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prfchwintrin.h: Make _m_prefetchw take a pointer to volatile (PR49124) 

For some reason, Microsoft declares _m_prefetch to take a const void*,
but _m_prefetchw to take a /volatile/ const void*.

Do the same for compatibility.

Differential revision: https://reviews.llvm.org/D106790
This commit is contained in:
Hans Wennborg 2021-07-26 15:09:36 +02:00
parent c423a586a7
commit 12dc13b73c
1 changed files with 5 additions and 2 deletions
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7
clang/lib/Headers/prfchwintrin.h
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@ -47,9 +47,12 @@ _m_prefetch(void *__P)
/// \param __P
/// A pointer specifying the memory address to be prefetched.
static __inline__ void __attribute__((__always_inline__, __nodebug__))
_m_prefetchw(void *__P)
_m_prefetchw(volatile const void *__P)
{
__builtin_prefetch (__P, 1, 3 /* _MM_HINT_T0 */);
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wcast-qual"
__builtin_prefetch ((const void*)__P, 1, 3 /* _MM_HINT_T0 */);
#pragma clang diagnostic pop
}
#endif /* __PRFCHWINTRIN_H */