================
@@ -3288,7 +3288,15 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC,
const CallExpr *Call,
case Builtin::BI__builtin_elementwise_ctzg:
return interp__builtin_elementwise_countzeroes(S, OpPC, Frame, Call,
BuiltinID);
-
+ case Builtin::BI__builtin_bswapg: {
+ const APSInt &Val = popToAPSInt(S, Call->getArg(0));
+ assert(Val.getActiveBits() <= 64);
+ if (Val.getBitWidth() == 8)
+ pushInteger(S, Val, Call->getType());
+ else
+ pushInteger(S, Val.byteSwap(), Call->getType());
+ return true;
+ }
----------------
tbaederr wrote:
Don't add the implementation in the switch. We already have
`interp__builtin_swap` which you can just use here, provided the special case
for 8 doesn't break anything.
https://github.com/llvm/llvm-project/pull/162433
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