Common: Add header for compiler-specifics

Instead of globbing things under an ambiguous Common.h header, move
compiler-specifics over to Compiler.h. This gives us a dedicated home
for anything related to compilers that we want to make functional across
all compilers that we support.

This moves us a little closer to eliminating Common.h entirely.

Source/Core/Common/BitField.h

@@ -35,7 +35,7 @@
 #include <limits>
 #include <type_traits>
 
-#include "Common.h"
+#include "Common/Compiler.h"
 
 /*
  * Abstract bitfield class

Source/Core/Common/ChunkFile.h

@@ -26,8 +26,8 @@
 #include <vector>
 
 #include "Common/Assert.h"
-#include "Common/Common.h"
 #include "Common/CommonTypes.h"
+#include "Common/Compiler.h"
 #include "Common/File.h"
 #include "Common/FileUtil.h"
 #include "Common/Flag.h"

Source/Core/Common/Common.h

@@ -4,14 +4,6 @@
 
 #pragma once
 
-#if defined(__GNUC__) || __clang__
-// Disable "unused function" warnings for the ones manually marked as such.
-#define UNUSED __attribute__((unused))
-#else
-// Not sure MSVC even checks this...
-#define UNUSED
-#endif
-
 #if defined _WIN32
 
 // Memory leak checks
@@ -42,8 +34,6 @@ struct CrtDebugBreak
 #ifndef _WIN32
 #include <limits.h>
 #define MAX_PATH PATH_MAX
-
-#define __forceinline inline __attribute__((always_inline))
 #endif
 
 #ifdef _MSC_VER

Source/Core/Common/Common.vcxproj

@@ -54,6 +54,7 @@
     <ClInclude Include="CommonFuncs.h" />
     <ClInclude Include="CommonPaths.h" />
     <ClInclude Include="CommonTypes.h" />
+    <ClInclude Include="Compiler.h" />
     <ClInclude Include="Config\Config.h" />
     <ClInclude Include="Config\ConfigInfo.h" />
     <ClInclude Include="Config\Enums.h" />

Source/Core/Common/Common.vcxproj.filters

@@ -37,6 +37,7 @@
     <ClInclude Include="CommonFuncs.h" />
     <ClInclude Include="CommonPaths.h" />
     <ClInclude Include="CommonTypes.h" />
+    <ClInclude Include="Compiler.h" />
     <ClInclude Include="Config\Config.h" />
     <ClInclude Include="Config\Enums.h" />
     <ClInclude Include="Config\Layer.h" />

Source/Core/Common/Compiler.h

@@ -0,0 +1,17 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#if defined(__GNUC__) || __clang__
+// Disable "unused function" warnings for the ones manually marked as such.
+#define UNUSED __attribute__((unused))
+#else
+// Not sure MSVC even checks this...
+#define UNUSED
+#endif
+
+#ifndef _WIN32
+#define __forceinline inline __attribute__((always_inline))
+#endif

Source/Core/Common/Crypto/ec.cpp

@@ -7,12 +7,9 @@
 // http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
 
 #include <algorithm>
-#include <cstdio>
-#include <cstdlib>
-#include <ctime>
-#include <string.h>
+#include <cstring>
 
-#include "Common/Common.h"
+#include "Common/Compiler.h"
 #include "Common/Crypto/bn.h"
 #include "Common/Crypto/ec.h"
 #include "Common/Random.h"

Source/Core/Core/HW/WiimoteEmu/Attachment/Attachment.cpp

@@ -8,8 +8,8 @@
 #include <array>
 #include <cstring>
 
-#include "Common/Common.h"
 #include "Common/CommonTypes.h"
+#include "Common/Compiler.h"
 #include "Core/HW/WiimoteEmu/WiimoteEmu.h"
 #include "InputCommon/ControllerEmu/ControlGroup/Extension.h"
 

Source/Core/VideoCommon/BPMemory.h

@@ -9,6 +9,7 @@
 
 #include "Common/BitField.h"
 #include "Common/CommonTypes.h"
+#include "Common/Compiler.h"
 
 enum class EFBCopyFormat;
 

Source/Core/VideoCommon/DataReader.h

@@ -6,8 +6,8 @@
 
 #include <cstring>
 
-#include "Common/Common.h"
 #include "Common/CommonTypes.h"
+#include "Common/Compiler.h"
 #include "Common/Swap.h"
 
 class DataReader

Source/Core/VideoCommon/IndexGenerator.cpp

@@ -4,8 +4,8 @@
 
 #include <cstddef>
 
-#include "Common/Common.h"
 #include "Common/CommonTypes.h"
+#include "Common/Compiler.h"
 #include "Common/Logging/Log.h"
 #include "VideoCommon/IndexGenerator.h"
 #include "VideoCommon/OpcodeDecoding.h"

Source/Core/VideoCommon/VertexLoaderUtils.h

@@ -6,8 +6,8 @@
 
 #include <cstring>
 
-#include "Common/Common.h"
 #include "Common/CommonTypes.h"
+#include "Common/Compiler.h"
 
 extern u8* g_video_buffer_read_ptr;
 extern u8* g_vertex_manager_write_ptr;

Source/Core/VideoCommon/VertexLoader_Normal.cpp

@@ -7,8 +7,8 @@
 #include <cmath>
 #include <type_traits>
 
-#include "Common/Common.h"
 #include "Common/CommonTypes.h"
+#include "Common/Compiler.h"
 
 #include "VideoCommon/DataReader.h"
 #include "VideoCommon/VertexLoader.h"