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_alloca16(): Use __builtin_alloca_with_align() on GCC

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we're already using it with MinGW, no reason not to use it with
"normal" GCC on Unix (and clang, which also defines __GNUC__) as well.
This commit is contained in:
Daniel Gibson 2023-03-28 19:14:29 +02:00
parent 56b3c46ba8
commit 6f35ce045d
1 changed files with 7 additions and 2 deletions
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9
neo/sys/platform.h
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@ -185,8 +185,13 @@ If you have questions concerning this license or the applicable additional terms
// Unix
#ifdef __unix__
#define _alloca( x ) (({assert( (x)<ID_MAX_ALLOCA_SIZE );}), alloca( (x) ))
#define _alloca16( x ) (({assert( (x)<ID_MAX_ALLOCA_SIZE );}),((void *)((((uintptr_t)alloca( (x)+15 )) + 15) & ~15)))
#ifdef __GNUC__
#define _alloca16( x ) ( ({assert((x)<ID_MAX_ALLOCA_SIZE);}), __builtin_alloca_with_align( (x), 16*8 ) )
#define _alloca( x ) ( ({assert((x)<ID_MAX_ALLOCA_SIZE);}), __builtin_alloca( (x) ) )
#else
#define _alloca( x ) (({assert( (x)<ID_MAX_ALLOCA_SIZE );}), alloca( (x) ))
#define _alloca16( x ) (({assert( (x)<ID_MAX_ALLOCA_SIZE );}),((void *)((((uintptr_t)alloca( (x)+15 )) + 15) & ~15)))
#endif
#ifdef GAME_DLL
#define ID_GAME_API __attribute__((visibility ("default")))