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95967c2077
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46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
--- ext/hash/xxhash/xxhash.h.orig 2023-06-06 15:54:29 UTC
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+++ ext/hash/xxhash/xxhash.h
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@@ -3078,22 +3078,32 @@ enum XXH_VECTOR_TYPE /* fake enum */ {
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* inconsistent intrinsics, spotty coverage, and multiple endiannesses.
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*/
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#if XXH_VECTOR == XXH_VSX
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+/* Annoyingly, these headers _may_ define three macros: `bool`, `vector`,
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+ * and `pixel`. This is a problem for obvious reasons.
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+ *
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+ * These keywords are unnecessary; the spec literally says they are
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+ * equivalent to `__bool`, `__vector`, and `__pixel` and may be undef'd
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+ * after including the header.
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+ *
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+ * We use pragma push_macro/pop_macro to keep the namespace clean. */
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+# pragma push_macro("bool")
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+# pragma push_macro("vector")
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+# pragma push_macro("pixel")
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+/* silence potential macro redefined warnings */
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+# undef bool
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+# undef vector
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+# undef pixel
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+
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# if defined(__s390x__)
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# include <s390intrin.h>
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# else
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-/* gcc's altivec.h can have the unwanted consequence to unconditionally
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- * #define bool, vector, and pixel keywords,
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- * with bad consequences for programs already using these keywords for other purposes.
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- * The paragraph defining these macros is skipped when __APPLE_ALTIVEC__ is defined.
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- * __APPLE_ALTIVEC__ is _generally_ defined automatically by the compiler,
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- * but it seems that, in some cases, it isn't.
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- * Force the build macro to be defined, so that keywords are not altered.
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- */
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-# if defined(__GNUC__) && !defined(__APPLE_ALTIVEC__)
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-# define __APPLE_ALTIVEC__
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-# endif
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# include <altivec.h>
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# endif
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+
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+/* Restore the original macro values, if applicable. */
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+# pragma pop_macro("pixel")
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+# pragma pop_macro("vector")
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+# pragma pop_macro("bool")
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typedef __vector unsigned long long xxh_u64x2;
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typedef __vector unsigned char xxh_u8x16;
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