qemu/compiler: Remove QEMU_GENERIC
All previous users now use C11 _Generic. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210614233143.1221879-8-richard.henderson@linaro.org>
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@ -173,46 +173,6 @@
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#define QEMU_ALWAYS_INLINE
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#endif
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/* Implement C11 _Generic via GCC builtins. Example:
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*
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* QEMU_GENERIC(x, (float, sinf), (long double, sinl), sin) (x)
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*
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* The first argument is the discriminator. The last is the default value.
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* The middle ones are tuples in "(type, expansion)" format.
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*/
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/* First, find out the number of generic cases. */
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#define QEMU_GENERIC(x, ...) \
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QEMU_GENERIC_(typeof(x), __VA_ARGS__, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
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/* There will be extra arguments, but they are not used. */
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#define QEMU_GENERIC_(x, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, count, ...) \
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QEMU_GENERIC##count(x, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)
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/* Two more helper macros, this time to extract items from a parenthesized
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* list.
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*/
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#define QEMU_FIRST_(a, b) a
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#define QEMU_SECOND_(a, b) b
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/* ... and a final one for the common part of the "recursion". */
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#define QEMU_GENERIC_IF(x, type_then, else_) \
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__builtin_choose_expr(__builtin_types_compatible_p(x, \
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QEMU_FIRST_ type_then), \
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QEMU_SECOND_ type_then, else_)
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/* CPP poor man's "recursion". */
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#define QEMU_GENERIC1(x, a0, ...) (a0)
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#define QEMU_GENERIC2(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC1(x, __VA_ARGS__))
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#define QEMU_GENERIC3(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC2(x, __VA_ARGS__))
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#define QEMU_GENERIC4(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC3(x, __VA_ARGS__))
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#define QEMU_GENERIC5(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC4(x, __VA_ARGS__))
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#define QEMU_GENERIC6(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC5(x, __VA_ARGS__))
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#define QEMU_GENERIC7(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC6(x, __VA_ARGS__))
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#define QEMU_GENERIC8(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC7(x, __VA_ARGS__))
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#define QEMU_GENERIC9(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC8(x, __VA_ARGS__))
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#define QEMU_GENERIC10(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC9(x, __VA_ARGS__))
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/**
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* qemu_build_not_reached()
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*
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