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[Backport branch/3.3.x] Add fallback for _CCCL_BUILTIN_EXPECT #8049

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[Backport branch/3.3.x] Add fallback for _CCCL_BUILTIN_EXPECT #8049

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6 changes: 4 additions & 2 deletions libcudacxx/include/cuda/std/__cccl/builtin.h
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Original file line number Diff line number Diff line change
Expand Up @@ -115,8 +115,10 @@
#endif // _CCCL_CHECK_BUILTIN(builtin_constant_p)

#if _CCCL_CHECK_BUILTIN(builtin_expect) || _CCCL_COMPILER(MSVC) || _CCCL_COMPILER(GCC)
# define _CCCL_BUILTIN_EXPECT(...) __builtin_expect(__VA_ARGS__)
#endif // _CCCL_CHECK_BUILTIN(builtin_expect)
# define _CCCL_BUILTIN_EXPECT(_EXPR, _VAL) __builtin_expect(_EXPR, _VAL)
#else // ^^^ has __builtin_expect ^^^ / vvv no __builtin_expect vvv
# define _CCCL_BUILTIN_EXPECT(_EXPR, _VAL) (_EXPR)
#endif // ^^^ no __builtin_expect ^^^

#if _CCCL_CHECK_BUILTIN(builtin_huge_valf) || _CCCL_COMPILER(MSVC) || _CCCL_COMPILER(GCC, <, 10)
# define _CCCL_BUILTIN_HUGE_VALF() __builtin_huge_valf()
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