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Always use cmpxchg16b on x64 for atomic_ref<16 bytes> #4751

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merged 20 commits into from
Jul 5, 2024
Merged

Always use cmpxchg16b on x64 for atomic_ref<16 bytes> #4751

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be1dabe
Simplify `__std_atomic_has_cmpxchg16b`: cmpxchg16b is always availabl…
StephanTLavavej Jun 16, 2024
b16508d
Simplify `__std_atomic_compare_exchange_128` accordingly.
StephanTLavavej Jun 16, 2024
bad4814
`__std_atomic_compare_exchange_128` and `__std_atomic_has_cmpxchg16b`…
StephanTLavavej Jun 16, 2024
7bf2aa7
Preserve `__std_atomic_compare_exchange_128` for bincompat.
StephanTLavavej Jun 16, 2024
e3a9a91
Replace the `_STD_COMPARE_EXCHANGE_128` macro with `_InterlockedCompa…
StephanTLavavej Jun 16, 2024
60798a3
Allow Clang x64 to use `_InterlockedCompareExchange128`.
StephanTLavavej Jun 16, 2024
c7261ef
Simplify the "future ABI" `atomic<T>::is_lock_free()`.
StephanTLavavej Jun 16, 2024
72349d3
Major style: Add parens when mixing arithmetic and bitwise operators …
StephanTLavavej Jun 16, 2024
6411c97
Minor style: Simplify `atomic<T>::is_lock_free()`.
StephanTLavavej Jun 16, 2024
b855bb9
Enhance the "future ABI" `_Is_always_lock_free` (aka `atomic<T>::is_a…
StephanTLavavej Jun 16, 2024
ea085c5
Centralize `atomic<T>::is_lock_free()` and `_Is_always_lock_free`.
StephanTLavavej Jun 16, 2024
c468e9e
`atomic_ref::is_lock_free()`: Simplify.
StephanTLavavej Jun 16, 2024
3861e48
`atomic_ref::is_lock_free()`: Further simplify.
StephanTLavavej Jun 16, 2024
0e17494
Enhance `atomic_ref::is_always_lock_free`.
StephanTLavavej Jun 16, 2024
fe82b0c
Collapse `atomic_ref` `is_always_lock_free` and `is_lock_free()`.
StephanTLavavej Jun 16, 2024
0c46d60
`_ATOMIC_HAS_DCAS` is now unused.
StephanTLavavej Jun 16, 2024
ba77cd1
Preserve `__std_atomic_has_cmpxchg16b` for bincompat.
StephanTLavavej Jun 16, 2024
96d86e7
Drop `_STD_ATOMIC_ALWAYS_USE_CMPXCHG16B` and simplify test coverage.
StephanTLavavej Jun 16, 2024
537bc95
`_STL_WIN32_WINNT_WINBLUE` is now unused.
StephanTLavavej Jun 25, 2024
e13d679
Silence unreferenced parameter warnings for 32-bit.
StephanTLavavej Jun 28, 2024
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_STL_WIN32_WINNT_WINBLUE is now unused.
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@StephanTLavavej
StephanTLavavej committed Jun 27, 2024
commit 537bc95e6bef94a023818f724b8bb2c38546f172
7 changes: 3 additions & 4 deletions stl/inc/yvals_core.h
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Expand Up @@ -1941,10 +1941,9 @@ compiler option, or define _ALLOW_RTCc_IN_STL to suppress this error.
#error In yvals_core.h, defined(MRTDLL) implies defined(_M_CEE_PURE); !defined(_M_CEE_PURE) implies !defined(MRTDLL)
#endif // defined(MRTDLL) && !defined(_M_CEE_PURE)

#define _STL_WIN32_WINNT_VISTA 0x0600 // _WIN32_WINNT_VISTA from sdkddkver.h
#define _STL_WIN32_WINNT_WIN8 0x0602 // _WIN32_WINNT_WIN8 from sdkddkver.h
#define _STL_WIN32_WINNT_WINBLUE 0x0603 // _WIN32_WINNT_WINBLUE from sdkddkver.h
#define _STL_WIN32_WINNT_WIN10 0x0A00 // _WIN32_WINNT_WIN10 from sdkddkver.h
#define _STL_WIN32_WINNT_VISTA 0x0600 // _WIN32_WINNT_VISTA from sdkddkver.h
#define _STL_WIN32_WINNT_WIN8 0x0602 // _WIN32_WINNT_WIN8 from sdkddkver.h
#define _STL_WIN32_WINNT_WIN10 0x0A00 // _WIN32_WINNT_WIN10 from sdkddkver.h

// Note that the STL DLL builds will set this to XP for ABI compatibility with VS2015 which supported XP.
#ifndef _STL_WIN32_WINNT
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