================
@@ -755,6 +755,12 @@ def BSwap : Builtin, Template<["unsigned short",
"uint32_t", "uint64_t"],
let Prototype = "T(T)";
}
+def BSwapg : Builtin {
+ let Spellings = ["__builtin_bswapg"];
+ let Attributes = [NoThrow, Const, Constexpr, CustomTypeChecking];
+ let Prototype = "int(...)";
----------------
clingfei wrote:
> IIRC `T(T)` assumes an explicit set of type mappings. In _principle_ I think
> this could be labeled as `T(T)` with the customtypechecking flag. That would
> be more correct than `int(..)`, and the Sema work is already doing the custom
> checking.
In fact, at first I attempted to use T(T) with an explicit set of type
mappings, but the automatically generated builtin functions are bswapg16,
bswapg32, etc., rather than a single generic bswapg. I'm not sure if I can use
T(T) without making more modifications to clang. It would be nice if that
worked.
https://github.com/llvm/llvm-project/pull/162433
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