Commit c552d6c0 authored by Richard Henderson's avatar Richard Henderson Committed by Aurelien Jarno
Browse files

tcg: Add tcg_debug_assert

Like the C assert macro, except only enabled for CONFIG_DEBUG_TCG,
and without having to set _NDEBUG and disable all other asserts at
the same time.

The use of __builtin_unreachable (when available) gives the compiler
the same information, which may (or may not) help it optimize better.

Signed-off-by: default avatarRichard Henderson <>
Signed-off-by: default avatarAurelien Jarno <>
parent 77276f65
......@@ -530,6 +530,15 @@ do {\
} while (0)
# define tcg_debug_assert(X) do { assert(X); } while (0)
#elif QEMU_GNUC_PREREQ(4, 5)
# define tcg_debug_assert(X) \
do { if (!(X)) { __builtin_unreachable(); } } while (0)
# define tcg_debug_assert(X) do { (void)(X); } while (0)
void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);
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