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6.58.16 MIPS SIMD Architecture (MSA) Support

GCC provides intrinsics to access the SIMD instructions provided by the MSA MIPS SIMD Architecture. The interface is made available by including <msa.h> and using -mmsa -mhard-float -mfp64 -mnan=2008. For each __builtin_msa_*, there is a shortened name of the intrinsic, __msa_*.

MSA implements 128-bit wide vector registers, operating on 8-, 16-, 32- and 64-bit integer, 16- and 32-bit fixed-point, or 32- and 64-bit floating point data elements. The following vectors typedefs are included in msa.h:

Instructions and corresponding built-ins may have additional restrictions and/or input/output values manipulated:

{
typedef int i32;
#if __LONG_MAX__ == __LONG_LONG_MAX__
typedef long i64;
#else
typedef long long i64;
#endif

typedef unsigned int u32;
#if __LONG_MAX__ == __LONG_LONG_MAX__
typedef unsigned long u64;
#else
typedef unsigned long long u64;
#endif

typedef double f64;
typedef float f32;
}

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