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SDL_endian.h: remove aarch64 asm. 

The asm has been reported broken in at least optimized Apple M1 builds;
and besides, the compiler builtins have precedence over the asm anyway.

Closes https://github.com/libsdl-org/SDL/issues/3943
This commit is contained in:
Ozkan Sezer 2021-11-25 17:00:50 +03:00
parent 53aa8eec5f
commit eb39e20588
1 changed files with 0 additions and 14 deletions
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14
include/SDL_endian.h
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@ -135,13 +135,6 @@ SDL_Swap16(Uint16 x)
__asm__("rlwimi %0,%2,8,16,23": "=&r"(result):"0"(x >> 8), "r"(x)); __asm__("rlwimi %0,%2,8,16,23": "=&r"(result):"0"(x >> 8), "r"(x));
return (Uint16)result; return (Uint16)result;
} }
#elif defined(__aarch64__)
SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x)
{
__asm__("rev16 %w1, %w0" : "=r"(x) : "r"(x));
return x;
}
#elif (defined(__m68k__) && !defined(__mcoldfire__)) #elif (defined(__m68k__) && !defined(__mcoldfire__))
SDL_FORCE_INLINE Uint16 SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x) SDL_Swap16(Uint16 x)
@ -193,13 +186,6 @@ SDL_Swap32(Uint32 x)
__asm__("rlwimi %0,%2,24,0,7" : "=&r"(result): "0" (result), "r"(x)); __asm__("rlwimi %0,%2,24,0,7" : "=&r"(result): "0" (result), "r"(x));
return result; return result;
} }
#elif defined(__aarch64__)
SDL_FORCE_INLINE Uint32
SDL_Swap32(Uint32 x)
{
__asm__("rev %w1, %w0": "=r"(x):"r"(x));
return x;
}
#elif (defined(__m68k__) && !defined(__mcoldfire__)) #elif (defined(__m68k__) && !defined(__mcoldfire__))
SDL_FORCE_INLINE Uint32 SDL_FORCE_INLINE Uint32
SDL_Swap32(Uint32 x) SDL_Swap32(Uint32 x)