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qemu/compiler: Remove QEMU_GENERIC

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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>
This commit is contained in:
Richard Henderson 2021-06-14 16:31:42 -07:00
parent 4ffb0681d7
commit 8bae43fa1a
1 changed files with 0 additions and 40 deletions
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40
include/qemu/compiler.h
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@ -173,46 +173,6 @@
#define QEMU_ALWAYS_INLINE
#endif
/* Implement C11 _Generic via GCC builtins. Example:
*
* QEMU_GENERIC(x, (float, sinf), (long double, sinl), sin) (x)
*
* The first argument is the discriminator. The last is the default value.
* The middle ones are tuples in "(type, expansion)" format.
*/
/* First, find out the number of generic cases. */
#define QEMU_GENERIC(x, ...) \
QEMU_GENERIC_(typeof(x), __VA_ARGS__, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
/* There will be extra arguments, but they are not used. */
#define QEMU_GENERIC_(x, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, count, ...) \
QEMU_GENERIC##count(x, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)
/* Two more helper macros, this time to extract items from a parenthesized
* list.
*/
#define QEMU_FIRST_(a, b) a
#define QEMU_SECOND_(a, b) b
/* ... and a final one for the common part of the "recursion". */
#define QEMU_GENERIC_IF(x, type_then, else_) \
__builtin_choose_expr(__builtin_types_compatible_p(x, \
QEMU_FIRST_ type_then), \
QEMU_SECOND_ type_then, else_)
/* CPP poor man's "recursion". */
#define QEMU_GENERIC1(x, a0, ...) (a0)
#define QEMU_GENERIC2(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC1(x, __VA_ARGS__))
#define QEMU_GENERIC3(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC2(x, __VA_ARGS__))
#define QEMU_GENERIC4(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC3(x, __VA_ARGS__))
#define QEMU_GENERIC5(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC4(x, __VA_ARGS__))
#define QEMU_GENERIC6(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC5(x, __VA_ARGS__))
#define QEMU_GENERIC7(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC6(x, __VA_ARGS__))
#define QEMU_GENERIC8(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC7(x, __VA_ARGS__))
#define QEMU_GENERIC9(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC8(x, __VA_ARGS__))
#define QEMU_GENERIC10(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC9(x, __VA_ARGS__))
/**
* qemu_build_not_reached()
*