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Diffstat (limited to 'src')
| -rw-r--r-- | src/include/port/simd.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/include/port/simd.h b/src/include/port/simd.h new file mode 100644 index 00000000000..a571e79f574 --- /dev/null +++ b/src/include/port/simd.h @@ -0,0 +1,30 @@ +/*------------------------------------------------------------------------- + * + * simd.h + * Support for platform-specific vector operations. + * + * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/port/simd.h + * + *------------------------------------------------------------------------- + */ +#ifndef SIMD_H +#define SIMD_H + +/* + * SSE2 instructions are part of the spec for the 64-bit x86 ISA. We assume + * that compilers targeting this architecture understand SSE2 intrinsics. + * + * We use emmintrin.h rather than the comprehensive header immintrin.h in + * order to exclude extensions beyond SSE2. This is because MSVC, at least, + * will allow the use of intrinsics that haven't been enabled at compile + * time. + */ +#if (defined(__x86_64__) || defined(_M_AMD64)) +#include <emmintrin.h> +#define USE_SSE2 +#endif + +#endif /* SIMD_H */ |