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[UCRT] Fix GCC/Clang build of SSE2/AVX code

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On GCC the code using extended ISA cannot be inlined and must either be marked with a function attribute or compiled with the proper target options ('-mavx2' on the command line or '#pragma GCC target("avx2")' inside the code)
This commit is contained in:
Timo Kreuzer 2024-11-10 14:57:01 +02:00
parent 51e6ce3aa7
commit 97e20ef342
2 changed files with 25 additions and 1 deletions
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20
sdk/lib/ucrt/inc/corecrt_internal_simd.h
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@ -18,6 +18,24 @@
#if defined _CRT_SIMD_SUPPORT_AVAILABLE
#if defined(__clang__)
#define _UCRT_ENABLE_EXTENDED_ISA \
_Pragma("clang attribute push(__attribute__((target(\"sse2,avx,avx2\"))), apply_to=function)")
#define _UCRT_RESTORE_DEFAULT_ISA \
_Pragma("clang attribute pop")
#elif defined(__GNUC__)
#define _UCRT_ENABLE_EXTENDED_ISA \
_Pragma("GCC push_options") \
_Pragma("GCC target(\"avx2\")")
#define _UCRT_RESTORE_DEFAULT_ISA \
_Pragma("GCC pop_options")
#else
#define _UCRT_ENABLE_EXTENDED_ISA
#define _UCRT_RESTORE_DEFAULT_ISA
#endif
_UCRT_ENABLE_EXTENDED_ISA
extern "C" int __isa_available;
enum class __crt_simd_isa
@ -155,4 +173,6 @@
}
};
_UCRT_RESTORE_DEFAULT_ISA
#endif // _CRT_SIMD_SUPPORT_AVAILABLE

6
sdk/lib/ucrt/string/strnlen.cpp
View file

@ -78,11 +78,13 @@ static __forceinline size_t __cdecl common_strnlen_c(
#ifdef _CRT_SIMD_SUPPORT_AVAILABLE
_UCRT_ENABLE_EXTENDED_ISA
template <strnlen_mode Mode, __crt_simd_isa Isa, typename Element>
_Check_return_
_When_(maximum_count > _String_length_(string), _Post_satisfies_(return == _String_length_(string)))
_When_(maximum_count <= _String_length_(string), _Post_satisfies_(return == maximum_count))
static __forceinline size_t __cdecl common_strnlen_simd(
static __inline size_t __cdecl common_strnlen_simd(
Element const* const string,
size_t const maximum_count
) throw()
@ -168,6 +170,8 @@ static __forceinline size_t __cdecl common_strnlen_c(
return static_cast<size_t>(it - string);
}
_UCRT_RESTORE_DEFAULT_ISA
#endif // _CRT_SIMD_SUPPORT_AVAILABLE
template <strnlen_mode Mode, typename Element>