Removed SDL_CPUINFO_DISABLED

CPU info is a core part of the SDL API, and shouldn't be disabled

CMakeLists.txt

@@ -211,7 +211,6 @@ if(EMSCRIPTEN)
   set(SDL_ASSEMBLY_DEFAULT OFF)
   set(SDL_SHARED_AVAILABLE OFF)
   set(SDL_ATOMIC_DEFAULT OFF)
-  set(SDL_CPUINFO_DEFAULT OFF)
 endif()
 
 if(VITA OR PSP OR PS2 OR N3DS OR RISCOS)
@@ -250,7 +249,6 @@ set(SDL_SUBSYSTEMS
   Threads
   Timers
   File
-  CPUinfo
   Filesystem
   Sensor
   Locale

include/build_config/SDL_build_config.h.cmake

@@ -258,7 +258,6 @@
 /* Allow disabling of core subsystems */
 #cmakedefine SDL_ATOMIC_DISABLED @SDL_ATOMIC_DISABLED@
 #cmakedefine SDL_AUDIO_DISABLED @SDL_AUDIO_DISABLED@
-#cmakedefine SDL_CPUINFO_DISABLED @SDL_CPUINFO_DISABLED@
 #cmakedefine SDL_FILE_DISABLED @SDL_FILE_DISABLED@
 #cmakedefine SDL_JOYSTICK_DISABLED @SDL_JOYSTICK_DISABLED@
 #cmakedefine SDL_HAPTIC_DISABLED @SDL_HAPTIC_DISABLED@

include/build_config/SDL_build_config_emscripten.h

@@ -156,7 +156,6 @@
 /* SDL internal assertion support */
 /* #undef SDL_DEFAULT_ASSERT_LEVEL */
 
-#define SDL_CPUINFO_DISABLED 1
 #define SDL_HAPTIC_DISABLED 1
 #define SDL_HIDAPI_DISABLED 1
 #ifndef __EMSCRIPTEN_PTHREADS__

src/audio/SDL_audiotypecvt.c

@@ -25,7 +25,7 @@
 // TODO: NEON is disabled until https://github.com/libsdl-org/SDL/issues/8352 can be fixed
 #undef SDL_NEON_INTRINSICS
 
-#ifndef SDL_CPUINFO_DISABLED
+#ifndef __EMSCRIPTEN__
 #if defined(__x86_64__) && defined(SDL_SSE2_INTRINSICS)
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 // x86_64 guarantees SSE2.
 #elif defined(__MACOS__) && defined(SDL_SSE2_INTRINSICS)
@@ -35,10 +35,10 @@
 #elif defined(__APPLE__) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7) && defined(SDL_NEON_INTRINSICS)
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 // All Apple ARMv7 chips promise NEON support.
 #endif
-#endif
+#endif /* __EMSCRIPTEN__ */
 
 // Set to zero if platform is guaranteed to use a SIMD codepath here.
-#if !defined(NEED_SCALAR_CONVERTER_FALLBACKS) || defined(SDL_CPUINFO_DISABLED)
+#if !defined(NEED_SCALAR_CONVERTER_FALLBACKS)
 #define NEED_SCALAR_CONVERTER_FALLBACKS 1
 #endif
 

src/cpuinfo/SDL_cpuinfo.c

@@ -122,7 +122,7 @@ static int CPU_haveCPUID(void)
     int has_CPUID = 0;
 
 /* *INDENT-OFF* */ /* clang-format off */
-#ifndef SDL_CPUINFO_DISABLED
+#ifndef __EMSCRIPTEN__
 #if (defined(__GNUC__) || defined(__llvm__)) && defined(__i386__)
     __asm__ (
 "        pushfl                      # Get original EFLAGS             \n"
@@ -209,7 +209,7 @@ done:
 "1:                            \n"
     );
 #endif
-#endif
+#endif /* !__EMSCRIPTEN__ */
 /* *INDENT-ON* */ /* clang-format on */
     return has_CPUID;
 }
@@ -439,9 +439,7 @@ static int CPU_haveNEON(void)
 {
 /* The way you detect NEON is a privileged instruction on ARM, so you have
    query the OS kernel in a platform-specific way. :/ */
-#ifdef SDL_CPUINFO_DISABLED
-    return 0; /* disabled */
-#elif (defined(__WINDOWS__) || defined(__WINRT__) || defined(__GDK__)) && (defined(_M_ARM) || defined(_M_ARM64))
+#if (defined(__WINDOWS__) || defined(__WINRT__) || defined(__GDK__)) && (defined(_M_ARM) || defined(_M_ARM64))
 /* Visual Studio, for ARM, doesn't define __ARM_ARCH. Handle this first. */
 /* Seems to have been removed */
 #ifndef PF_ARM_NEON_INSTRUCTIONS_AVAILABLE
@@ -498,6 +496,8 @@ static int CPU_haveNEON(void)
         }
         return 0;
     }
+#elif defined(__EMSCRIPTEN__)
+    return 0;
 #else
 #warning SDL_HasNEON is not implemented for this ARM platform. Write me.
     return 0;
@@ -618,7 +618,6 @@ static int SDL_CPUCount = 0;
 int SDL_GetCPUCount(void)
 {
     if (!SDL_CPUCount) {
-#ifndef SDL_CPUINFO_DISABLED
 #if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
         if (SDL_CPUCount <= 0) {
             SDL_CPUCount = (int)sysconf(_SC_NPROCESSORS_ONLN);
@@ -636,7 +635,6 @@ int SDL_GetCPUCount(void)
             GetSystemInfo(&info);
             SDL_CPUCount = info.dwNumberOfProcessors;
         }
-#endif
 #endif
         /* There has to be at least 1, right? :) */
         if (SDL_CPUCount <= 0) {
@@ -1003,7 +1001,6 @@ static int SDL_SystemRAM = 0;
 int SDL_GetSystemRAM(void)
 {
     if (!SDL_SystemRAM) {
-#ifndef SDL_CPUINFO_DISABLED
 #if defined(HAVE_SYSCONF) && defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
         if (SDL_SystemRAM <= 0) {
             SDL_SystemRAM = (int)((Sint64)sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE) / (1024 * 1024));
@@ -1072,7 +1069,6 @@ int SDL_GetSystemRAM(void)
                 SDL_SystemRAM = (int)SDL_round((info.max_pages + info.ignored_pages > 0 ? info.ignored_pages : 0) * B_PAGE_SIZE / 1048576.0);
             }
         }
-#endif
 #endif
     }
     return SDL_SystemRAM;