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meson: Remove CONFIG_ATOMIC64

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This config is no longer used.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2026-01-08 13:53:50 +11:00
parent 71adccb6f7
commit 997d86a9bb
1 changed files with 0 additions and 16 deletions
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meson.build
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@@ -2939,22 +2939,6 @@ config_host_data.set('HAVE_BROKEN_SIZE_MAX', not cc.compiles('''
return printf("%zu", SIZE_MAX);
}''', args: ['-Werror']))
# See if 64-bit atomic operations are supported.
# Note that without __atomic builtins, we can only
# assume atomic loads/stores max at pointer size.
config_host_data.set('CONFIG_ATOMIC64', cc.links('''
#include <stdint.h>
int main(void)
{
uint64_t x = 0, y = 0;
y = __atomic_load_n(&x, __ATOMIC_RELAXED);
__atomic_store_n(&x, y, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&x, &y, x, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
__atomic_exchange_n(&x, y, __ATOMIC_RELAXED);
__atomic_fetch_add(&x, y, __ATOMIC_RELAXED);
return 0;
}''', args: qemu_isa_flags))
# has_int128_type is set to false on Emscripten to avoid errors by libffi
# during runtime.
has_int128_type = host_os != 'emscripten' and cc.compiles('''