAS_POPCNT)
+      std::cout << "OK: __POPCNT__ and HAS_POPCNT are defined!" << std::endl;
+    #else
+      std::cerr << "Error: HAS_POPCNT must be defined if __POPCNT__ is defined!" << std::endl;
+      return 1;
+    #endif
+  #endif
+
+  #if defined(__AVX__)
+    #if defined(HAS_POPCNT)
+      std::cout << "OK: __AVX__ and HAS_POPCNT are defined!" << std::endl;
+    #else
+      std::cerr << "Error: HAS_POPCNT must be defined if __AVX__ is defined!" << std::endl;
+      return 1;
+    #endif
+  #endif
+
+  #if defined(__AVX2__)
+    #if defined(HAS_POPCNT)
+      std::cout << "OK: __AVX2__ and HAS_POPCNT are defined!" << std::endl;
+    #else
+      std::cerr << "Error: HAS_POPCNT must be defined if __AVX2__ is defined!" << std::endl;
+      return 1;
+    #endif
+  #endif
+
+  #if defined(HAS_POPCNT)
+    #if !defined(ENABLE_CPUID_POPCNT)
+      std::cout << "OK: HAS_POPCNT is defined but ENABLE_CPUID_POPCNT is not defined!" << std::endl;
+    #else
+      std::cerr << "Error: ENABLE_CPUID_POPCNT must not be defined if HAS_POPCNT is defined!" << std::endl;
+      return 1;
+    #endif
+  #endif
+
+  #if !defined(HAS_POPCNT)
+    #if defined(ENABLE_CPUID_POPCNT)
+      std::cout << "OK: HAS_POPCNT is not defined but ENABLE_CPUID_POPCNT is defined!" << std::endl;
+    #else
+      std::cerr << "Error: ENABLE_CPUID_POPCNT must be defined if HAS_POPCNT is not defined!" << std::endl;
+      return 1;
+    #endif
+  #endif
+
+  #if defined(ENABLE_CPUID_POPCNT)
+    std::cout << "CPU supports POPCNT: " << (HAS_CPUID_POPCNT ? "yes" : "no") << std::endl;
+  #endif
+
+#endif
+
+  std::cout << std::endl;
+  std::cout << "All tests passed successfully!" << std::endl;
+
+  return 0;
+}